/* =============================================
   TokenDev — Design System
   Professional · Bright · Corporate
   ============================================= */

/* ----- Design Tokens ----- */
:root {
  /* Surfaces */
  --color-bg: #f5f6fa;
  --color-bg-alt: #edeff4;
  --color-surface: #ffffff;
  --color-surface-hover: #f8f9fc;
  --color-border: rgba(0, 0, 0, 0.07);
  --color-border-accent: rgba(37, 99, 235, 0.12);

  /* Accents */
  --color-primary: #2563eb;
  --color-primary-dim: rgba(37, 99, 235, 0.08);
  --color-primary-glow: rgba(37, 99, 235, 0.2);
  --color-gold: #d97706;
  --color-gold-dim: rgba(217, 119, 6, 0.1);
  --color-hero-surface: #fefce8;

  /* Text */
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
  --shadow-glow-primary: 0 8px 30px rgba(37, 99, 235, 0.2);

  /* Typography */
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Sora', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 800ms;
}

/* ----- Reset ----- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }
input, textarea { font: inherit; color: inherit; }

::selection {
  background: var(--color-primary-dim);
  color: var(--color-primary);
}

/* ----- Scrollbar ----- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* =============================================
   Utility
   ============================================= */
.hide-mobile { display: inline; }
.hidden { display: none; }

.btn--admin {
  margin-left: auto;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.auth-hint {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.auth-toggle-link {
  color: var(--color-primary);
  font-weight: 600;
}

.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 0.9rem;
}

.pm-section-title {
  margin: var(--space-lg) 0 var(--space-md);
  font-size: 1rem;
}

.pm-add-btn { margin-bottom: var(--space-md); }

.pm-actions {
  display: flex;
  gap: var(--space-sm);
}

.pm-cancel { flex: 1; }
.pm-save { flex: 2; }

/* =============================================
   Typography
   ============================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* =============================================
   Reveal Animation (scroll-triggered)
   ============================================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-smooth), transform 0.7s var(--ease-smooth);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   Buttons
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--color-primary);
  color: #ffffff;
}
.btn--primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-primary);
}

.btn--ghost {
  border: 1px solid var(--color-border-accent);
  color: var(--color-text);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
}

/* =============================================
   Section Header (shared pattern)
   ============================================= */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  border: 1px solid var(--color-border-accent);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.section-desc {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

.section-footer {
  text-align: center;
  margin-top: var(--space-xl);
}

/* =============================================
   Navigation
   ============================================= */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background var(--duration-normal) var(--ease-smooth);
}

.nav-header.is-scrolled {
  background: rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-text);
}

.logo-mark {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-primary);
}

.logo-highlight { color: var(--color-primary); }

.nav-menu {
  display: flex;
  gap: var(--space-lg);
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-out-expo);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-primary);
  transition: width var(--duration-fast) var(--ease-out-expo);
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-link:hover::after {
  width: 100%;
}

/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  margin-left: var(--space-sm);
  line-height: 1.4;
}
.lang-switcher:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-dim);
}
.lang-current {
  color: var(--color-primary);
}
.lang-other {
  color: var(--color-text-muted);
}
.lang-divider {
  color: var(--color-border);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--duration-fast) var(--ease-out-expo);
  border-radius: 1px;
}

/* =============================================
   Hero
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 var(--space-lg);
  background: linear-gradient(135deg, #f0f4ff 0%, var(--color-bg) 40%, var(--color-hero-surface) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at center, black 30%, transparent 70%);
  mask-image: radial-gradient(ellipse 60% 50% at center, black 30%, transparent 70%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  animation: orbFloat 20s ease-in-out infinite alternate;
  pointer-events: none;
}

.hero-orb--blue {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
  top: -10%;
  right: -10%;
  animation-delay: 0s;
}

.hero-orb--gold {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(217, 119, 6, 0.08) 0%, transparent 70%);
  bottom: -10%;
  left: -10%;
  animation-delay: -5s;
}

@keyframes orbFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.1); }
  100% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  border: 1px solid var(--color-border-accent);
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.1s both;
  position: relative;
  z-index: 1;
}

.hero-badge-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-lg);
}

.hero-badge-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  min-width: 600px;
  min-height: 200px;
  pointer-events: none;
  opacity: 0.6;
  color: var(--color-primary);
  z-index: 0;
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.1s both;
}

.hero-badge-bg svg {
  width: 100%;
  height: 100%;
}

.hero-title {
  margin-bottom: var(--space-lg);
}

.hero-title-line {
  display: block;
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--color-text);
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.2s both;
}

.hero-title-line--accent {
  background: linear-gradient(135deg, var(--color-primary), #3b82f6, var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.35s both;
}

.hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.5s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.65s both;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  animation: fadeInUp 0.8s var(--ease-out-expo) 1s both;
}

