/* ============================================================
   DESIGN SYSTEM — CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Colors */
  --color-bg:           #080c14;
  --color-bg-2:         #0d1220;
  --color-bg-3:         #111827;
  --color-surface:      #131b2e;
  --color-surface-2:    #1a2540;
  --color-border:       rgba(255, 255, 255, 0.07);
  --color-border-hover: rgba(99, 179, 255, 0.25);

  --color-accent:       #3b82f6;
  --color-accent-2:     #6366f1;
  --color-accent-glow:  rgba(59, 130, 246, 0.15);
  --color-accent-dim:   rgba(59, 130, 246, 0.08);

  --color-text-primary:   #f0f4ff;
  --color-text-secondary: #94a3b8;
  --color-text-muted:     #64748b;
  --color-text-accent:    #93c5fd;

  --color-white:    #ffffff;
  --color-success:  #10b981;
  --color-warning:  #f59e0b;

  /* Typography */
  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;
  --font-serif:  'Playfair Display', Georgia, serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;
  --text-7xl:  4.5rem;

  --weight-light:    300;
  --weight-regular:  400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;
  --weight-extrabold:800;

  --leading-tight:  1.2;
  --leading-snug:   1.375;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  /* 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;

  /* Borders */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(59,130,246,0.12);

  /* Transitions */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast:   150ms;
  --duration-base:   250ms;
  --duration-slow:   400ms;
  --duration-xslow:  700ms;

  /* Layout */
  --container-max:  1200px;
  --container-wide: 1400px;
  --nav-height:     72px;
  --section-py:     var(--space-32);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: var(--leading-normal);
  -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; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--section-py) 0;
  position: relative;
}

.hidden { display: none !important; }

/* ============================================================
   TYPOGRAPHY UTILITIES
   ============================================================ */
.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  position: relative;
  padding-left: var(--space-5);
}
.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}
.section-title em {
  font-style: italic;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  line-height: var(--leading-loose);
}

.section-header {
  margin-bottom: var(--space-16);
  max-width: 700px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-md);
  transition: all var(--duration-base) var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.01em;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.45);
  filter: brightness(1.1);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn--outline:hover {
  background: var(--color-accent-dim);
  transform: translateY(-1px);
}

.btn--text {
  background: transparent;
  color: var(--color-accent);
  padding: var(--space-1) 0;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  border-radius: 0;
}
.btn--text:hover { color: var(--color-text-accent); letter-spacing: 0.02em; }

@keyframes caseStudyPulse {
  0%, 100% { color: var(--color-accent); text-shadow: none; }
  50% { color: #93c5fd; text-shadow: 0 0 12px rgba(59, 130, 246, 0.7); }
}
@keyframes caseStudyBounce {
  0%, 55%, 100% { transform: translateY(0); }
  20% { transform: translateY(-7px); }
  35% { transform: translateY(0); }
  45% { transform: translateY(-3px); }
}
.case-study-trigger {
  animation: caseStudyPulse 2.4s ease-in-out infinite, caseStudyBounce 3.5s ease-in-out infinite;
}
.case-study-trigger:hover {
  animation: none;
  color: var(--color-text-accent);
}

.btn--full { width: 100%; justify-content: center; padding: var(--space-4) var(--space-6); }

/* ============================================================
   TECH / SKILL TAGS
   ============================================================ */
.tech-tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-text-accent);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
}

.pill {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  background: var(--color-surface-2);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--duration-base) var(--ease-out);
}
.pill:hover {
  border-color: var(--color-accent);
  color: var(--color-text-accent);
  background: var(--color-accent-dim);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.7; transform: scale(0.9); }
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 0.7; }
}

