/* ============================================================
   KidArt Gallery — Design System v2
   Minimalist · Dark/Light · WCAG AA · Performance-first
   ============================================================ */

/* ---------- Theme Tokens ---------- */
:root,
[data-theme="dark"] {
  --bg:             #09090B;
  --bg-secondary:   #111114;
  --surface:        #18181B;
  --elevated:       #27272A;
  --border:         rgba(255, 255, 255, 0.08);
  --border-strong:  rgba(255, 255, 255, 0.15);

  --text:           #FAFAFA;
  --text-secondary: #A1A1AA;
  --text-muted:     #52525B;

  --primary:        #8B5CF6;
  --primary-light:  #A78BFA;
  --primary-glow:   rgba(139, 92, 246, 0.25);
  --secondary:      #EC4899;
  --secondary-glow: rgba(236, 72, 153, 0.20);
  --accent:         #06B6D4;
  --warm:           #F59E0B;
  --success:        #10B981;
  --danger:         #EF4444;

  --gradient-hero:  linear-gradient(135deg, #8B5CF6 0%, #EC4899 50%, #F59E0B 100%);
  --gradient-btn:   linear-gradient(135deg, #8B5CF6, #7C3AED);
  --gradient-card:  linear-gradient(145deg, rgba(139,92,246,0.08), rgba(236,72,153,0.05));

  --glass:          rgba(255, 255, 255, 0.03);
  --glass-border:   rgba(255, 255, 255, 0.06);
  --glass-hover:    rgba(255, 255, 255, 0.08);

  --shadow-sm:      0 1px 3px rgba(0,0,0,0.5);
  --shadow-md:      0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:      0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow:    0 0 40px var(--primary-glow);

  --nav-bg:         rgba(9, 9, 11, 0.85);
  --overlay:        rgba(9, 9, 11, 0.85);
}

[data-theme="light"] {
  --bg:             #FAFAFA;
  --bg-secondary:   #F4F4F5;
  --surface:        #FFFFFF;
  --elevated:       #F4F4F5;
  --border:         rgba(0, 0, 0, 0.06);
  --border-strong:  rgba(0, 0, 0, 0.12);

  --text:           #09090B;
  --text-secondary: #52525B;
  --text-muted:     #A1A1AA;

  --primary-glow:   rgba(139, 92, 246, 0.15);
  --secondary-glow: rgba(236, 72, 153, 0.12);

  --gradient-card:  linear-gradient(145deg, rgba(139,92,246,0.04), rgba(236,72,153,0.03));

  --glass:          rgba(255, 255, 255, 0.7);
  --glass-border:   rgba(0, 0, 0, 0.06);
  --glass-hover:    rgba(0, 0, 0, 0.04);

  --shadow-sm:      0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:      0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:      0 12px 40px rgba(0,0,0,0.12);
  --shadow-glow:    0 0 40px var(--primary-glow);

  --nav-bg:         rgba(250, 250, 250, 0.85);
  --overlay:        rgba(250, 250, 250, 0.85);
}

/* ---------- Design Tokens ---------- */
:root {
  --font-display: 'Space Grotesk', 'Noto Sans KR', sans-serif;
  --font-body:    'Noto Sans KR', 'Space Grotesk', sans-serif;

  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-full: 9999px;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s var(--ease-out);
  --transition-slow: 0.6s var(--ease-out);

  --max-w: 1200px;
  --nav-h: 64px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  transition: background 0.4s ease, color 0.4s ease;
}

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

a { color: var(--primary-light); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--secondary); }

img { max-width: 100%; display: block; }

/* ---------- Focus & A11y ---------- */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
}
.skip-link:focus { top: var(--space-md); }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ---------- App Shell ---------- */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#page-content {
  flex: 1;
  position: relative;
}

/* Page transition */
.page-enter {
  animation: pageIn 0.5s var(--ease-out) forwards;
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

/* ============================================================
   Scroll Reveal System
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal-scale.visible { opacity: 1; transform: scale(1); }

/* Stagger delays */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.10s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.20s; }
.stagger-5 { transition-delay: 0.25s; }
.stagger-6 { transition-delay: 0.30s; }

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xl);
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar.hidden {
  transform: translateY(-100%);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  transition: opacity var(--transition-fast);
  letter-spacing: -0.02em;
}
.navbar__logo:hover { opacity: 0.8; }

.navbar__logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-hero);
  flex-shrink: 0;
}

.navbar__links {
  display: flex;
  gap: var(--space-xs);
  list-style: none;
}

.navbar__link {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.navbar__link:hover {
  color: var(--text);
  background: var(--glass-hover);
}

