:root {
  --bg-deep: #0a0a0f;
  --bg-surface: #12121a;
  --bg-elevated: #1a1a26;
  --text: #f4f4f8;
  --text-muted: #9898a8;
  --accent-violet: #a78bfa;
  --accent-cyan: #22d3ee;
  --accent-magenta: #e879f9;
  --gradient-start: #6366f1;
  --gradient-mid: #a855f7;
  --gradient-end: #06b6d4;
  --border: rgba(255, 255, 255, 0.08);
  --glow: rgba(99, 102, 241, 0.35);
  --radius: 16px;
  --radius-sm: 10px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Outfit", var(--font-sans);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-deep);
  overflow-x: hidden;
}

.bg-gradient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(34, 211, 238, 0.12), transparent),
    radial-gradient(ellipse 50% 30% at 0% 100%, rgba(232, 121, 249, 0.1), transparent),
    var(--bg-deep);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 5vw;
  background: rgba(10, 10, 15, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease-out), opacity 0.5s var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.lang-switch {
  display: inline-flex;
  padding: 3px;
  border-radius: 999px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  gap: 2px;
}

.lang-btn {
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.65rem;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  color: var(--text-muted);
  background: transparent;
  transition: color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}

.lang-btn:hover {
  color: var(--text);
}

.lang-btn.is-active {
  color: var(--bg-deep);
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
}

.nav {
  display: flex;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .header-right {
    gap: 0.75rem;
  }

  .nav {
    gap: 1rem;
  }
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.25s var(--ease-out), opacity 0.4s var(--ease-out);
}

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

main {
  padding-top: 5.5rem;
}

.hero {
  min-height: calc(100vh - 5.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 5vw 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-layout {
  display: grid;
  gap: 2.5rem 3rem;
  align-items: center;
}

@media (min-width: 880px) {
  .hero-layout {
    grid-template-columns: 1fr minmax(240px, 280px);
  }
}

.hero-copy {
  min-width: 0;
}

.hero-photo-wrap {
  margin: 0;
  justify-self: center;
}

@media (min-width: 880px) {
  .hero-photo-wrap {
    justify-self: end;
  }
}

.hero-photo {
  display: block;
  width: min(280px, 72vw);
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(167, 139, 250, 0.15);
}

.hero-eyebrow {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-violet);
  margin: 0 0 0.75rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 8vw, 4.25rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
}

.gradient-text {
  background: linear-gradient(120deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 8s ease infinite;
}

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

.hero-sub {
  font-size: clamp(1.0625rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  max-width: min(52ch, 100%);
  margin: 0 0 2.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), box-shadow 0.3s var(--ease-out), opacity 0.4s var(--ease-out);
}

.btn-primary {
  color: var(--bg-deep);
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
  box-shadow: 0 0 0 0 var(--glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px var(--glow);
}

.btn-ghost {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: rgba(34, 211, 238, 0.4);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.btn-bilingual {
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
  line-height: 1.25;
  text-align: center;
}

.btn-line-primary {
  font-size: 0.9375rem;
  font-weight: 700;
}

.btn-line-secondary {
  font-size: 0.7rem;
  font-weight: 500;
  opacity: 0.82;
  letter-spacing: 0.02em;
}

.btn-primary .btn-line-secondary {
  color: rgba(10, 10, 15, 0.75);
}

.btn-ghost .btn-line-secondary {
  color: var(--text-muted);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

.section {
  padding: 5rem 5vw;
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 2.5rem;
  color: var(--text);
}

.about-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
}

.about-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  color: var(--text-muted);
}

.about-card p {
  margin: 0;
}

.about-card p + p {
  margin-top: 1rem;
}

.about-photo-card {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.about-photo {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  vertical-align: middle;
}

.gallery-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.gallery-item {
  margin: 0;
}

.gallery-item-frame {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  aspect-ratio: 4 / 3;
}

.gallery-item-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s var(--ease-out);
}