.scroll-arrow {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { transform: scaleY(0.5); opacity: 0.3; }
  50% { transform: scaleY(1); opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =============================================
   Services
   ============================================= */
.services {
  position: relative;
  padding: var(--space-2xl) var(--space-lg);
  max-width: 100%;
  margin: 0 auto;
  /* 桥接 Hero 的暖色底部与 Projects 的冷灰背景，形成平滑色温过渡 */
  background: linear-gradient(
    180deg,
    var(--color-hero-surface) 0%,
    var(--color-bg) 18%,
    var(--color-bg-alt) 100%
  );
}

.services::before,
.services::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 200px;
  pointer-events: none;
  z-index: 0;
}

.services::before {
  top: 0;
  background: linear-gradient(180deg, var(--color-hero-surface) 0%, transparent 100%);
}

.services::after {
  bottom: 0;
  background: linear-gradient(0deg, var(--color-bg-alt) 0%, transparent 100%);
}

.services > * {
  position: relative;
  z-index: 1;
}

.services-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  max-width: 1000px;
  margin: 0 auto;
}

/* Service themes */
.service-feature {
  --service-accent: var(--color-primary);
  --service-accent-dim: var(--color-primary-dim);
  --service-accent-glow: var(--color-primary-glow);

  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: var(--space-xl);
  transition: all var(--duration-normal) var(--ease-out-expo);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.service-feature--ai {
  --service-accent: #2563eb;
  --service-accent-dim: rgba(37, 99, 235, 0.1);
  --service-accent-glow: rgba(37, 99, 235, 0.22);
}

.service-feature--cloud {
  --service-accent: #06b6d4;
  --service-accent-dim: rgba(6, 182, 212, 0.1);
  --service-accent-glow: rgba(6, 182, 212, 0.2);
}

.service-feature--aiot {
  --service-accent: #d97706;
  --service-accent-dim: rgba(217, 119, 6, 0.12);
  --service-accent-glow: rgba(217, 119, 6, 0.2);
}

.service-feature::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 24px;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-smooth);
  background: linear-gradient(135deg, var(--service-accent-dim) 0%, transparent 55%, var(--color-gold-dim) 100%);
}

.service-feature:hover::before {
  opacity: 1;
}

.service-feature:hover {
  border-color: var(--service-accent-glow);
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.08), 0 0 0 1px var(--service-accent-glow);
}

.service-feature-glow {
  position: absolute;
  top: -40%;
  right: -25%;
  width: 55%;
  height: 100%;
  background: radial-gradient(circle, var(--service-accent-dim) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-smooth);
  pointer-events: none;
}

.service-feature:hover .service-feature-glow {
  opacity: 1;
}

.service-feature-head {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-lg);
  align-items: start;
  margin-bottom: var(--space-xl);
}

.service-feature-icon {
  width: 68px;
  height: 68px;
  flex-shrink: 0;
  color: var(--service-accent);
  background: linear-gradient(135deg, var(--service-accent-dim) 0%, rgba(255,255,255,0.6) 100%);
  border: 1px solid var(--service-accent-glow);
  border-radius: 18px;
  padding: 14px;
  box-shadow: 0 8px 24px var(--service-accent-dim);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.service-feature:hover .service-feature-icon {
  transform: scale(1.05) rotate(-2deg);
  box-shadow: 0 12px 32px var(--service-accent-glow);
}

.service-feature-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.service-feature-desc {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 760px;
}

.service-capabilities {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.service-capability {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: linear-gradient(180deg, var(--color-surface-hover) 0%, var(--color-bg) 100%);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--service-accent);
  border-radius: 12px;
  transition: all var(--duration-fast) var(--ease-out-expo);
  overflow: hidden;
}

.service-feature:hover .service-capability {
  border-color: var(--service-accent-glow);
  border-left-color: var(--service-accent);
}

.service-capability:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  background: var(--color-surface);
}

.service-capability-main {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.service-capability-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
}

.service-capability-value {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.service-capability-features {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-end;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.25rem;
}

/* Empty (e.g. missing translation) — don't reserve layout space. */
.service-capability-features:empty {
  display: none;
}

/* Technology chips: each term is an atomic, non-wrapping unit, which
   removes the old `///`-vs-newline inconsistency caused by flex-wrap
   splitting a single text node. Tints follow each card's accent color. */
.cap-chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
  padding: 0.1rem 0.5rem;
  background: var(--service-accent-dim);
  border: 1px solid var(--service-accent-glow);
  border-radius: 6px;
  white-space: nowrap;
  transition: color var(--duration-fast) var(--ease-out-expo),
              background var(--duration-fast) var(--ease-out-expo);
}

.cap-chip::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--service-accent);
  margin-right: 0.35rem;
  flex-shrink: 0;
}

.service-capability:hover .cap-chip {
  color: var(--service-accent);
  background: var(--color-surface-hover);
}

/* Tablet & below */
@media (max-width: 900px) {
  .service-feature-head {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .service-feature-icon {
    width: 56px;
    height: 56px;
    padding: 12px;
  }

