/* ============================================================
   Loading Screen
   ============================================================ */
.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 600ms ease;
}

.loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.loading-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: loadingPulse 1.4s ease-in-out infinite;
}

@keyframes loadingPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.6); opacity: 0.5; }
}

.loading-name {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

/* ============================================================
   CSS Variables & Reset
   ============================================================ */
:root {
  /* Colors */
  --color-bg: #000;
  --color-surface: #0a0a0a;
  --color-card: #111111;
  --color-card-hover: #1a1a1a;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #f5f5f7;
  --color-text-secondary: #86868b;
  --color-text-muted: #6e6e73;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ED;
  --color-white: #ffffff;

  /* Typography */
  --font-sf: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 8rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 200ms;
  --duration-base: 400ms;
  --duration-slow: 700ms;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sf);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 var(--space-lg);
  height: 52px;
  display: flex;
  align-items: center;
  background: linear-gradient(to bottom, rgba(8, 11, 18, 0.92), rgba(8, 11, 18, 0.78));
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--duration-base) var(--ease-out);
}

.nav-inner {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-white);
}

.nav-logo span {
  font-weight: 300;
  color: var(--color-text-secondary);
}

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

.nav-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
  padding: 0.35rem 0.6rem;
}

.nav-links a:hover {
  color: var(--color-white);
}

.nav-cta a {
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 999px;
  font-size: 0.8rem;
  padding: 0.3rem 0.85rem;
}

.nav-cta a:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.07);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 5px;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: #fff;
  border-radius: 2px;
  transition: transform 250ms ease, opacity 250ms ease;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }


.nav-links.open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 52px;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.96);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem;
  gap: 0.65rem;
  backdrop-filter: blur(20px);
  z-index: 999;
}

.nav-links.open li {
  display: block;
}

.nav-links.open a {
  font-size: 1rem;
  padding: 0.5rem 0;
}

.nav-links.open .nav-cta a {
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 999px;
  text-align: center;
  padding: 0.5rem;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  overflow: hidden;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 113, 227, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(134, 134, 139, 0.10) 0%, transparent 50%),
    linear-gradient(to bottom, rgba(0,0,0,0.35), rgba(0,0,0,0.55));
  pointer-events: none;
}

/* Subtle noise texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  animation: heroReveal 1.2s var(--ease-out) both;
}

.hero-content .btn-primary {
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.28);
}

@keyframes heroReveal {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-label {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-xl);
  font-weight: 400;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 500;
  transition:
    background var(--duration-fast),
    transform var(--duration-fast);
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px) scale(1.02);
}

.hero-scroll-hint {
  position: absolute;
  z-index: 2;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  animation: heroReveal 1.5s var(--ease-out) 0.4s both;
  width: 1px;
}

.hero-scroll-hint span {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ============================================================
   Sections — Shared
   ============================================================ */
.works,
.video-section,
.about {
  padding: var(--space-2xl) var(--space-lg);
}

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

.works .section-header {
  margin-bottom: 2rem;
}

.about .section-title,
.works .section-title {
  text-wrap: balance;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.section-sub {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================================
   Works Grid
   ============================================================ */
.works {
  background: var(--color-bg);
  border-top: 1px solid rgba(255,255,255,0.04);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}

.works-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* Work Card */
.work-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition:
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    border-color var(--duration-base);
  cursor: pointer;
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  border-color: rgba(255, 255, 255, 0.15);
}

.card-img {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #1a1a2e;
  overflow: hidden;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform var(--duration-slow) var(--ease-out);
}

.work-card:hover .card-img img {
  transform: scale(1.05);
}



.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.7) 0%,
    rgba(0, 0, 0, 0) 50%
  );
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: var(--space-sm);
}

.card-year,
.card-type {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  letter-spacing: 0.03em;
}

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

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 0.625rem;
}

.tag {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.6rem;
  border-radius: 980px;
  background: rgba(0, 113, 227, 0.15);
  color: var(--color-accent);
  border: 1px solid rgba(0, 113, 227, 0.25);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-white);
  margin-bottom: 0.25rem;
}

.card-sub {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ============================================================
   Showcase Section (Parallax Images)
   ============================================================ */
.video-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.showcase-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.showcase-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--color-border);
  background: #050505;
  transform: translate3d(0, 0, 0);
}

