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

:root {
  --bg: #0a0a0f;
  --bg2: #111118;
  --surface: #16161f;
  --surface2: #1e1e2a;
  --border: rgba(255,255,255,0.08);
  --accent: #7c6af7;
  --accent2: #a78bfa;
  --accent-glow: rgba(124,106,247,0.25);
  --text: #f0f0f5;
  --text-muted: #8888aa;
  --text-dim: #5a5a72;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 32px rgba(0,0,0,0.5);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { line-height: 1.2; }
em { font-style: italic; color: var(--accent2); }

.section-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 64px;
}

.center { text-align: center; }
.center.section-sub { margin-left: auto; margin-right: auto; }

/* ===== BUTTONS ===== */
.btn-primary, .btn-secondary, .btn-nav {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent2);
  transform: translateY(-2px);
  box-shadow: 0 0 36px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent2);
  transform: translateY(-2px);
}

.btn-nav {
  background: var(--accent);
  color: #fff;
  padding: 9px 22px;
  font-size: 0.85rem;
}
.btn-nav:hover { background: var(--accent2); }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  background: rgba(10,10,15,0.82);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent2);
  letter-spacing: -1px;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: 120px 80px 80px;
  max-width: 1160px;
  margin: 0 auto;
}

.hero-content { flex: 1; max-width: 580px; }

.hero-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero floating cards */
.hero-visual {
  flex-shrink: 0;
  position: relative;
  width: 300px;
  height: 340px;
}

.hero-card {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow);
  animation: float 6s ease-in-out infinite;
}

.card-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.card-value {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent2);
}

.card-1 { top: 0; left: 0; animation-delay: 0s; }
.card-2 { top: 110px; right: 0; animation-delay: 1.5s; }
.card-3 { bottom: 0; left: 30px; animation-delay: 3s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

/* ===== ABOUT ===== */
.about {
  padding: 120px 0;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.about-text h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1.02rem;
  line-height: 1.75;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.3s;
}
.stat:hover { border-color: var(--accent); }

.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent2);
  line-height: 1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===== CASE STUDIES ===== */
.cases {
  padding: 120px 0;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.case-card::before {
  content: attr(data-index);
  position: absolute;
  top: -20px;
  right: 24px;
  font-family: 'Playfair Display', serif;
  font-size: 8rem;
  font-weight: 800;
  color: rgba(124,106,247,0.06);
  line-height: 1;
  pointer-events: none;
}

.case-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4), 0 0 32px var(--accent-glow);
}

.case-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.case-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #6c47ff, #a78bfa);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.logo-2 { background: linear-gradient(135deg, #635bff, #85d2ff); }
.logo-3 { background: linear-gradient(135deg, #ff385c, #ff6f6f); }
.logo-4 { background: linear-gradient(135deg, #ff7a59, #ffbd59); }

.case-company {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.case-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.case-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

.case-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.case-findings {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.case-findings li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.case-findings li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

.case-metrics {
  display: flex;
  gap: 20px;
  padding: 16px;
  background: var(--surface2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-val {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent2);
}

.metric-lbl {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.case-cta {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  margin-top: auto;
  transition: color 0.2s, gap 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.case-cta:hover { color: var(--accent2); }

/* ===== SKILLS ===== */
.skills {
  padding: 120px 0;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
}

.skill-item:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.skill-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.skill-item h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.skill-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===== CONTACT ===== */
.contact { padding: 120px 0; }

.contact-box {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.contact-box h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 20px;
}

.contact-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 40px;
}

.contact-links { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.footer {
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    padding: 100px 24px 60px;
    text-align: center;
  }
  .hero-content { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-visual { width: 100%; height: 200px; }
  .card-1 { top: 0; left: 0; }
  .card-2 { top: 0; right: 0; }
  .card-3 { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .cases-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }

  .nav-links { display: none; }
  .hamburger { display: block; }
}

@media (max-width: 540px) {
  .skills-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}