  .service-capabilities {
    grid-template-columns: 1fr;
  }

  .service-feature {
    padding: var(--space-lg);
  }
}

/* =============================================
   Project Tabs
   ============================================= */
.project-tabs {
  display: flex;
  gap: 0;
  justify-content: center;
  margin-bottom: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 4px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: var(--shadow-sm);
}

.project-tab {
  flex: 1;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  color: var(--color-text-secondary);
  background: transparent;
  transition: all var(--duration-fast) var(--ease-out-expo);
  border: none;
  cursor: pointer;
}

.project-tab:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

.project-tab.is-active {
  background: var(--color-primary);
  color: #ffffff;
}

.tab-content {
  display: none;
  animation: tabFadeIn 0.4s var(--ease-smooth);
}

.tab-content.is-active {
  display: block;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Tab: documents grid inside projects tab */
#tab-documents .documents-grid,
#tab-demos .demos-featured,
#tab-demos .demos-grid {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

#tab-demos .demos-featured {
  margin-bottom: var(--space-xl);
}

/* =============================================
   Projects
   ============================================= */
.projects {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-alt);
}

.projects > .section-header {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.project-filters {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.filter-btn {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.filter-btn:hover {
  border-color: var(--color-border-accent);
  color: var(--color-text);
}

.filter-btn.is-active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.project-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out-expo);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-lg);
}

.project-card-thumb {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.project-card-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: var(--color-bg);
}

/* ============================================
   Project Card Image Carousel
   ============================================ */
.project-card-carousel {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.project-card-carousel .project-card-thumb-img {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.project-card-carousel .project-card-thumb-img.is-active {
  opacity: 1;
}

.project-card-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  border: none;
  font-size: 1.3rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s ease, background-color 0.15s ease;
  z-index: 2;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.project-card:hover .project-card-nav {
  opacity: 1;
}

.project-card-nav:hover {
  background: rgba(0, 0, 0, 0.75);
}

.project-card-nav.prev {
  left: 8px;
}

.project-card-nav.next {
  right: 8px;
}

.project-card-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  z-index: 2;
  padding: 4px 8px;
  border-radius: 100px;
  background: rgba(0, 0, 0, 0.3);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.project-card:hover .project-card-dots {
  opacity: 1;
}

.project-card-dots .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transition: background-color 0.2s ease;
}

.project-card-dots .dot.is-active {
  background: #fff;
}

/* Project image grid */
.pm-image-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 8px;
}
.pm-image-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color 0.2s;
}
.pm-image-item:hover {
  border-color: var(--color-border);
}
.pm-image-item.is-thumb {
  border-color: var(--color-primary);
}
.pm-image-item.is-thumb:hover {
  border-color: var(--color-primary);
}
.pm-image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.pm-file-input-hidden {
  display: none;
}

/* ----- Form Group ----- */
.pm-form-group {
  margin-bottom: var(--space-lg);
}
.pm-form-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  padding-left: 0;
}
.pm-form-group-title::before {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--color-primary);
  border-radius: 1px;
  flex-shrink: 0;
}
.pm-form-group-content {
  padding-left: 12px;
}

/* ----- Color Picker ----- */
.pm-color-picker {
  width: 100%;
}
.pm-color-row {
  display: flex;
  gap: 12px;
  margin-bottom: 10px;
}
.pm-color-field {
  flex: 1;
  min-width: 0;
}
.pm-color-field-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}
.pm-color-swatch {
  width: 36px;
  height: 36px;
  padding: 0;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  background: none;
  -webkit-appearance: none;
  appearance: none;
}
.pm-color-swatch::-webkit-color-swatch-wrapper {
  padding: 2px;
}
.pm-color-swatch::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}
.pm-color-swatch::-moz-color-swatch {
  border: none;
  border-radius: 4px;
}
.pm-color-angle-select {
  width: 100%;
  padding: 6px 8px;
  margin-top: 0;
}
.pm-color-preview {
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  transition: background 0.2s;
}

/* ----- Rich Text Editor ----- */
.pm-rich-editor {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.pm-rich-editor:focus-within {
  border-color: var(--color-border-accent);
}
.pm-rich-toolbar {
  display: flex;
  gap: 2px;
  padding: 4px 6px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.pm-rich-btn {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: background 0.15s, color 0.15s;
}
.pm-rich-btn:hover {
  background: var(--color-primary-dim);
  color: var(--color-primary);
}
.pm-rich-sep {
  width: 1px;
  height: 18px;
  background: var(--color-border);
  margin: 0 2px;
  align-self: center;
}
.pm-rich-content {
  min-height: 60px;
  max-height: 200px;
  overflow-y: auto;
  padding: 8px 12px;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text);
  outline: none;
  background: var(--color-surface);
}
.pm-rich-content:empty::before {
  content: attr(placeholder);
  color: var(--color-text-muted);
  pointer-events: none;
}
.pm-rich-content ul,
.pm-rich-content ol {
  margin: 4px 0;
  padding-left: 24px;
  list-style-position: outside;
}
.pm-rich-content ul {
  list-style-type: disc;
}
.pm-rich-content ol {
  list-style-type: decimal;
}
.pm-rich-content li {
  margin: 2px 0;
}
.pm-rich-content a {
  color: var(--color-primary);
}

