@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* ─────────────────────────────────────────────────────────────
   TOKENS
───────────────────────────────────────────────────────────── */
:root {
  --bg:           #F8F7F4;
  --bg-2:         #F0EEE9;
  --bg-3:         #E8E5DF;
  --text:         #16150F;
  --text-2:       #7A7870;
  --text-3:       #B0ADA5;
  --accent:       #4F3FD8;
  --accent-light: #EAE7FF;
  --border:       #E2DED6;
  --surface:      #EDEBE5;

  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  --radius:    20px;
  --radius-sm: 10px;
  --radius-xs: 6px;

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --nav-h: 64px;
}

[data-theme="dark"] {
  --bg:           #111110;
  --bg-2:         #181816;
  --bg-3:         #212120;
  --text:         #F0EEE6;
  --text-2:       #888780;
  --text-3:       #555450;
  --accent:       #8B7BF5;
  --accent-light: #201E40;
  --border:       #2A2A28;
  --surface:      #1E1E1C;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

h1, h2, h3 {
  font-family: 'Playfair Display', Georgia, serif;
}

/* ─────────────────────────────────────────────────────────────
   UTILITIES
───────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 48px;
}

.section-header {
  margin-bottom: 64px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: var(--text);
  color: var(--bg);
}
.btn--primary:hover {
  opacity: 0.82;
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn--ghost:hover {
  background: var(--bg-2);
  transform: translateY(-1px);
}

.btn--large {
  padding: 18px 36px;
  font-size: 15px;
}

/* ─────────────────────────────────────────────────────────────
   ANIMATIONS
───────────────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.7s var(--ease) forwards;
}
.delay-1 { animation-delay: 0.12s; }
.delay-2 { animation-delay: 0.24s; }
.delay-3 { animation-delay: 0.36s; }
.delay-4 { animation-delay: 0.48s; }
.delay-5 { animation-delay: 0.60s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }

/* ─────────────────────────────────────────────────────────────
   NAV
───────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: transparent;
  transition: background 0.3s var(--ease), backdrop-filter 0.3s;
}

.nav.scrolled {
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav__logo {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--text);
}

.nav__links {
  display: flex;
  gap: 40px;
}

.nav__links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--text); }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: 5px 12px;
  cursor: pointer;
  font-family: var(--font);
  transition: border-color 0.2s;
}
.lang-toggle:hover { border-color: var(--text-3); }

.lang-opt {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-3);
  transition: color 0.2s;
  line-height: 1;
}
.lang-opt.active { color: var(--text); }

.lang-sep {
  font-size: 11px;
  color: var(--border);
  user-select: none;
  line-height: 1;
}

/* ─────────────────────────────────────────────────────────────
   HERO
───────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 0 40px;
  overflow: hidden;
}

.hero__bg-text {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(200px, 30vw, 420px);
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--bg-2);
  user-select: none;
  pointer-events: none;
  transition: color 0.4s;
  line-height: 1;
}

.hero__content {
  max-width: 760px;
  position: relative;
  z-index: 1;
}

.hero__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero__name {
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 28px;
}

.hero__sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  line-height: 1.65;
  color: var(--text-2);
  max-width: 480px;
  margin-bottom: 40px;
  font-weight: 400;
}

.hero__ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 40px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--text-3);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--text-2);
  animation: scanline 2s ease-in-out infinite;
}
@keyframes scanline {
  to { left: 100%; }
}

/* ─────────────────────────────────────────────────────────────
   WORK / PROJECTS
───────────────────────────────────────────────────────────── */
.work {
  padding: 120px 0;
  background: var(--bg);
}

.projects {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
  transition: transform 0.4s var(--ease), box-shadow 0.4s;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px -12px color-mix(in srgb, var(--accent) 20%, transparent);
}

.project-card__visual {
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 32px;
  position: relative;
}

.project-card__visual--tasty {
  background: linear-gradient(135deg, #FFF3E8 0%, #FFE0C8 50%, #FCCFA8 100%);
}
[data-theme="dark"] .project-card__visual--tasty {
  background: linear-gradient(135deg, #2A1A10 0%, #3D2415 50%, #4A2C1A 100%);
}

.project-card__visual--blink {
  background: linear-gradient(135deg, #E8EEFF 0%, #D0D8FF 50%, #B8C4FF 100%);
}

[data-theme="dark"] .project-card__visual--blink {
  background: linear-gradient(135deg, #101428 0%, #161B38 50%, #1C2240 100%);
}

