/* ─────────────────────────────────────────────────────────────────────────
   KAUSHIK PATEL · Personal Site Stylesheet
   Palette: Deep slate/navy + electric teal accent — executive, technical, modern
   Fonts: Cabinet Grotesk (display) + Satoshi (body)
   ───────────────────────────────────────────────────────────────────────── */

/* ── Design Tokens ─────────────────────────────────────────────────────── */
:root,
[data-theme='light'] {
  /* Surfaces */
  --color-bg: #f0f2f5;
  --color-surface: #ffffff;
  --color-surface-2: #f7f9fc;
  --color-surface-offset: #e8ecf1;
  --color-surface-dynamic: #dce1e9;
  --color-divider: #d0d6e0;
  --color-border: #c4ccd8;

  /* Text */
  --color-text: #0f1523;
  --color-text-muted: #5a6478;
  --color-text-faint: #9aa3b2;
  --color-text-inverse: #f0f2f5;

  /* Primary Accent — electric teal */
  --color-primary: #0891b2;
  --color-primary-hover: #0e7490;
  --color-primary-active: #155e75;
  --color-primary-highlight: #cffafe;

  /* Secondary — amber for highlights */
  --color-secondary: #d97706;

  /* Supporting */
  --color-success: #059669;
  --color-blue: #2563eb;
  --color-purple: #7c3aed;
  --color-warning: #d97706;
  --color-gold: #b45309;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15,21,35,0.06), 0 1px 2px rgba(15,21,35,0.04);
  --shadow-md: 0 4px 16px rgba(15,21,35,0.08), 0 2px 6px rgba(15,21,35,0.05);
  --shadow-lg: 0 12px 40px rgba(15,21,35,0.12), 0 4px 16px rgba(15,21,35,0.08);

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Type */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

[data-theme='dark'] {
  --color-bg: #080d16;
  --color-surface: #0d1422;
  --color-surface-2: #111929;
  --color-surface-offset: #151e2e;
  --color-surface-dynamic: #1a2436;
  --color-divider: #1e2a3d;
  --color-border: #243048;
  --color-text: #e8edf5;
  --color-text-muted: #8896aa;
  --color-text-faint: #4a5568;
  --color-text-inverse: #080d16;

  --color-primary: #22d3ee;
  --color-primary-hover: #67e8f9;
  --color-primary-active: #a5f3fc;
  --color-primary-highlight: #164e63;

  --color-secondary: #fbbf24;
  --color-success: #10b981;
  --color-blue: #60a5fa;
  --color-purple: #a78bfa;
  --color-warning: #fbbf24;
  --color-gold: #f59e0b;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.25);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #080d16;
    --color-surface: #0d1422;
    --color-surface-2: #111929;
    --color-surface-offset: #151e2e;
    --color-surface-dynamic: #1a2436;
    --color-divider: #1e2a3d;
    --color-border: #243048;
    --color-text: #e8edf5;
    --color-text-muted: #8896aa;
    --color-text-faint: #4a5568;
    --color-text-inverse: #080d16;
    --color-primary: #22d3ee;
    --color-primary-hover: #67e8f9;
    --color-primary-highlight: #164e63;
    --color-secondary: #fbbf24;
    --color-success: #10b981;
    --color-blue: #60a5fa;
    --color-purple: #a78bfa;
    --color-warning: #fbbf24;
    --color-gold: #f59e0b;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.25);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  }
}

/* ── Base Reset ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
h1,h2,h3,h4,h5,h6 { text-wrap: balance; line-height: 1.15; }
p, li { text-wrap: pretty; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
::selection { background: color-mix(in oklab, var(--color-primary) 25%, transparent); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }

/* ── Layout Utilities ──────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

/* ── Scroll Animations ─────────────────────────────────────────────────── */
.fade-in { opacity: 1; }
@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 70%;
  }
}
@keyframes reveal-fade { to { opacity: 1; } }

/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.75em 1.6em;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-surface-offset); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary-highlight); }

.btn-lg { padding: 0.9em 2em; font-size: var(--text-base); }
.btn-full { width: 100%; justify-content: center; }

/* ── Section Shared ────────────────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }
.section-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.1;
}
.section-sub {
  margin-top: var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 540px;
  margin-inline: auto;
}