.showcase-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
  will-change: transform;
}

.showcase-item:hover img {
  transform: scale(1.04);
}

.showcase-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--space-sm);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0));
}

.showcase-label span {
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}

/* ============================================================
   About
   ============================================================ */
.about {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-top: clamp(2.5rem, 5vw, 3.75rem);
}

.about-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

.about-intro {
  position: static;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.about-details {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 1rem;
  align-items: start;
}

.about-kicker {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.625rem;
}

.about-intro .section-title {
  text-align: center;
  margin-bottom: 0.5rem;
}

.about-name-en {
  color: #8ec5ff;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.about-meta {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.about-desc {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.85;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.about-panel:first-child {
  grid-column: 1 / -1;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
}

.stat-num {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-white);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

.about-details {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--space-md);
  margin-top: 0.75rem;
}

.about-panel {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
}

.about-panel-title {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.skill-categories {
  display: grid;
  gap: 1rem;
}

.skill-category {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 0.6rem;
  background: rgba(255, 255, 255, 0.02);
}

.skill-category-title {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: #8ec5ff;
  margin-bottom: 0.5rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.4rem;
}

.tool-item {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  overflow: hidden;
}

.tool-trigger {
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: 0.55rem 0.42rem;
  text-align: center;
}

.tool-trigger:focus-visible {
  outline: 2px solid #7dd3fc;
  outline-offset: -2px;
}

.tool-icon {
  width: 42px;
  height: 42px;
  margin: 0 auto 0.34rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.32);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.25), 0 4px 10px rgba(0,0,0,0.35);
  position: relative;
}

.tool-icon::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 12px;
  border: 1px solid rgba(125,211,252,0.22);
  pointer-events: none;
}

.tool-icon i {
  font-size: 1rem;
  color: #fff;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,0.35));
}

.tool-item h5 {
  font-size: 0.74rem;
  color: var(--color-white);
  margin: 0;
  line-height: 1.25;
}

.tool-detail {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  padding: 0 0.55rem;
  transition: max-height 280ms ease, opacity 220ms ease, padding 220ms ease;
}

.tool-detail p {
  margin: 0;
  font-size: 0.72rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

.tool-item.expanded .tool-detail {
  max-height: 120px;
  opacity: 1;
  padding: 0 0.55rem 0.55rem;
}

.tool-item[data-fx="a"].expanded .tool-detail p { animation: fxFadeUp .28s ease both; }
.tool-item[data-fx="b"].expanded .tool-detail p { animation: fxFadeLeft .28s ease both; }
.tool-item[data-fx="c"].expanded .tool-detail p { animation: fxZoom .3s ease both; }
.tool-item[data-fx="d"].expanded .tool-detail p { animation: fxBlur .32s ease both; }
.tool-item[data-fx="e"].expanded .tool-detail p { animation: fxTilt .3s ease both; }
.tool-item[data-fx="f"].expanded .tool-detail p { animation: fxSlide .3s ease both; }

@keyframes fxFadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fxFadeLeft { from { opacity: 0; transform: translateX(10px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fxZoom { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
@keyframes fxBlur { from { opacity: 0; filter: blur(4px); } to { opacity: 1; filter: blur(0); } }
@keyframes fxTilt { from { opacity: 0; transform: rotate(-2deg) translateY(6px); } to { opacity: 1; transform: rotate(0) translateY(0); } }
@keyframes fxSlide { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

.icon-figma { background: linear-gradient(135deg, #f24e1e, #a259ff); }
.icon-xd { background: linear-gradient(135deg, #5b21b6, #ec4899); }
.icon-ai { background: linear-gradient(135deg, #f59e0b, #fb7185); }
.icon-ps { background: linear-gradient(135deg, #0ea5e9, #2563eb); }
.icon-affd { background: linear-gradient(135deg, #06b6d4, #0f766e); }
.icon-affp { background: linear-gradient(135deg, #14b8a6, #15803d); }
.icon-comfy { background: linear-gradient(135deg, #22c55e, #166534); }
.icon-openclaw { background: linear-gradient(135deg, #6366f1, #0ea5e9); }
.icon-claude { background: linear-gradient(135deg, #d97706, #92400e); }
.icon-codex { background: linear-gradient(135deg, #3b82f6, #1e40af); }
.icon-multimodal { background: linear-gradient(135deg, #ec4899, #8b5cf6); }
.icon-html { background: linear-gradient(135deg, #f97316, #ea580c); }
.icon-css { background: linear-gradient(135deg, #2563eb, #1d4ed8); }
.icon-cis { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.icon-pack { background: linear-gradient(135deg, #fb7185, #be123c); }
.icon-ads { background: linear-gradient(135deg, #22d3ee, #0e7490); }
.icon-window { background: linear-gradient(135deg, #facc15, #ca8a04); }
.icon-print { background: linear-gradient(135deg, #64748b, #334155); }
.icon-skill { background: linear-gradient(135deg, #14b8a6, #0f766e); }