/* Phone mockup */
.mock-phone {
  width: 160px;
  background: var(--text);
  border-radius: 28px;
  padding: 10px;
  box-shadow: 0 32px 80px -12px rgba(0,0,0,0.25);
  transition: background 0.4s;
}

.mock-phone__screen {
  background: #FFF8F2;
  border-radius: 20px;
  height: 300px;
  overflow: hidden;
  padding: 16px 12px;
}
[data-theme="dark"] .mock-phone__screen { background: #1A0E08; }

.mock-ui--tasty .mock-ui__bar {
  height: 10px;
  background: #FF8C42;
  border-radius: 6px;
  margin-bottom: 12px;
  width: 70%;
}
.mock-ui--tasty .mock-ui__card {
  height: 110px;
  background: linear-gradient(135deg, #FF8C42, #FF6B6B);
  border-radius: 14px;
  margin-bottom: 8px;
}
.mock-ui--tasty .mock-ui__card--sm {
  height: 50px;
  background: linear-gradient(135deg, #FFB347, #FF8C42);
  border-radius: 10px;
  margin-bottom: 12px;
}
.mock-ui__row {
  display: flex;
  gap: 8px;
}
.mock-ui__dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--border);
}
.mock-ui--tasty .mock-ui__dot { background: #FFCBA4; }

/* Desktop mockup */
.mock-screen {
  width: 320px;
  background: var(--text);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 32px 80px -12px rgba(0,0,0,0.25);
  transition: background 0.4s;
}

.mock-screen__chrome {
  height: 28px;
  background: #1E1E1E;
  display: flex;
  align-items: center;
  padding: 0 10px;
}
[data-theme="dark"] .mock-screen__chrome { background: #0A0A0A; }

.mock-screen__dots {
  display: flex;
  gap: 5px;
}
.mock-screen__dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #555;
}
.mock-screen__dots span:nth-child(1) { background: #FF5F57; }
.mock-screen__dots span:nth-child(2) { background: #FEBC2E; }
.mock-screen__dots span:nth-child(3) { background: #28C840; }

.mock-screen__body {
  background: #F0F2FF;
  height: 200px;
  overflow: hidden;
}
[data-theme="dark"] .mock-screen__body { background: #0E1220; }

.mock-ui--blink {
  display: flex;
  height: 100%;
}

.mock-ui__sidebar {
  width: 50px;
  background: rgba(0,0,0,0.06);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
[data-theme="dark"] .mock-ui__sidebar { background: rgba(255,255,255,0.04); }

.mock-ui__nav-item {
  height: 6px;
  border-radius: 3px;
  background: rgba(0,0,0,0.12);
}
.mock-ui__nav-item.active { background: var(--accent); }
[data-theme="dark"] .mock-ui__nav-item { background: rgba(255,255,255,0.08); }

.mock-ui__main {
  flex: 1;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mock-ui__graph {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 100px;
  background: rgba(255,255,255,0.5);
  border-radius: 8px;
  padding: 10px 8px 8px;
}
[data-theme="dark"] .mock-ui__graph { background: rgba(255,255,255,0.04); }

.mock-ui__graph .bar {
  flex: 1;
  background: var(--accent);
  border-radius: 3px 3px 0 0;
  opacity: 0.7;
}
.mock-ui__graph .bar:nth-child(4) { opacity: 1; }

.mock-ui__stat-row {
  display: flex;
  gap: 6px;
}
.mock-ui__stat {
  flex: 1;
  height: 24px;
  border-radius: 6px;
  background: rgba(0,0,0,0.07);
}
[data-theme="dark"] .mock-ui__stat { background: rgba(255,255,255,0.06); }

/* Project card text */
.project-card__info {
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
}

.project-card__meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.project-tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--surface);
  color: var(--text-2);
  transition: background 0.3s, color 0.3s;
}

.project-card__title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 16px;
  color: var(--text);
}

.project-card__desc {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-2);
  margin-bottom: 32px;
  max-width: 320px;
}

.project-card__cta {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s;
  letter-spacing: -0.01em;
}
.project-card:hover .project-card__cta {
  text-decoration: underline;
}

/* ─────────────────────────────────────────────────────────────
   EXPERIENCE
───────────────────────────────────────────────────────────── */
.experience {
  padding: 120px 0;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.timeline {
  display: grid;
  gap: 0;
}