.gallery-item:hover .gallery-item-frame img {
  transform: scale(1.05);
}

.gallery-caption {
  margin: 0.65rem 0 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.35;
}

.skills-lead {
  color: var(--text-muted);
  max-width: 42ch;
  margin: -1.25rem 0 2rem;
  font-size: 1.0625rem;
}

.skills-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 700px) {
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skill-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.skill-card:hover {
  border-color: rgba(167, 139, 250, 0.35);
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

.skill-card-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3.25rem;
  min-height: 3.25rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.skill-card-badge--html {
  color: #f97316;
  background: rgba(249, 115, 22, 0.12);
  border-color: rgba(249, 115, 22, 0.35);
}

.skill-card-badge--css {
  color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.1);
  border-color: rgba(34, 211, 238, 0.35);
}

.skill-card-badge--js {
  color: #facc15;
  background: rgba(250, 204, 21, 0.12);
  border-color: rgba(250, 204, 21, 0.35);
}

.skill-card-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.skill-card-desc {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stat {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent-violet), var(--accent-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.work-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 700px) {
  .work-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.work-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.work-card:hover {
  border-color: rgba(167, 139, 250, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.work-card-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.work-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--ease-out);
}

.work-card:hover .work-card-thumb img {
  transform: scale(1.04);
}

.work-card-inner {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.work-card-actions {
  margin-top: auto;
  padding-top: 1.25rem;
}

.btn-work-cta {
  width: 100%;
  padding-top: 0.55rem;
  padding-bottom: 0.55rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

.btn-work-cta .btn-line-primary {
  font-size: 0.875rem;
}

.btn-work-cta .btn-line-secondary {
  font-size: 0.65rem;
}

.work-card-inner p[data-lang] {
  margin: 0;
}

.work-card-inner p[data-lang] + p[data-lang] {
  margin-top: 0;
}

.work-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.work-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--text);
}

.work-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.section-contact {
  text-align: center;
  padding-bottom: 6rem;
}

.contact-lead {
  color: var(--text-muted);
  max-width: 36ch;
  margin: 0 auto 1.75rem;
}

.section-contact .btn-primary {
  display: inline-flex;
}

.site-footer {
  padding: 2rem 5vw;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.site-footer p {
  margin: 0;
}

/* Initial hidden state for JS-driven fade-in */
[data-fade].js-ready {
  opacity: 0;
  transform: translateY(16px);
}

[data-fade].js-ready.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.85s var(--ease-out),
    transform 0.85s var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.fade-in-up.js-ready {
  transform: translateY(24px);
}

/* Scroll reveal: fade in when entering, fade out when leaving (JS adds .anim-ready) */
html.anim-ready .reveal,
html.anim-ready .reveal-child {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
}

html.anim-ready .reveal.is-in-view,
html.anim-ready .reveal-child.is-in-view {
  opacity: 1;
  transform: translateY(0);
}

html.anim-ready .reveal.is-out-view,
html.anim-ready .reveal-child.is-out-view {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.55s var(--ease-out),
    transform 0.55s var(--ease-out);
}

html.anim-ready .work-card.reveal-child.is-in-view {
  transition-delay: calc(var(--i, 0) * 0.08s);
}

html.anim-ready .skill-card.reveal-child.is-in-view {
  transition-delay: calc(var(--i, 0) * 0.08s);
}

/* Footer subtle fade */
.fade-footer {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.fade-footer.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .gradient-text {
    animation: none;
    background-position: 0% center;
  }

  [data-fade].js-ready,
  [data-fade].js-ready.is-visible,
  html.anim-ready .reveal,
  html.anim-ready .reveal-child,
  html.anim-ready .reveal.is-in-view,
  html.anim-ready .reveal-child.is-in-view,
  html.anim-ready .reveal.is-out-view,
  html.anim-ready .reveal-child.is-out-view,
  .fade-footer,
  .fade-footer.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}