/* ----- Image Drop Zone ----- */
.pm-image-drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s;
  position: relative;
}
.pm-image-drop-zone:hover,
.pm-image-drop-zone.pm-drop-zone--active {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
}
.pm-drop-zone-icon {
  width: 40px;
  height: 40px;
  color: var(--color-text-muted);
  margin: 0 auto 8px;
  display: block;
}
.pm-image-drop-zone:hover .pm-drop-zone-icon,
.pm-image-drop-zone.pm-drop-zone--active .pm-drop-zone-icon {
  color: var(--color-primary);
}
.pm-drop-zone-text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}
.pm-drop-zone-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ----- Image Overlay & Enhanced Items ----- */
.pm-image-item .pm-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.45) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}
.pm-image-item:hover .pm-image-overlay {
  opacity: 1;
}
.pm-image-item .pm-img-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 13px;
  line-height: 22px;
  text-align: center;
  padding: 0;
  opacity: 0;
  transition: opacity 0.2s, background-color 0.15s;
}
.pm-image-item:hover .pm-img-remove {
  opacity: 1;
}
.pm-image-item .pm-img-remove:hover {
  background: #dc2626;
}
.pm-image-item .pm-img-thumb-btn {
  position: absolute;
  bottom: 4px;
  left: 4px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  background: rgba(0,0,0,0.5);
  color: rgba(255,255,255,0.7);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  opacity: 0;
  transition: opacity 0.2s, background-color 0.15s;
}
.pm-image-item:hover .pm-img-thumb-btn {
  opacity: 1;
}
.pm-image-item .pm-img-thumb-btn:hover {
  background: rgba(0,0,0,0.7);
  color: #fff;
}
.pm-image-item .pm-img-thumb-btn.is-active {
  opacity: 1;
  background: var(--color-primary);
  color: #fff;
}

.project-card-thumb-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-slow) var(--ease-smooth);
}

.project-card:hover .project-card-thumb-bg {
  transform: scale(1.05);
}

.project-card-thumb svg {
  width: 48px;
  height: 48px;
  opacity: 0.25;
}

.project-card-category {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
}

.project-card-body {
  padding: var(--space-lg);
}

.project-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: var(--space-xs);
}

.project-card-body p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-clamp: 2;
  overflow: hidden;
}

.project-card-tags {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

.project-card-tags span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* Filter animation */
.project-card.hidden {
  display: none;
}

/* =============================================
   Documents
   ============================================= */
.documents {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-md);
}

.doc-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-out-expo);
  box-shadow: var(--shadow-sm);
}

.doc-card:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.doc-card-icon {
  width: 40px;
  height: 40px;
  color: var(--color-gold);
  margin-bottom: var(--space-md);
}

.doc-card-title {
  font-size: 1.05rem;
  margin-bottom: var(--space-xs);
}

.doc-card-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.doc-card-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.doc-card-link {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gold);
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.doc-card-link:hover {
  color: #b45309;
}

/* =============================================
   Demo Videos
   ============================================= */
.demos {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-alt);
}

.demos > .section-header {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.demos-featured {
  max-width: var(--max-width);
  margin: 0 auto var(--space-xl);
}

.demo-video {
  border-radius: 20px;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.demo-video-thumb {
  position: relative;
  height: 400px;
  overflow: hidden;
}

.demo-video-bg {
  width: 100%;
  height: 100%;
  position: relative;
}

.demo-video-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

.demo-video-play,
.demo-card-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-normal) var(--ease-out-expo);
  box-shadow: 0 0 40px rgba(37, 99, 235, 0.3);
}

.demo-video-play svg,
.demo-card-play svg {
  width: 28px;
  height: 28px;
  margin-left: 3px;
}

.demo-video-play:hover,
.demo-card-play:hover {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 0 60px rgba(37, 99, 235, 0.4);
}

.demo-video-label {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-border-accent);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.demo-video-info {
  padding: var(--space-lg);
}

.demo-video-info h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.demo-video-info p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.demos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.demo-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out-expo);
  box-shadow: var(--shadow-sm);
}

.demo-card:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.demo-card-thumb {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.demo-card-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.demo-card-icon-wrap {
  width: 40px;
  height: 40px;
  opacity: 0.25;
}

.demo-card-play {
  width: 48px;
  height: 48px;
}

.demo-card-play svg {
  width: 20px;
  height: 20px;
}

.demo-card-body {
  padding: var(--space-md);
}

.demo-card-body h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.demo-card-body p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* =============================================
   Contact
   ============================================= */
.contact {
  position: relative;
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