/* ══════════════════════════════════════════════════════════════════════════
   HEADER / NAV
══════════════════════════════════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition-interactive);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-base);
  color: var(--color-text);
  flex-shrink: 0;
  transition: opacity var(--transition-interactive);
}
.logo:hover { opacity: 0.8; }
.logo-text { letter-spacing: -0.01em; }

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-left: auto;
}
.main-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.main-nav a:hover { color: var(--color-primary); }
.main-nav .nav-cta {
  background: var(--color-primary);
  color: var(--color-bg);
  padding: 0.5em 1.2em;
  border-radius: var(--radius-md);
  font-weight: 600;
}
.main-nav .nav-cta:hover { background: var(--color-primary-hover); color: var(--color-bg); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); margin-left: var(--space-4); }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover { background: var(--color-surface-offset); color: var(--color-text); }

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
}
.mobile-menu-btn span {
  display: block;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16)) var(--space-6);
  border-top: 1px solid var(--color-divider);
  gap: var(--space-1);
}
.mobile-nav a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  transition: color var(--transition-interactive);
}
.mobile-nav a:hover { color: var(--color-primary); }
.mobile-nav.open { display: flex; }

@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-menu-btn { display: flex; }
}

/* ══════════════════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: calc(100dvh - 65px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

/* Animated grid background */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 80%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: float 8s ease-in-out infinite;
}
.hero-glow-1 {
  width: 500px;
  height: 400px;
  top: -10%;
  left: 10%;
  background: color-mix(in oklab, var(--color-primary) 12%, transparent);
  animation-delay: 0s;
}
.hero-glow-2 {
  width: 400px;
  height: 350px;
  bottom: 5%;
  right: 5%;
  background: color-mix(in oklab, var(--color-blue) 8%, transparent);
  animation-delay: -4s;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(20px, -15px); }
  66% { transform: translate(-15px, 10px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
}

.hero-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-8);
  min-width: 0;
}

/* ── Hero Photo ─────────────────────────────────────────────────────────── */
.hero-right {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-photo-wrap {
  position: relative;
  width: clamp(240px, 26vw, 360px);
  aspect-ratio: 3 / 4;
  margin-top: -40px;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius-xl);
  border: 2px solid color-mix(in oklab, var(--color-primary) 25%, var(--color-border));
  box-shadow: var(--shadow-lg), 0 0 0 1px color-mix(in oklab, var(--color-primary) 10%, transparent);
  position: relative;
  z-index: 1;
  display: block;
}

.hero-photo-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse at center, color-mix(in oklab, var(--color-primary) 15%, transparent), transparent 70%);
  border-radius: var(--radius-xl);
  z-index: 0;
  pointer-events: none;
}

@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
  }
  .hero-right {
    order: -1;
  }
  .hero-photo-wrap {
    width: clamp(140px, 40vw, 220px);
    aspect-ratio: 1 / 1;
  }
  .hero-photo {
    border-radius: 50%;
  }
}

/* ── Hero Identity Tagline ────────────────────────────────────────────── */
.hero-identity {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: clamp(0.85rem, 1.1vw, var(--text-base));
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .hero-identity {
    flex-wrap: wrap;
    white-space: normal;
    font-size: var(--text-sm);
  }
}
.identity-dot {
  color: var(--color-primary);
  font-weight: 900;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 10%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 25%, transparent);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 14ch;
  display: flex;
  flex-direction: column;
}
.hero-line { display: block; }
.hero-line-accent {
  color: var(--color-primary);
  position: relative;
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.6;
}
.hero-sub strong { color: var(--color-text); font-weight: 700; }

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  width: 100%;
  max-width: 680px;
}
.hero-stat { display: flex; flex-direction: column; gap: 2px; }
.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1;
}
.stat-unit {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 900;
  color: var(--color-primary);
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  max-width: 10ch;
  line-height: 1.3;
}
.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
  flex-shrink: 0;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  animation: bounce 2.5s ease-in-out infinite;
}
.scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--color-text-faint), transparent);
}
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(6px); } }

/* Delay helpers */
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }

@media (max-width: 600px) {
  .hero-stats { gap: var(--space-4); }
  .hero-stat-divider { display: none; }
}