.timeline {
  position: relative;
  display: grid;
  gap: 0.65rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(0, 113, 227, 0.2), rgba(0, 113, 227, 0.7));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 0.875rem;
}

.timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin-top: 0.45rem;
  margin-left: 6px;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.18);
}

.timeline-range {
  font-size: 0.75rem;
  color: #8ec5ff;
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.timeline-content h4 {
  font-size: 0.95rem;
  color: var(--color-white);
  margin-bottom: 0.2rem;
}

.timeline-content p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.value-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 0.6rem;
}

.value-item h4 {
  margin: 0 0 0.2rem;
  font-size: 0.85rem;
  color: var(--color-white);
}

.value-item p {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--color-text-secondary);
}

.about-contact {
  display: flex;
  justify-content: center;
  width: 100%;
  text-align: center;
  margin-top: var(--space-lg);
}

.about-contact .btn-outline {
  margin-inline: auto;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-white);
  transition:
    border-color var(--duration-fast),
    background var(--duration-fast);
}

.btn-outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.05);
}

.cta-bar {
  display: flex;
  justify-content: center;
  padding: 2.5rem var(--space-lg);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cta-btn {
  font-size: 1rem;
  padding: 0.75rem 2.5rem;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================================
   Responsive — Tablet
   ============================================================ */
@media (max-width: 1024px) {
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-inner {
    grid-template-columns: 1fr;
  }

  .about-intro {
    position: static;
  }

  .about-details {
    grid-template-columns: 1fr;
  }

  .about-intro .section-title,
  .about-kicker,
  .about-meta,
  .about-desc {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }

  .about-stats {
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ============================================================
   Responsive — Mobile
   ============================================================ */
@media (max-width: 640px) {
  :root {
    --space-2xl: 4rem;
  }

  .nav-hamburger { display: flex; }
  .nav-links { display: none; }
  .nav-links.open { display: flex; }

  .works-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

  .hero-title {
    font-size: 2.5rem;
    word-break: break-word;
  }

  .cta-bar {
    padding: 1.5rem 1rem 2rem;
  }

  .cta-btn {
    width: min(100%, 320px);
    text-align: center;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .about-panel {
    padding: 1rem;
  }

  .tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .timeline-item {
    grid-template-columns: 18px 1fr;
    gap: 0.65rem;
  }

  .timeline::before {
    left: 8px;
  }

  .timeline-dot {
    margin-left: 4px;
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-xs);
    text-align: center;
  }
}

/* ============================================================
   Reveal Animation
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

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

/* ============================================================
   Lightbox
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.96);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 250ms ease;
}

.lightbox.active {
  opacity: 1;
  pointer-events: all;
}

.lightbox-img-wrap {
  position: relative;
  max-width: 90vw;
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img-wrap img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 60px rgba(0,0,0,0.8);
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox-close {
  position: fixed;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  border: 1.5px solid rgba(255,255,255,0.25);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 200ms, border-color 200ms;
  z-index: 10000;
  font-size: 26px;
  color: #fff;
  line-height: 1;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.lightbox-close:hover { background: rgba(255,255,255,0.2); }

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 200ms;
  z-index: 10;
  font-size: 28px;
  color: #fff;
  line-height: 1;
}

.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
.lightbox-prev:hover,
.lightbox-next:hover { background: rgba(255,255,255,0.25); }

.lightbox-counter {
  margin-top: 18px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
  user-select: none;
}

.lightbox-single .lightbox-prev,
.lightbox-single .lightbox-next { display: none; }