.contact-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, var(--color-primary-dim) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 50%, var(--color-gold-dim) 0%, transparent 50%);
  opacity: 0.5;
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.contact-item-icon svg {
  width: 20px;
  height: 20px;
}

.contact-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-item a,
.contact-item span {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.contact-item a:hover {
  color: var(--color-primary);
}

/* Form */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: all var(--duration-fast) var(--ease-out-expo);
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* =============================================
   Footer
   ============================================= */
.footer {
  border-top: 1px solid var(--color-border);
  background: #1e293b;
  color: #e2e8f0;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand {
  color: #f1f5f9;
}

.footer-brand .logo-mark {
  color: #60a5fa;
}

.footer-brand .logo-highlight {
  color: #60a5fa;
}

.footer-brand .logo-text {
  color: #f1f5f9;
}

.footer-brand p {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: var(--space-sm);
}

.footer-brand .company-cn-name {
  font-size: 0.8rem;
  color: #64748b;
  margin-top: var(--space-xs);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.footer-links-col h4 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #64748b;
  margin-bottom: var(--space-md);
}

.footer-links-col a {
  display: block;
  font-size: 0.9rem;
  color: #94a3b8;
  padding: 0.25rem 0;
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.footer-links-col a:hover {
  color: #60a5fa;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #64748b;
}

/* =============================================
   Responsive
   ============================================= */

/* =============================================
   Login Modal
   ============================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.5);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-smooth);
}

.modal-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-surface);
  border-radius: 20px;
  padding: var(--space-xl);
  width: 100%;
  max-width: 420px;
  margin: var(--space-lg);
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.modal-overlay.is-open .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.modal-close:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.modal-close svg {
  width: 18px;
  height: 18px;
}

.modal-header {
  margin-bottom: var(--space-lg);
}

.modal-header h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}

.modal-header p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* Project management modal: fixed header/footer + scrollable body */
.modal--project-form {
  display: flex;
  flex-direction: column;
  padding: 0;
  max-height: calc(100vh - var(--space-lg) * 2);
  overflow: hidden;
}

.modal--project-form .modal-header {
  flex-shrink: 0;
  padding: var(--space-xl) var(--space-xl) var(--space-lg);
  margin: 0;
  border-bottom: 1px solid var(--color-border);
}

.modal--project-form .modal-form {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}

.modal--project-form .modal-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: var(--space-lg) var(--space-xl) calc(var(--space-xl) + 140px);
  scroll-behavior: smooth;
  overscroll-behavior: contain;
}

.modal--project-form .modal-body::-webkit-scrollbar {
  width: 8px;
}

.modal--project-form .modal-body::-webkit-scrollbar-track {
  background: transparent;
}

.modal--project-form .modal-body::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.modal--project-form .modal-body::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

.modal--project-form .modal-footer {
  flex-shrink: 0;
  display: flex;
  gap: 12px;
  padding: var(--space-md) var(--space-xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.modal--project-form .modal-footer .pm-cancel {
  flex: 1;
}

.modal--project-form .modal-footer .pm-save {
  flex: 2;
}

@media (max-width: 640px) {
  .modal--project-form {
    max-height: 100dvh;
    margin: 0;
    border-radius: 0;
  }

  .modal--project-form .modal-header {
    padding: var(--space-lg) var(--space-lg) var(--space-md);
  }

  .modal--project-form .modal-body,
  .modal--project-form .modal-footer {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }

  .modal--project-form .modal-footer {
    padding-bottom: calc(var(--space-md) + env(safe-area-inset-bottom));
  }
}

.form-error {
  font-size: 0.85rem;
  color: #dc2626;
  margin-bottom: var(--space-md);
  min-height: 1.2em;
}

/* ============================================
   File Preview Modal (non-super users, PDF only)
   Sits above the project detail modal (z-index 2100 > 2000).
   Body uses overflow:hidden + fixed iframe height to show only the
   first few pages; a gradient fade + sticky CTA bar guide users to
   contact us for the full content.
   ============================================ */
#filePreviewModal {
  z-index: 2100;
}

.modal--preview {
  display: flex;
  flex-direction: column;
  padding: 0;
  max-width: 900px;
  max-height: 90vh;
  width: 100%;
  overflow: hidden;
}

.modal--preview .modal-header {
  flex-shrink: 0;
  padding: var(--space-lg) var(--space-xl) var(--space-md);
  margin: 0;
  border-bottom: 1px solid var(--color-border);
}

.modal--preview .modal-header h3 {
  font-size: 1.2rem;
  margin: 0;
  padding-right: var(--space-xl);
  word-break: break-word;
}

/* When the preview modal is open, lock the background page so wheel events
   over the dimmed overlay area can't scroll the page behind it. */
body.preview-open {
  overflow: hidden;
}