.navbar__link.active {
  color: var(--text);
  background: var(--glass-hover);
}

.navbar__link.active::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--primary);
}

.navbar__right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar__auth {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.navbar__user {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.navbar__user strong {
  color: var(--primary-light);
}

/* Theme toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  background: var(--glass-hover);
  color: var(--text);
  border-color: var(--border-strong);
}

/* Mobile hamburger */
.navbar__hamburger {
  display: none;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  cursor: pointer;
  position: relative;
  color: var(--text);
}

.navbar__hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  position: absolute;
  left: 8px;
  transition: all 0.3s ease;
}
.navbar__hamburger span:nth-child(1) { top: 12px; }
.navbar__hamburger span:nth-child(2) { top: 17px; }
.navbar__hamburger span:nth-child(3) { top: 22px; }

.navbar__hamburger.open span:nth-child(1) { transform: rotate(45deg); top: 17px; }
.navbar__hamburger.open span:nth-child(2) { opacity: 0; }
.navbar__hamburger.open span:nth-child(3) { transform: rotate(-45deg); top: 17px; }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0; bottom: 0;
  background: var(--bg);
  z-index: 999;
  padding: var(--space-xl);
  flex-direction: column;
  gap: var(--space-sm);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-nav.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav__link {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: color var(--transition-fast);
}
.mobile-nav__link:hover,
.mobile-nav__link.active { color: var(--text); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.65rem 1.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.btn--primary:active { transform: translateY(0); }

.btn--secondary {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn--secondary:hover {
  background: var(--glass-hover);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
}
.btn--ghost:hover {
  color: var(--text);
  background: var(--glass-hover);
}

.btn--danger { background: var(--danger); color: #fff; }

.btn--sm { padding: 0.4rem 1rem; font-size: 0.82rem; }
.btn--lg { padding: 0.85rem 2rem; font-size: 0.95rem; }
.btn--block { width: 100%; }

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

/* Magnetic button */
.btn-magnetic {
  transition: transform 0.15s ease;
}

/* ============================================================
   Section Layout
   ============================================================ */
.section {
  padding: var(--space-4xl) var(--space-xl);
  max-width: var(--max-w);
  margin: 0 auto;
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-md);
}

.section__label::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--primary);
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
  max-width: 700px;
}

.section__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* ============================================================
   Cards — Glassmorphism v2
   ============================================================ */
.glass-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all 0.3s var(--ease-out);
}

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

/* ============================================================
   Landing — Hero (Parallax)
   ============================================================ */
.landing {
  padding-top: var(--nav-h);
}

.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: calc(100vh - var(--nav-h));
  padding: var(--space-3xl) var(--space-xl);
  overflow: hidden;
}

/* Parallax orbs */
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  pointer-events: none;
  will-change: transform;
  transition: transform 0.1s linear;
}

[data-theme="light"] .hero__orb { opacity: 0.15; }

.hero__orb--1 {
  width: 500px; height: 500px;
  background: var(--primary);
  top: -15%; left: -10%;
}
.hero__orb--2 {
  width: 400px; height: 400px;
  background: var(--secondary);
  bottom: -10%; right: -5%;
}
.hero__orb--3 {
  width: 300px; height: 300px;
  background: var(--warm);
  top: 20%; right: 5%;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.35rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: heroReveal 0.8s 0.2s var(--ease-out) forwards;
}

.hero__title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: heroReveal 0.8s 0.35s var(--ease-out) forwards;
}

.hero__title .gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradientFlow 6s ease infinite;
}

@keyframes gradientFlow {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
  opacity: 0;
  animation: heroReveal 0.8s 0.5s var(--ease-out) forwards;
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  opacity: 0;
  animation: heroReveal 0.8s 0.65s var(--ease-out) forwards;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  animation: heroReveal 0.8s 1s var(--ease-out) forwards;
}

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

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

@keyframes heroReveal {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Stats Counter
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  max-width: 700px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.stat {
  text-align: center;
  padding: var(--space-lg);
}

.stat__number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
  font-weight: 500;
}

/* ============================================================
   Feature Cards (Scroll-triggered)
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  text-align: left;
  padding: var(--space-xl);
  position: relative;
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  background: var(--glass-hover);
  border: 1px solid var(--border);
  color: var(--primary-light);
}

.feature-card__icon svg {
  width: 22px;
  height: 22px;
}

.feature-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.feature-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   Horizontal Scroll Portfolio
   ============================================================ */
.portfolio-section {
  padding: var(--space-4xl) 0;
  overflow: hidden;
}