.timeline__item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}
.timeline__item:first-child { border-top: 1px solid var(--border); }

.timeline__date {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.04em;
  padding-top: 4px;
}

.timeline__role {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  color: var(--text);
}

.timeline__company {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.timeline__desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-2);
  max-width: 560px;
}

/* ─────────────────────────────────────────────────────────────
   ABOUT
───────────────────────────────────────────────────────────── */
.about {
  padding: 120px 0;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about__text p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-2);
  margin-bottom: 16px;
}
.about__text p:last-child { margin-bottom: 0; }

.about__text .section-title {
  margin-bottom: 24px;
}

.skills-group {
  margin-bottom: 32px;
}
.skills-group:last-child { margin-bottom: 0; }

.skills-group__label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 10px;
}

.skills-group ul li {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.skills-group ul li:last-child { border-bottom: none; }

/* ─────────────────────────────────────────────────────────────
   CONTACT
───────────────────────────────────────────────────────────── */
.contact {
  padding: 120px 0;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}

.contact__inner {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact__title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 20px;
  color: var(--text);
}

.contact__sub {
  font-size: 16px;
  color: var(--text-2);
  margin-bottom: 40px;
  line-height: 1.6;
}

.contact__links {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 14px;
  color: var(--text-2);
}
.contact__links a:hover { color: var(--accent); }

/* ─────────────────────────────────────────────────────────────
   FOOTER
───────────────────────────────────────────────────────────── */
.footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

/* ─────────────────────────────────────────────────────────────
   CASE STUDY PAGES
───────────────────────────────────────────────────────────── */
.cs-hero {
  padding: calc(var(--nav-h) + 80px) 0 80px;
  border-bottom: 1px solid var(--border);
}

.cs-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 48px;
  transition: color 0.2s;
}
.cs-hero__back:hover { color: var(--text); }

.cs-hero__meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.cs-hero__title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 24px;
}

.cs-hero__logo {
  display: block;
  height: clamp(56px, 8vw, 96px);
  width: auto;
  object-fit: contain;
  margin-bottom: 24px;
}

.cs-hero__sub {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: 48px;
}

.cs-hero__stats {
  display: flex;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.cs-stat__label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 4px;
}
.cs-stat__value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.cs-visual {
  padding: 80px 0;
}

.cs-visual__full {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.cs-placeholder {
  background: var(--bg-2);
  border-radius: var(--radius);
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--border);
}

.cs-placeholder__label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cs-body {
  padding-bottom: 120px;
}

.cs-body .container {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 80px;
  align-items: start;
}

.cs-toc {
  position: sticky;
  top: calc(var(--nav-h) + 32px);
}

.cs-toc__title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
}

.cs-toc ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cs-toc ul li a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  display: block;
  padding: 6px 0;
  border-left: 2px solid var(--border);
  padding-left: 12px;
  transition: color 0.2s, border-color 0.2s;
}
.cs-toc ul li a:hover,
.cs-toc ul li a.active {
  color: var(--accent);
  border-color: var(--accent);
}

.cs-content section {
  margin-bottom: 80px;
  padding-top: 16px;
}

.cs-content h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text);
}

.cs-content h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--text);
}

.cs-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-2);
  margin-bottom: 16px;
  max-width: 620px;
}

.cs-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 24px;
  margin: 32px 0;
  background: var(--accent-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.cs-content blockquote p {
  font-size: 16px;
  font-style: italic;
  font-weight: 500;
  color: var(--text);
  margin: 0;
}

.cs-img-placeholder {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 32px 0;
}

.next-project {
  padding: 80px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.next-project__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
}

.next-project__title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 32px;
}

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .project-card {
    grid-template-columns: 1fr;
  }
  .project-card__visual {
    min-height: 280px;
  }
  .project-card__info {
    padding: 32px;
  }
  .timeline__item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .cs-body .container {
    grid-template-columns: 1fr;
  }
  .cs-toc {
    display: none;
  }
  .hero {
    padding: 0 24px;
  }
  .nav {
    padding: 0 24px;
  }
  .nav__links {
    gap: 24px;
  }
}

@media (max-width: 600px) {
  .nav__links {
    display: none;
  }
  .hero__bg-text {
    font-size: 140px;
    right: 20px;
    opacity: 0.7;
  }
  .container {
    padding: 0 20px;
  }
  .cs-hero__stats {
    gap: 28px;
  }
}