.file-preview-body {
  flex: 1 1 auto;
  min-height: 0;
  /* Scrollable so users can pan through the rendered preview pages. Combined
     with overscroll-behavior: contain this also stops wheel events from
     chaining to the background page when the scroll boundary is reached. */
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  position: relative;
  background: var(--color-bg);
  scroll-behavior: smooth;
}

.file-preview-body::-webkit-scrollbar {
  width: 8px;
}
.file-preview-body::-webkit-scrollbar-track {
  background: transparent;
}
.file-preview-body::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}
.file-preview-body::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

.file-preview-body iframe {
  width: 100%;
  height: 60vh;
  border: 0;
  display: block;
}

/* PDF.js canvas rendering: each page is a <canvas> element */
.pdf-preview-canvas {
  display: block;
  margin: 0 auto 12px;
  background: #fff;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
  max-width: 100%;
  height: auto;
}

.pdf-preview-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 40vh;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  padding: var(--space-xl);
}

/* Sticky bottom overlay: stays pinned to the bottom edge of the scroll
   viewport while the user pans through the rendered pages, then settles
   over the last page when the end is reached. margin-top: -80px pulls it
   up so it overlays the preceding canvas instead of occupying extra space. */
.file-preview-fade {
  position: sticky;
  bottom: 0;
  height: 80px;
  margin-top: -80px;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(13, 17, 23, 0) 0%,
    var(--color-surface) 100%
  );
}

.file-preview-cta {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.file-preview-cta span {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.file-preview-cta .btn {
  flex-shrink: 0;
}

/* Preview button on each doc item (non-super user, PDF only) */
.project-preview-btn {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.8rem;
  color: var(--color-primary);
  cursor: pointer;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}

.project-preview-btn:hover {
  opacity: 0.7;
  text-decoration: underline;
}

@media (max-width: 640px) {
  .modal--preview {
    max-height: 100dvh;
    margin: 0;
    border-radius: 0;
  }

  .file-preview-body iframe {
    height: 55vh;
  }

  .file-preview-cta {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
}

/* ============================================
   Admin Page
   ============================================ */
.admin-page {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  min-height: 100vh;
  background: var(--color-bg);
}

/* Admin page navbar: always solid background (no hero section) */
.nav-header--solid {
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--color-border);
}

.admin-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.admin-header h1 {
  font-size: 1.75rem;
}

.admin-header-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  gap: var(--space-sm);
}

.admin-header-buttons {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

.admin-table-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th {
  text-align: left;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.admin-table td {
  padding: var(--space-md);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.admin-table tr:hover td {
  background: var(--color-surface-hover);
}

.admin-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-weight: 600;
}

.admin-badge--super {
  background: var(--color-gold-dim);
  color: var(--color-gold);
}

.admin-badge--user {
  background: var(--color-primary-dim);
  color: var(--color-primary);
}

.admin-badge--active {
  background: #dcfce7;
  color: #16a34a;
}

.admin-badge--inactive {
  background: #fef2f2;
  color: #dc2626;
}

.admin-actions {
  display: flex;
  gap: var(--space-xs);
}

.admin-actions button {
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.admin-actions button:hover {
  border-color: var(--color-border-accent);
  color: var(--color-text);
}

.admin-actions .btn-danger {
  color: #dc2626;
  border-color: rgba(220, 38, 38, 0.2);
}

.admin-actions .btn-danger:hover {
  background: #fef2f2;
  border-color: #dc2626;
}

/* ============================================
   Project Detail Modal
   ============================================ */
.modal--wide {
  max-width: 720px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

/* Fixed header area for project detail modal */
.modal-detail-header {
  flex-shrink: 0;
  padding: var(--space-xl) var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

/* Scrollable body area for project detail modal */
.modal-detail-body {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
  padding: var(--space-lg) var(--space-xl) var(--space-xl);
  scroll-behavior: smooth;
  overscroll-behavior: contain;
}
.modal-detail-body::-webkit-scrollbar {
  width: 8px;
}
.modal-detail-body::-webkit-scrollbar-track {
  background: transparent;
}
.modal-detail-body::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}
.modal-detail-body::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

.project-detail-tabs {
  display: flex;
  gap: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 3px;
  margin-bottom: 0;
}

.project-detail-tab {
  flex: 1;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 7px;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.project-detail-tab:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.project-detail-tab.is-active {
  background: var(--color-primary);
  color: #fff;
}

.project-detail-content {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  min-height: 100px;
}
.project-detail-content ul,
.project-detail-content ol {
  margin: 8px 0;
  padding-left: 24px;
  list-style-position: outside;
}
.project-detail-content ul {
  list-style-type: disc;
}
.project-detail-content ol {
  list-style-type: decimal;
}
.project-detail-content li {
  margin: 4px 0;
}
.project-detail-content blockquote {
  margin: 8px 0;
  padding: 8px 16px;
  border-left: 3px solid var(--color-primary);
  background: var(--color-bg);
  border-radius: 0 6px 6px 0;
  color: var(--color-text-secondary);
}