.portfolio-section .section {
  padding-bottom: var(--space-xl);
}

.portfolio-scroll {
  display: flex;
  gap: var(--space-lg);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-md) var(--space-xl);
  scrollbar-width: none;
}

.portfolio-scroll::-webkit-scrollbar { display: none; }

.portfolio-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  will-change: transform;
}

.portfolio-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.portfolio-card__image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--gradient-card);
  transition: transform 0.5s var(--ease-out);
}

.portfolio-card:hover .portfolio-card__image {
  transform: scale(1.05);
}

.portfolio-card__image-wrap {
  overflow: hidden;
}

.portfolio-card__info {
  padding: var(--space-md) var(--space-lg);
}

.portfolio-card__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.portfolio-card__artist {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.portfolio-card__artist span {
  color: var(--primary-light);
}

/* Scroll indicator dots */
.scroll-indicator {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: var(--space-lg);
  padding: 0 var(--space-xl);
}

.scroll-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all 0.3s ease;
  cursor: pointer;
}

.scroll-dot.active {
  width: 24px;
  border-radius: var(--radius-full);
  background: var(--primary);
}

/* ============================================================
   Process Steps
   ============================================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  counter-reset: step;
}

.process-step {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  position: relative;
}

.process-step__number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--elevated);
  line-height: 1;
  margin-bottom: var(--space-md);
  letter-spacing: -0.05em;
}

[data-theme="light"] .process-step__number {
  color: var(--bg-secondary);
}

.process-step__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.process-step__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Connector line between steps */
.process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -var(--space-lg);
  width: 40px;
  height: 1px;
  background: linear-gradient(to right, var(--border-strong), transparent);
}

/* ============================================================
   CTA Section
   ============================================================ */
.cta-section {
  padding: var(--space-4xl) var(--space-xl);
}

.cta-box {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-3xl);
  text-align: center;
  border-radius: var(--radius-xl);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, var(--primary-glow), transparent 60%),
              radial-gradient(circle at 70% 70%, var(--secondary-glow), transparent 60%);
  pointer-events: none;
}

.cta-box__title {
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-box__desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.cta-box .btn { position: relative; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  padding: var(--space-2xl) var(--space-xl);
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer__content {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

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

.footer__links a {
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.footer__links a:hover { color: var(--text); }

/* ============================================================
   Login Page
   ============================================================ */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-xl);
  padding-top: calc(var(--nav-h) + var(--space-xl));
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: var(--space-xl);
  text-align: center;
}

.login-card__title {
  font-size: 1.6rem;
  margin-bottom: var(--space-xs);
}

.login-card__sub {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-bottom: var(--space-xl);
}

.login-card__tabs {
  display: flex;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-xl);
  padding: 3px;
}

.login-card__tab {
  flex: 1;
  padding: 0.55rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--radius-full);
}

.login-card__tab.active {
  background: var(--gradient-btn);
  color: #fff;
}

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

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

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

.login-card .btn {
  margin-top: var(--space-md);
}

.form-error {
  color: var(--danger);
  font-size: 0.82rem;
  margin-top: var(--space-xs);
}

/* ============================================================
   3D Gallery (keeping layout, updated colors)
   ============================================================ */
.gallery3d-page {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.gallery3d-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.gallery3d-hud {
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: var(--overlay);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-family: var(--font-display);
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  z-index: 100;
}

.gallery3d-hud kbd {
  display: inline-block;
  padding: 2px 6px;
  background: var(--glass-hover);
  border-radius: 4px;
  font-size: 0.75rem;
  margin: 0 2px;
  border: 1px solid var(--border);
}

.gallery3d-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: var(--overlay);
  z-index: 200;
  text-align: center;
  cursor: pointer;
  transition: opacity var(--transition-base);
}

.gallery3d-overlay h2 {
  font-size: 2rem;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.gallery3d-overlay p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.gallery3d-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

/* Template Selection UI */
.gallery3d-template-select {
  margin: var(--space-lg) 0;
}

.template-select-label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.template-cards {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.template-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-lg);
  min-width: 140px;
  background: var(--glass);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.template-card:hover:not(.disabled) {
  border-color: var(--primary);
  background: var(--primary-glow);
  transform: translateY(-3px);
}

.template-card.active {
  border-color: var(--primary);
  background: var(--primary-glow);
  box-shadow: var(--shadow-glow);
}

.template-card.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.template-card__icon { font-size: 1.8rem; }

.template-card__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}

.template-card__desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 120px;
}

/* Artwork detail popup in gallery */
.artwork-popup {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 500px;
  width: 90%;
  z-index: 300;
  box-shadow: var(--shadow-lg);
  display: none;
}