/* ══════════════════════════════════════════════════════════════════════════
   LEADERSHIP PHILOSOPHY
══════════════════════════════════════════════════════════════════════════ */
.philosophy {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: var(--color-bg);
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.philosophy-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow: hidden;
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.philosophy-card:hover {
  border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border));
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.philosophy-number {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 900;
  line-height: 1;
  color: color-mix(in oklab, var(--color-primary) 10%, transparent);
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
}

.philosophy-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-primary) 10%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 20%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.philosophy-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.2;
}

.philosophy-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
}

@media (max-width: 900px) {
  .philosophy-grid { grid-template-columns: 1fr; }
}
@media (min-width: 600px) and (max-width: 900px) {
  .philosophy-grid { grid-template-columns: 1fr 1fr; }
}

/* ══════════════════════════════════════════════════════════════════════════
   EXPERTISE
══════════════════════════════════════════════════════════════════════════ */
.expertise {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: var(--color-surface);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-6);
}

.expertise-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.expertise-card:hover {
  border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border));
  box-shadow: var(--shadow-md), 0 0 0 1px color-mix(in oklab, var(--color-primary) 15%, transparent);
  transform: translateY(-2px);
}

.expertise-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-primary) 10%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 20%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.expertise-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
}

.expertise-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}
.expertise-tags span {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 8%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-primary) 20%, transparent);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

/* ══════════════════════════════════════════════════════════════════════════
   STORY / TIMELINE
══════════════════════════════════════════════════════════════════════════ */
.story {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: var(--color-bg);
}

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 820px;
  margin: 0 auto;
}

.timeline-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-8);
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 18px;
}
.marker-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-surface-dynamic);
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  transition: background var(--transition-interactive), border-color var(--transition-interactive);
  z-index: 1;
}
.timeline-item:hover .marker-dot {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.timeline-item[data-era='present'] .marker-dot {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--color-primary) 20%, transparent);
}

.marker-line {
  flex: 1;
  width: 2px;
  background: var(--color-divider);
  margin-top: var(--space-2);
  min-height: var(--space-8);
}
.timeline-item:last-child .marker-line { display: none; }

.timeline-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.timeline-card.active {
  border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border));
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--color-primary) 12%, transparent), var(--shadow-sm);
}
.timeline-item:hover .timeline-card {
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
  box-shadow: var(--shadow-md);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.timeline-year {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}
.timeline-company {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 10%, transparent);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}
.timeline-badge {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-faint);
  margin-left: auto;
}

.timeline-role {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.timeline-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-5);
}
.timeline-card p strong { color: var(--color-text); font-weight: 600; }

.timeline-metrics {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.t-metric { display: flex; flex-direction: column; gap: 2px; }
.t-metric span {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}
.t-metric label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.3;
}

@media (max-width: 600px) {
  .timeline-item { grid-template-columns: 1fr; }
  .timeline-marker { display: none; }
}

/* ══════════════════════════════════════════════════════════════════════════
   IMPACT / METRICS
══════════════════════════════════════════════════════════════════════════ */
.impact {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: var(--color-surface);
}

.impact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

.chart-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  height: 100%;
}
.chart-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.chart-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.chart-wrap { position: relative; height: 280px; }

.impact-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.impact-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.impact-card:hover {
  border-color: color-mix(in oklab, var(--icon-color, var(--color-primary)) 30%, var(--color-border));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.impact-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: color-mix(in oklab, var(--icon-color, var(--color-primary)) 10%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--icon-color, var(--color-primary));
  margin-bottom: var(--space-2);
}

.impact-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1;
  display: inline;
}
.impact-unit {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 900;
  color: var(--color-primary);
  display: inline;
}
.impact-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.impact-context {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

@media (max-width: 960px) {
  .impact-layout { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .impact-stats-grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════════════════════════════
   PROJECTS
══════════════════════════════════════════════════════════════════════════ */
.projects {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: var(--color-bg);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.project-card:hover {
  border-color: color-mix(in oklab, var(--color-primary) 35%, var(--color-border));
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.project-card-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.project-visual {
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.project-card-featured .project-visual { min-height: 100%; }