.project-detail-content h4 {
  font-size: 1rem;
  color: var(--color-text);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}
.project-detail-content h4:first-child {
  margin-top: 0;
}

.project-doc-item,
.project-demo-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: var(--space-sm);
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.project-doc-item:hover,
.project-demo-item:hover {
  border-color: var(--color-border-accent);
  background: var(--color-bg);
}

.project-doc-icon,
.project-demo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--color-primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.project-demo-icon {
  background: var(--color-gold-dim);
  color: var(--color-gold);
}

.project-doc-icon svg,
.project-demo-icon svg {
  width: 18px;
  height: 18px;
}

.project-doc-info h5,
.project-demo-info h5 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.15rem;
}

.project-doc-info span,
.project-demo-info span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-text-muted);
}

.project-doc-info p,
.project-demo-info p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

.project-detail-tags {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin: var(--space-sm) 0 var(--space-md);
}

.project-detail-tags span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.project-card-actions {
  display: flex;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.project-card-actions button {
  flex: 1;
  padding: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.project-card-actions button:hover {
  border-color: var(--color-border-accent);
  color: var(--color-primary);
  background: var(--color-primary-dim);
}

.project-card-actions .btn-demo {
  border-color: var(--color-gold-dim);
}

.project-card-actions .btn-demo:hover {
  color: var(--color-gold);
  background: var(--color-gold-dim);
  border-color: var(--color-gold-dim);
}

/* ============================================
   Project Management Form
   ============================================ */
.pm-file-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  position: relative;
}

.pm-file-item input[type="text"] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.85rem;
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.pm-file-item input[type="text"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

.pm-file-upload-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.pm-file-input {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.pm-file-name {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.pm-file-remove {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  font-size: 0.7rem;
  color: #dc2626;
  background: none;
  border: 1px solid rgba(220, 38, 38, 0.2);
  border-radius: 6px;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.pm-file-remove:hover {
  background: #fef2f2;
  border-color: #dc2626;
}

/* ----- Project Modal: Header Accent ----- */
.pm-header-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pm-header-accent {
  display: inline-block;
  width: 4px;
  height: 1.4em;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.pm-header-title-row h2 {
  font-weight: 700;
}

/* Project card delete button */
.project-card-delete {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(220, 38, 38, 0.9);
  color: #fff;
  font-size: 1.1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  z-index: 2;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-out-expo);
}

.project-card:hover .project-card-delete {
  opacity: 1;
}

.project-card-delete:hover {
  background: #dc2626;
  transform: scale(1.1);
}

/* Edit project button */
.btn-edit-project {
  border-color: var(--color-primary-dim) !important;
  color: var(--color-primary) !important;
}

.btn-edit-project:hover {
  background: var(--color-primary-dim) !important;
  border-color: var(--color-primary) !important;
}

/* ============================================
   Drag & Drop Reorder
   ============================================ */
.project-card.is-dragging {
  opacity: 0.35;
  transform: scale(0.95);
}

.project-card.drag-over {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 12px;
}

.project-card[draggable="true"] {
  cursor: grab;
}

.project-card[draggable="true"]:active {
  cursor: grabbing;
}

.projects-grid.no-animate .project-card {
  animation: none !important;
  opacity: 1 !important;
  transform: none !important;
}

/* ============================================
   Admin Tabs
   ============================================ */
.admin-tabs {
  display: flex;
  gap: 0;
  margin-bottom: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 4px;
  max-width: 400px;
  box-shadow: var(--shadow-sm);
}

.admin-tab {
  flex: 1;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  background: transparent;
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.admin-tab:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

.admin-tab.is-active {
  background: var(--color-primary);
  color: #ffffff;
}

.admin-desc {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.admin-section-title {
  font-size: 1.25rem;
}

.admin-section.is-hidden {
  display: none;
}

.admin-loading-cell {
  text-align: center;
  padding: 3rem;
  color: var(--color-text-muted);
}

.admin-error-cell {
  text-align: center;
  padding: 3rem;
  color: #dc2626;
}

.admin-username {
  color: var(--color-text);
}

.admin-timestamp {
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.form-hint {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.modal-section-title {
  margin: var(--space-lg) 0 var(--space-md);
  font-size: 1rem;
}

.form-actions {
  display: flex;
  gap: var(--space-sm);
}

.form-actions .btn--ghost {
  flex: 1;
}

.form-actions .btn--primary {
  flex: 2;
}

.modal-action-btn {
  margin-bottom: var(--space-md);
}

/* Project filters with add button */
.project-filters .btn--primary {
  margin-left: auto;
}

/* Tablet & below */
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .demos-grid {
    grid-template-columns: 1fr;
  }

  .demo-video-thumb {
    height: 280px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile */
@media (max-width: 640px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 2.5rem;
    --space-2xl: 5rem;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--duration-normal) var(--ease-smooth);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-title-line {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .documents-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .demo-video-thumb {
    height: 200px;
  }