.fade-up {
  opacity: 0;
  animation: fadeUp var(--duration-xslow) var(--ease-out) forwards;
}
.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }
.delay-5 { animation-delay: 0.75s; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-xslow) var(--ease-out),
              transform var(--duration-xslow) var(--ease-out);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1.revealed { transition-delay: 0.1s; }
.reveal.delay-2.revealed { transition-delay: 0.2s; }
.reveal.delay-3.revealed { transition-delay: 0.3s; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  transition: background var(--duration-base) var(--ease-in-out),
              box-shadow var(--duration-base) var(--ease-in-out),
              backdrop-filter var(--duration-base);
}
.nav.scrolled {
  background: rgba(8, 12, 20, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav__inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-8);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  padding: var(--space-2) var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--duration-base) var(--ease-out);
}
.nav__logo:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}
.nav__link:hover { color: var(--color-text-primary); }
.nav__link.active { color: var(--color-text-primary); }
.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.nav__link--cta {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: var(--color-white) !important;
  padding: var(--space-2) var(--space-5);
  margin-left: var(--space-2);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}
.nav__link--cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
  filter: brightness(1.1);
}
.nav__link--cta::after { display: none !important; }

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--duration-base) var(--ease-out);
}
.nav__hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero__video-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

.hero__video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(8, 12, 20, 0.35) 0%,
    rgba(8, 12, 20, 0.25) 50%,
    rgba(8, 12, 20, 0.55) 100%
  );
  z-index: 1;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  animation: glowPulse 6s ease-in-out infinite;
  pointer-events: none;
  z-index: 2;
}
.hero__glow--1 {
  width: 600px;
  height: 600px;
  background: rgba(59, 130, 246, 0.12);
  top: -100px;
  right: -150px;
  animation-delay: 0s;
}
.hero__glow--2 {
  width: 400px;
  height: 400px;
  background: rgba(99, 102, 241, 0.1);
  bottom: 50px;
  left: -100px;
  animation-delay: 3s;
}

.hero__inner {
  position: relative;
  z-index: 3;
  padding: var(--space-24) var(--space-6);
  max-width: 900px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: #6ee7b7;
  margin-bottom: var(--space-8);
  letter-spacing: 0.02em;
}
.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

.hero__name {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-5xl), 8vw, var(--text-7xl));
  font-weight: var(--weight-extrabold);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.hero__title {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: var(--weight-medium);
  color: var(--color-text-accent);
  margin-bottom: var(--space-6);
  letter-spacing: 0.01em;
}

.hero__subtitle {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--color-text-secondary);
  max-width: 680px;
  line-height: var(--leading-loose);
  margin-bottom: var(--space-10);
}
.hero__subtitle .highlight {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

.hero__ctas {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: nowrap;
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: fit-content;
  max-width: 100%;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-align: center;
}
.stat__number {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: 1;
}
.stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}
.stat__divider {
  width: 1px;
  height: 32px;
  background: var(--color-border);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-10);
  left: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1.5px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  border-radius: var(--radius-full);
  animation: scrollLine 2s ease-in-out infinite;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-2) 100%);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-20);
  align-items: start;
}

.about__lead {
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-5);
  font-weight: var(--weight-medium);
}
.about__body {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-5);
}
.about__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.about__highlight-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.about__highlight-item strong { color: var(--color-text-primary); }
.highlight-icon { font-size: var(--text-base); flex-shrink: 0; margin-top: 1px; }

.about__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-8);
}

.about__photo-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  margin-bottom: var(--space-6);
}
.about__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius-xl);
  display: block;
}

.about__photo-placeholder {
  width: 100%;
  height: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  font-weight: var(--weight-medium);
  overflow: hidden;
}
.about__photo-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about__photo-accent {
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-xl) + 2px);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2), transparent 60%);
  z-index: -1;
  opacity: 0.5;
}

.about__expertise-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================================
   EXPERIENCE / TIMELINE
   ============================================================ */
.experience {
  background: var(--color-bg-2);
}

.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: 12px;
  width: 1.5px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-2), transparent);
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-8);
}
.timeline__item:last-child { margin-bottom: 0; }

.timeline__marker {
  position: absolute;
  left: -28px;
  top: 20px;
  width: 14px;
  height: 14px;
  background: var(--color-bg-2);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  z-index: 1;
  transition: all var(--duration-base) var(--ease-out);
}
.timeline__item:hover .timeline__marker {
  background: var(--color-accent);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.5);
}