.artwork-popup.show {
  display: block;
  animation: pageIn 0.3s ease;
}

.artwork-popup__close {
  position: absolute;
  top: 12px; right: 12px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
}

.artwork-popup__image {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--glass);
}

.artwork-popup__title {
  font-size: 1.3rem;
  margin-bottom: var(--space-xs);
}

.artwork-popup__artist {
  color: var(--secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.artwork-popup__desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ============================================================
   Artist Page
   ============================================================ */
.artist-page {
  padding-top: calc(var(--nav-h) + var(--space-xl));
  padding-bottom: var(--space-2xl);
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--space-xl);
  padding-right: var(--space-xl);
}

.artist-page__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.artist-page__title {
  font-size: 2.2rem;
  margin-bottom: var(--space-sm);
}

.artist-page__subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

.artists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.artist-card {
  cursor: pointer;
  text-align: center;
  padding: var(--space-xl);
}

.artist-card__avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: var(--gradient-hero);
  color: #fff;
}

.artist-card__name {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.artist-card__age {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: var(--space-sm);
}

.artist-card__count {
  font-size: 0.8rem;
  color: var(--primary-light);
}

.artist-detail { animation: pageIn 0.4s ease; }
.artist-detail__back { margin-bottom: var(--space-lg); }

.artist-detail__profile {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
}

.artist-detail__avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  background: var(--gradient-hero);
  color: #fff;
  flex-shrink: 0;
}

.artist-detail__name { font-size: 1.6rem; }

.artist-detail__bio {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: var(--space-xs);
}

.artworks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.artwork-card {
  overflow: hidden;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.artwork-card__image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--glass);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: transform var(--transition-base);
}

.artwork-card:hover .artwork-card__image {
  transform: scale(1.05);
}

.artwork-card__info {
  padding: var(--space-md);
}

.artwork-card__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.artwork-card__date {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ============================================================
   AI Studio
   ============================================================ */
.ai-studio {
  padding-top: calc(var(--nav-h) + var(--space-xl));
  padding-bottom: var(--space-2xl);
  max-width: 1100px;
  margin: 0 auto;
  padding-left: var(--space-xl);
  padding-right: var(--space-xl);
}

.ai-studio__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.ai-studio__title {
  font-size: 2.2rem;
  margin-bottom: var(--space-sm);
}

.ai-studio__subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

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

.ai-tab {
  padding: 0.6rem 1.3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--glass);
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.ai-tab:hover {
  border-color: var(--primary);
  color: var(--text);
}

.ai-tab.active {
  background: var(--gradient-btn);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.ai-panel { display: none; animation: pageIn 0.4s ease; }
.ai-panel.active { display: block; }

.ai-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.ai-input-area,
.ai-output-area {
  padding: var(--space-lg);
}

.ai-input-area h3,
.ai-output-area h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.upload-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  margin-bottom: var(--space-md);
}

.upload-zone:hover {
  border-color: var(--primary);
  background: var(--primary-glow);
}

.upload-zone__icon { font-size: 2.5rem; margin-bottom: var(--space-sm); }
.upload-zone__text { color: var(--text-secondary); font-size: 0.9rem; }

.upload-zone__preview {
  max-height: 200px;
  border-radius: var(--radius-sm);
  margin-top: var(--space-md);
  object-fit: contain;
}

.ai-result {
  min-height: 250px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
}

.ai-result__placeholder { opacity: 0.5; }
.ai-result__content { width: 100%; text-align: left; }

.ai-result__story {
  line-height: 1.8;
  white-space: pre-wrap;
  font-size: 0.95rem;
  color: var(--text);
}

.ai-result__image { width: 100%; border-radius: var(--radius-sm); }

/* Spinner */
.spinner {
  display: inline-block;
  width: 36px;
  height: 36px;
  border: 2px solid var(--border);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}
.loading-state p { color: var(--text-secondary); font-size: 0.85rem; }

/* ============================================================
   Modal
   ============================================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 560px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.modal-backdrop.show .modal { transform: translateY(0); }

.modal__close {
  float: right;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.3rem;
  cursor: pointer;
}
.modal__close:hover { color: var(--text); }

/* ============================================================
   Textarea / Select (shared)
   ============================================================ */
.form-textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  resize: vertical;
  min-height: 80px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-select {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23A1A1AA' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.form-select option {
  background: var(--surface);
  color: var(--text);
}

/* ============================================================
   Toast
   ============================================================ */
.toast-container {
  position: fixed;
  top: calc(var(--nav-h) + var(--space-md));
  right: var(--space-lg);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  animation: toastIn 0.3s var(--ease-out), toastOut 0.3s 2.7s ease forwards;
  max-width: 320px;
  border: 1px solid var(--border);
}