  .hide-mobile {
    display: none;
  }
}

/* ============================================
   Project Detail Gallery (overview tab)
   ============================================ */
.project-detail-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.project-detail-gallery-item {
  aspect-ratio: 1;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.project-detail-gallery-item:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.project-detail-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Image lightbox */
.pm-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.85);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  cursor: zoom-out;
  /* Prevent the page from being scrolled/zoomed while the lightbox is open. */
  overscroll-behavior: contain;
}
.pm-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}
/* Stage wraps the img so we can transform (scale + translate) it without
   fighting the flexbox layout on .pm-lightbox. transform-origin center keeps
   the zoom anchored to the middle of the viewport. */
.pm-lightbox-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  transform-origin: center center;
  transition: transform 0.12s ease-out;
  touch-action: none; /* let pointer events drive panning, not native scroll */
  user-select: none;
  /* Make the stage as large as the viewport so there's room to pan zoomed-in. */
  max-width: 100vw;
  max-height: 100vh;
}
.pm-lightbox.is-open .pm-lightbox-stage {
  cursor: zoom-in;
}
.pm-lightbox.is-open .pm-lightbox-stage[data-zoomed='true'] {
  cursor: grab;
}
.pm-lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  /* Disable native drag so pointer-based panning works cleanly. */
  -webkit-user-drag: none;
  pointer-events: none;
}
.pm-lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 2;
}
.pm-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Zoom toolbar: zoom out / label / zoom in / reset, centred at the bottom. */
.pm-lightbox-toolbar {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  background: rgba(15, 23, 42, 0.72);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  z-index: 2;
}
.pm-lightbox-tool {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.pm-lightbox-tool:hover {
  background: rgba(255, 255, 255, 0.18);
}
.pm-lightbox-zoom-label {
  min-width: 48px;
  text-align: center;
  color: #e2e8f0;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  user-select: none;
}

/* Prev/next navigation buttons. Hidden when only one image is shown
   (controlled by JS via style.display). */
.pm-lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s;
  user-select: none;
}
.pm-lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.08);
}
.pm-lightbox-nav.prev { left: 16px; }
.pm-lightbox-nav.next { right: 16px; }
@media (max-width: 640px) {
  .pm-lightbox-nav {
    width: 36px;
    height: 36px;
    font-size: 1.6rem;
  }
  .pm-lightbox-nav.prev { left: 8px; }
  .pm-lightbox-nav.next { right: 8px; }
}

/* Draft recovery banner inside project modal */
.pm-draft-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding: 10px 14px;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0.04));
  border-left: 3px solid #2563eb;
  border-radius: 6px;
  font-size: 14px;
  color: var(--color-text, #1f2937);
  flex-wrap: wrap;
}

.pm-draft-banner-icon {
  font-size: 18px;
  line-height: 1;
  color: #2563eb;
}

.pm-draft-banner-text {
  flex: 1;
  min-width: 0;
}

.pm-draft-banner-action,
.pm-draft-banner-discard {
  background: transparent;
  border: 1px solid #2563eb;
  color: #2563eb;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pm-draft-banner-action:hover,
.pm-draft-banner-discard:hover {
  background: #2563eb;
  color: #fff;
}

.pm-draft-banner-discard {
  border-color: #6b7280;
  color: #6b7280;
}

.pm-draft-banner-discard:hover {
  background: #6b7280;
  color: #fff;
}

@media (max-width: 640px) {
  .pm-draft-banner {
    font-size: 13px;
    padding: 8px 10px;
  }
  .pm-draft-banner-action,
  .pm-draft-banner-discard {
    padding: 3px 8px;
    font-size: 12px;
  }
}

/* Toast notification */
.pm-toast {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 10001;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff;
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}
.pm-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.pm-toast--success {
  background: #16a34a;
}
.pm-toast--error {
  background: #dc2626;
}
.pm-toast--info {
  background: #2563eb;
}
.pm-toast--warning {
  background: #d97706;
}

/* ============================================
   Site Settings form (admin)
   ============================================ */
.admin-settings-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.admin-settings-form .form-field {
  margin-bottom: var(--space-lg);
}

.admin-settings-form .form-label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.admin-settings-form .form-radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.admin-settings-form .form-radio {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.admin-settings-form .form-radio:hover {
  border-color: #2563eb;
  background: var(--color-surface-hover);
}

.admin-settings-form .form-radio input[type="radio"] {
  accent-color: #2563eb;
  width: 16px;
  height: 16px;
  cursor: pointer;
  margin: 0;
}

.admin-settings-form .form-radio span {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.admin-settings-form .form-radio input:checked + span {
  color: #0a0a10;
  font-weight: 500;
}

.admin-settings-form .form-hint {
  margin-top: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.admin-settings-form .form-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.admin-settings-form .form-error {
  margin-bottom: 0;
}