.timeline__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-base) var(--ease-out);
}
.timeline__card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateX(4px);
}

.timeline__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
  gap: var(--space-4);
  flex-wrap: wrap;
}
.timeline__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.timeline__company {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.timeline__period {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
}
.timeline__tag {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  white-space: nowrap;
}

.timeline__role {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}
.timeline__summary {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
  line-height: var(--leading-loose);
}
.timeline__achievements {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.timeline__achievements li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding-left: var(--space-5);
  position: relative;
  line-height: var(--leading-loose);
}
.timeline__achievements li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
}
.timeline__achievements li strong { color: var(--color-text-primary); }

.timeline__card-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-6);
  align-items: start;
}

.timeline__media {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.timeline__media-video {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-bg-2);
  box-shadow: var(--shadow-lg);
}

.timeline__media-video video {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg);
}

.timeline__media-caption {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  line-height: var(--leading-loose);
}

.timeline__media-img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.timeline__media-img img {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

@media (max-width: 1024px) {
  .timeline__card-layout {
    grid-template-columns: 1fr;
  }
  .timeline__media {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .timeline__media-video,
  .timeline__media-img {
    flex: 1 1 240px;
  }
}

.timeline__programs {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-5);
}
.timeline__program-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid var(--color-border);
}
.timeline__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects {
  background: var(--color-bg);
}

.projects__tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
  width: fit-content;
}

.tab-btn {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  border-radius: calc(var(--radius-lg) - 2px);
  transition: all var(--duration-base) var(--ease-out);
}
.tab-btn:hover { color: var(--color-text-primary); }
.tab-btn--active {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

.project-card {
  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);
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.project-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  transform: translateY(-4px);
}
.project-card:hover::before { opacity: 1; }

.project-card--featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
}

.project-card__preview {
  width: calc(100% + var(--space-8) * 2);
  margin: calc(-1 * var(--space-8)) calc(-1 * var(--space-8)) var(--space-6);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
  aspect-ratio: 16 / 7;
  background: var(--color-bg-2);
  position: relative;
}

.video-mute-btn {
  position: absolute;
  bottom: var(--space-3);
  right: var(--space-3);
  z-index: 10;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(8, 12, 20, 0.65);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: background var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}
.video-mute-btn:hover {
  background: rgba(59, 130, 246, 0.75);
  transform: scale(1.1);
}
.video-mute-btn svg {
  width: 16px;
  height: 16px;
  pointer-events: none;
}
.video-mute-btn .hidden { display: none; }
.project-card__preview img,
.project-card__preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-card__vision {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-4);
  margin-bottom: var(--space-4);
  font-style: italic;
}

.project-card__media-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.project-card__media-grid img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  display: block;
}

.project-card__screenshot-strip {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: thin;
  scrollbar-color: var(--color-surface-2) transparent;
  margin-bottom: var(--space-4);
}
.project-card__screenshot-strip img {
  flex: 0 0 auto;
  height: 120px;
  width: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  object-fit: cover;
  display: block;
}

.modal-media {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.modal-media__video,
.modal-media__img {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg-2);
}
.modal-media__video video,
.modal-media__img img {
  width: 100%;
  display: block;
  object-fit: cover;
}
.modal-media__video--hero {
  grid-column: 1 / -1;
  aspect-ratio: 16 / 9;
}
.modal-media__video--hero video { height: 100%; }

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.project-card__tags { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.project-card__year {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  white-space: nowrap;
}

.project-tag {
  display: inline-block;
  padding: 2px var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.06);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  letter-spacing: 0.04em;
}
.project-tag--ai {
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-text-accent);
  border-color: rgba(59, 130, 246, 0.25);
}
.project-tag--growth {
  background: rgba(16, 185, 129, 0.1);
  color: #6ee7b7;
  border-color: rgba(16, 185, 129, 0.2);
}