.toast--success { background: var(--success); color: #fff; }
.toast--error   { background: var(--danger); color: #fff; }
.toast--info    { background: var(--primary); color: #fff; }

@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateY(-10px); }
}

/* ============================================================
   Storybook (keeping existing layout)
   ============================================================ */
.storybook-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  gap: var(--space-md);
  color: var(--text-secondary);
}

.storybook { max-width: 960px; margin: 0 auto; padding: var(--space-lg) var(--space-md); }

.storybook__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.storybook__title { font-size: 1.4rem; font-weight: 700; color: var(--secondary); }
.storybook__counter { font-size: 0.9rem; color: var(--text-secondary); font-weight: 500; }

.storybook__stage {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-height: 420px;
}

.storybook__arrow {
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 2.5rem;
  width: 48px; height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.storybook__arrow:hover:not(.disabled) {
  background: var(--primary-glow);
  border-color: var(--primary);
}
.storybook__arrow.disabled { opacity: 0.2; cursor: default; }

.storybook__book { flex: 1; perspective: 1200px; min-height: 400px; }

.storybook__book.flip-forward .storybook__spread { animation: flipForward 0.3s ease-in; }
.storybook__book.flip-backward .storybook__spread { animation: flipBackward 0.3s ease-in; }

@keyframes flipForward {
  0% { transform: rotateY(0deg); opacity: 1; }
  100% { transform: rotateY(-15deg); opacity: 0; }
}
@keyframes flipBackward {
  0% { transform: rotateY(0deg); opacity: 1; }
  100% { transform: rotateY(15deg); opacity: 0; }
}

.storybook__spread {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  min-height: 380px;
  transform-style: preserve-3d;
}

.storybook__illust {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(0,0,0,0.2);
  min-height: 280px;
}

.storybook__illust img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.storybook__illust-placeholder {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  width: 100%; height: 100%;
  color: var(--text-muted);
}

.storybook__text {
  display: flex;
  align-items: center;
  padding: var(--space-md);
}

.storybook__text p {
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--text);
  white-space: pre-line;
}

.storybook__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.storybook__dots { display: flex; gap: 6px; align-items: center; }

.storybook__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
}

.storybook__dot.active {
  background: var(--primary);
  border-color: var(--primary-light);
  transform: scale(1.3);
}

/* ============================================================
   Gallery3D extras
   ============================================================ */
.gallery3d-fade {
  position: absolute; inset: 0;
  background: #000; z-index: 15;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.gallery3d-minimap {
  position: absolute;
  bottom: 16px; right: 16px; z-index: 20;
  background: var(--overlay);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(4px);
}

.mobile-joystick {
  position: absolute;
  bottom: 32px; left: 32px; z-index: 25;
  display: flex;
  align-items: center;
  justify-content: center;
}

.joystick-base {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.15);
  border: 2px solid rgba(139, 92, 246, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.joystick-knob {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.6);
  transition: transform 0.05s;
}

.mobile-look-area {
  position: absolute;
  top: 0; right: 0;
  width: 60%; height: 100%;
  z-index: 22;
}

.pulse-glow { animation: pulseGlow 2s ease-in-out infinite; }

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 15px var(--primary-glow); }
  50%      { box-shadow: 0 0 35px var(--primary-glow); }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .navbar {
    padding: 0 var(--space-md);
  }
  .navbar__links { display: none; }
  .navbar__hamburger { display: block; }

  .hero { padding: var(--space-xl); }
  .hero__actions { flex-direction: column; width: 100%; max-width: 280px; }
  .hero__actions .btn { width: 100%; }

  .stats { grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }

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

  .process-grid { grid-template-columns: 1fr; }
  .process-step:not(:last-child)::after { display: none; }

  .portfolio-card { flex: 0 0 260px; }

  .ai-workspace { grid-template-columns: 1fr; }

  .storybook__spread { grid-template-columns: 1fr; padding: var(--space-md); }
  .storybook__illust { min-height: 180px; }
  .storybook__arrow { width: 36px; height: 36px; font-size: 1.5rem; }

  .footer__content { flex-direction: column; gap: var(--space-md); }
}

@media (max-width: 480px) {
  .hero__title { font-size: 2.2rem; }
  .stat__number { font-size: 1.6rem; }

  .template-cards { flex-direction: column; align-items: center; }
  .template-card { min-width: 200px; }

  .mobile-nav__link { font-size: 1.1rem; }
}

/* ============================================================
   Reduced Motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal, .reveal-left, .reveal-right, .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html { scroll-behavior: auto; }
}