.project-visual-1 { background: linear-gradient(135deg, #0c2340 0%, #0e4c6e 50%, #0891b2 100%); }
.project-visual-2 { background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%); }
.project-visual-3 { background: linear-gradient(135deg, #0d1b2a 0%, #1b2838 50%, #2d4a6b 100%); }
.project-visual-4 { background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%); }
.project-visual-5 { background: linear-gradient(135deg, #1a0533 0%, #2d1060 50%, #4c1d95 100%); }

.project-icon-large { color: rgba(255,255,255,0.5); }

.project-body { padding: var(--space-8); display: flex; flex-direction: column; gap: var(--space-3); }

.project-status {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  width: fit-content;
}
.project-status.live {
  background: color-mix(in oklab, var(--color-success) 12%, transparent);
  color: var(--color-success);
  border: 1px solid color-mix(in oklab, var(--color-success) 25%, transparent);
}
.project-status.shipped {
  background: color-mix(in oklab, var(--color-primary) 10%, transparent);
  color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary) 22%, transparent);
}

.project-body h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-text);
}

.project-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.project-story {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  font-style: italic;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-divider);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}
.project-tech span {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--space-2);
  transition: color var(--transition-interactive);
}
.project-link:hover { color: var(--color-primary-hover); }

@media (max-width: 768px) {
  .projects-grid { grid-template-columns: 1fr; }
  .project-card-featured { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════════════════════════════
   TESTIMONIALS
══════════════════════════════════════════════════════════════════════════ */
.testimonials {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: var(--color-surface);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.testimonial-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.testimonial-card:hover {
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.quote-icon { opacity: 0.7; }

.testimonial-card p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  flex: 1;
}

.testimonial-card footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

.testimonial-avatar { flex-shrink: 0; }
.avatar-initials {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: color-mix(in oklab, var(--color-primary) 20%, var(--color-surface));
  border: 2px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.testimonial-author strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}
.testimonial-author span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.linkedin-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}
.linkedin-cta p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ══════════════════════════════════════════════════════════════════════════
   CONTACT
══════════════════════════════════════════════════════════════════════════ */
.contact {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 50%, color-mix(in oklab, var(--color-primary) 4%, transparent), transparent);
  pointer-events: none;
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: start;
  position: relative;
}

.contact-left { display: flex; flex-direction: column; gap: var(--space-6); }
.contact-left .section-title { text-align: left; font-size: var(--text-2xl); }
.contact-left p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}
.contact-left p strong { color: var(--color-text); }

.contact-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.contact-highlight {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.contact-links { display: flex; gap: var(--space-4); flex-wrap: wrap; }

/* Form */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75em var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--color-text-faint); }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 15%, transparent);
}

.form-success {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-success);
  background: color-mix(in oklab, var(--color-success) 8%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-success) 20%, transparent);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  .contact-inner { grid-template-columns: 1fr; }
  .contact-left .section-title { font-size: var(--text-xl); }
}

/* ══════════════════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════════════════ */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.footer-brand strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-base);
}
.footer-brand span {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.footer-nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.footer-nav a:hover { color: var(--color-primary); }
.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: none;
}

@media (max-width: 600px) {
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* ══════════════════════════════════════════════════════════════════════════
   AGENTIC PIONEER SECTION
══════════════════════════════════════════════════════════════════════════ */
.agentic-pioneer {
  padding-block: var(--space-24);
  background: var(--color-surface);
  position: relative;
  overflow: hidden;
}

.agentic-pioneer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, color-mix(in srgb, var(--color-primary) 6%, transparent), transparent);
  pointer-events: none;
}

.pioneer-intro {
  max-width: 720px;
  margin: 0 auto var(--space-12);
  text-align: center;
}

.pioneer-intro p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.pioneer-intro p:last-child { margin-bottom: 0; }

.pioneer-systems {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 900px) {
  .pioneer-systems { grid-template-columns: 1fr; }
}

.pioneer-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}

.pioneer-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.pioneer-card-now {
  border-color: color-mix(in srgb, var(--color-primary) 40%, transparent);
  background: color-mix(in srgb, var(--color-primary) 4%, var(--color-surface-2));
}

.pioneer-card-year {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.pioneer-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.pioneer-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.pioneer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.pioneer-tags span {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);
}