.project-card__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}
.project-card__company {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: var(--weight-medium);
  letter-spacing: 0.03em;
}
.project-card__summary {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  flex-grow: 1;
}

.project-card__metrics {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.metric__value {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: 1;
}
.metric__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  letter-spacing: 0.04em;
}

.project-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: auto;
}
.project-tags-row { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.project-card__links { display: flex; gap: var(--space-4); }

/* ============================================================
   CASE STUDY MODAL
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  max-width: 760px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px);
  transition: transform var(--duration-base) var(--ease-out);
}
.modal-overlay.open .modal { transform: translateY(0); }

.modal__close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-3);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-out);
}
.modal__close:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.modal__content h2 {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}
.modal__content .modal-company {
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-6);
}
.modal-section { margin-bottom: var(--space-6); }
.modal-section h3 {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.modal-section h3::before {
  content: '';
  display: block;
  width: 12px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}
.modal-section p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
}
.modal-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.modal-section ul li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding-left: var(--space-5);
  position: relative;
  line-height: var(--leading-loose);
}
.modal-section ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--weight-bold);
}
.modal-metrics {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-5);
  background: var(--color-bg-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills {
  background: var(--color-bg-2);
}
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--duration-base) var(--ease-out);
}
.skill-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.skill-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
  display: block;
}
.skill-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}
.skill-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-4);
}
.skill-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================================
   PHILOSOPHY
   ============================================================ */
.philosophy {
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}
.philosophy::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.philosophy__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.principle-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--duration-base) var(--ease-out);
  overflow: hidden;
}
.principle-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}
.principle-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.principle-card:hover::after { opacity: 1; }

.principle-card__number {
  font-family: var(--font-serif);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  color: rgba(59, 130, 246, 0.12);
  line-height: 1;
  margin-bottom: var(--space-4);
  transition: color var(--duration-base) var(--ease-out);
}
.principle-card:hover .principle-card__number {
  color: rgba(59, 130, 246, 0.22);
}
.principle-card__title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}
.principle-card__body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
}

/* ============================================================
   AI EXPERTISE
   ============================================================ */
.ai-expertise {
  background: linear-gradient(135deg, var(--color-bg-2) 0%, var(--color-bg-3) 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.ai-expertise__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  align-items: start;
}

.ai-expertise__body {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-6);
}
.ai-expertise__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.ai-expertise__list li {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  padding-left: var(--space-6);
  position: relative;
  line-height: var(--leading-loose);
}
.ai-expertise__list li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: var(--text-xs);
  top: 6px;
}

.ai-tools__heading {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}
.ai-tools__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
.ai-tool-badge {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-align: center;
  transition: all var(--duration-base) var(--ease-out);
  cursor: default;
}
.ai-tool-badge:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-accent);
  background: var(--color-accent-dim);
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials {
  background: var(--color-bg-2);
}
.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--duration-base) var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.testimonial-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.testimonial-card__quote {
  font-family: var(--font-serif);
  font-size: 5rem;
  color: var(--color-accent);
  line-height: 0.6;
  opacity: 0.4;
  user-select: none;
}
.testimonial-card--featured {
  grid-column: 1 / -1;
}
.testimonial-card__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  flex-grow: 1;
  font-style: italic;
}
.testimonial-card__text p + p {
  margin-top: var(--space-4);
}
.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  flex-shrink: 0;
  letter-spacing: 0.04em;
}
.testimonial-card__name {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
}
.testimonial-card__role {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.testimonials__footer {
  margin-top: var(--space-10);
  text-align: center;
}
.testimonials__linkedin-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.testimonials__linkedin-note a {
  color: var(--color-accent);
  font-weight: var(--weight-medium);
  transition: color var(--duration-fast);
}
.testimonials__linkedin-note a:hover { color: var(--color-text-accent); }

/* ============================================================
   SPEAKING & WRITING
   ============================================================ */
.speaking { background: var(--color-bg); }
.speaking__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}
.speaking-card {
  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-3);
  transition: all var(--duration-base) var(--ease-out);
}
.speaking-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.speaking-card__type {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
}
.speaking-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}
.speaking-card__venue {
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: var(--weight-medium);
  letter-spacing: 0.04em;
}
.speaking-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  flex-grow: 1;
}

/* ============================================================
   AWARDS
   ============================================================ */
.awards { background: var(--color-bg-2); }
.awards__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(240px, 360px));
  gap: var(--space-5);
  justify-content: center;
}
.award-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--duration-base) var(--ease-out);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}
.award-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.award-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-2);
}
.award-card__title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
}
.award-card__org {
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: var(--weight-medium);
  letter-spacing: 0.04em;
}
.award-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  bottom: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.contact__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  gap: var(--space-8);
}

.contact__body {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-8);
}
.contact__links {
  justify-content: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}
.contact-link:hover {
  color: var(--color-text-primary);
  background: var(--color-surface);
  border-color: var(--color-border);
}
.contact-link__icon { font-size: var(--text-lg); }

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-group label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}
.form-group input,
.form-group textarea {
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) var(--ease-out);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.form__note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  line-height: var(--leading-loose);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
  flex-wrap: wrap;
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}
.footer__tagline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  letter-spacing: 0.04em;
}

.footer__nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer__nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  transition: color var(--duration-fast) var(--ease-out);
}
.footer__nav a:hover { color: var(--color-text-primary); }

.footer__socials {
  display: flex;
  gap: var(--space-3);
}
.footer__socials a {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--duration-fast) var(--ease-out);
}
.footer__socials a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-5) 0;
}
.footer__bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer__bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ============================================================
   PARTICLE CANVAS
   ============================================================ */
#particleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }

/* ============================================================
   SELECTION
   ============================================================ */
::selection {
  background: rgba(59, 130, 246, 0.3);
  color: var(--color-text-primary);
}

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 1024px) {
  :root { --section-py: 5rem; }

  .about__grid { grid-template-columns: 1fr; gap: var(--space-12); }
  .about__visual { display: grid; grid-template-columns: 240px 1fr; gap: var(--space-8); align-items: start; }
  .about__photo-frame { aspect-ratio: 1; }

  .ai-expertise__inner { grid-template-columns: 1fr; gap: var(--space-12); }

  .contact__inner { grid-template-columns: 1fr; gap: var(--space-12); }

  .project-card--featured { grid-column: span 1; }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 768px) {
  :root { --section-py: 4rem; }

  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(8, 12, 20, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--space-8) var(--space-6);
    gap: var(--space-2);
    align-items: flex-start;
    z-index: 99;
    animation: fadeIn var(--duration-base) var(--ease-out);
  }
  .nav__links.open .nav__link {
    font-size: var(--text-xl);
    padding: var(--space-3) 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }
  .nav__links.open .nav__link--cta {
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-6);
    width: auto;
    align-self: flex-start;
  }

  .hero__stats {
    gap: var(--space-3);
    padding: var(--space-4) var(--space-4);
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: center;
  }
  .stat__divider { display: none; }

  .about__visual { grid-template-columns: 1fr; }
  .about__photo-frame { max-width: 240px; margin: 0 auto; }

  .timeline { padding-left: var(--space-6); }
  .timeline__header { flex-direction: column; gap: var(--space-2); }

  .projects__grid { grid-template-columns: 1fr; }
  .project-card--featured { grid-column: span 1; }

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

  .footer__inner { flex-direction: column; align-items: flex-start; gap: var(--space-6); }
  .footer__bottom .container { flex-direction: column; text-align: center; }

  .modal { padding: var(--space-6); }
}

@media (max-width: 480px) {
  .hero__name { font-size: clamp(2.5rem, 12vw, 3.75rem); }
  .hero__ctas { flex-direction: column; align-items: flex-start; }
  .hero__stats { width: 100%; justify-content: flex-start; }

  .nav__inner { padding: 0 var(--space-4); }
  .container { padding: 0 var(--space-4); }
}