/* ============================================================
   AHMED FARUK ONUŞ — PERSONAL WEBSITE
   Design System & Global Styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Core Colors */
  --color-bg:         #08080f;
  --color-bg-2:       #0d0d1a;
  --color-surface:    #12121f;
  --color-surface-2:  #1a1a2e;
  --color-border:     rgba(255, 255, 255, 0.07);
  --color-border-2:   rgba(255, 255, 255, 0.12);

  /* Accent Colors */
  --color-accent:     #7C6FFF;
  --color-accent-glow: rgba(124, 111, 255, 0.3);
  --color-accent-2:   #FF6B35;
  --color-accent-2-glow: rgba(255, 107, 53, 0.3);
  --color-lime:       #C8FF00;
  --color-lime-glow:  rgba(200, 255, 0, 0.25);
  --color-cyan:       #00D4FF;
  --color-cyan-glow:  rgba(0, 212, 255, 0.25);

  /* Text Colors */
  --color-text:       #E8E8F2;
  --color-text-muted: #6B6B90;
  --color-text-faint: #3a3a55;

  /* Semantic Colors */
  --color-success:    #00FF88;
  --color-warning:    #FFB800;
  --color-error:      #FF4444;

  /* Typography */
  --font-display:     'Space Grotesk', sans-serif;
  --font-body:        'Inter', sans-serif;
  --font-mono:        'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs:   0.25rem;
  --space-sm:   0.5rem;
  --space-md:   1rem;
  --space-lg:   1.5rem;
  --space-xl:   2rem;
  --space-2xl:  3rem;
  --space-3xl:  4rem;
  --space-4xl:  6rem;
  --space-5xl:  8rem;

  /* Border Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0.05, 0.35, 0.95);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
  --duration-slow: 0.75s;
  --duration-slower: 1.2s;

  /* Layout */
  --container-max: 1280px;
  --nav-height: 72px;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:  0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:  0 24px 64px rgba(0,0,0,0.6);
  --shadow-accent: 0 0 40px var(--color-accent-glow);
  --shadow-lime: 0 0 40px var(--color-lime-glow);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--color-surface-2) transparent;
}

body::-webkit-scrollbar { width: 4px; }
body::-webkit-scrollbar-track { background: transparent; }
body::-webkit-scrollbar-thumb { background: var(--color-surface-2); border-radius: var(--radius-full); }

::selection {
  background: var(--color-accent);
  color: white;
}

a {
  color: inherit;
  text-decoration: none;
}

img, video {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.font-display { font-family: var(--font-display); }
.font-mono    { font-family: var(--font-mono); }

.text-hero {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 9rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.text-display {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
}

.text-heading {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.text-subheading {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.text-body { font-size: 1rem; line-height: 1.7; }
.text-sm   { font-size: 0.875rem; }
.text-xs   { font-size: 0.75rem; }
.text-mono { font-family: var(--font-mono); font-size: 0.875rem; }

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-gradient-lime {
  background: linear-gradient(135deg, var(--color-lime), var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-accent { color: var(--color-accent); }
.text-lime   { color: var(--color-lime); }
.text-muted  { color: var(--color-text-muted); }

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

.section {
  padding: var(--space-5xl) 0;
}

.section-sm {
  padding: var(--space-3xl) 0;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ============================================================
   CUSTOM CURSOR
   ============================================================ */
.cursor {
  position: fixed;
  pointer-events: none;
  z-index: 99999;
  mix-blend-mode: difference;
}

.cursor-dot {
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: transform var(--duration-fast) var(--ease-out);
}

.cursor-ring {
  width: 40px;
  height: 40px;
  border: 1.5px solid rgba(255,255,255,0.5);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: 
    width var(--duration-normal) var(--ease-out),
    height var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out);
}

.cursor-ring.hovering {
  width: 64px;
  height: 64px;
  border-color: var(--color-accent);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--duration-normal) var(--ease-out),
              backdrop-filter var(--duration-normal) var(--ease-out);
}

.nav.scrolled {
  background: rgba(8, 8, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.7; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 3px;
}

.lang-btn {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  transition: all var(--duration-fast) var(--ease-out);
}

.lang-btn.active {
  background: var(--color-accent);
  color: white;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  cursor: pointer;
}

.nav-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu .nav-link {
  font-size: 2rem;
  font-family: var(--font-display);
  font-weight: 700;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn-primary {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 0 0 0 var(--color-accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--color-accent-glow);
}

.btn-outline {
  border: 1px solid var(--color-border-2);
  color: var(--color-text);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(124, 111, 255, 0.08);
}

.btn-lime {
  background: var(--color-lime);
  color: #08080f;
}

.btn-lime:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--color-lime-glow);
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border-2);
  color: var(--color-text-muted);
  transition: all var(--duration-normal) var(--ease-out);
}

.btn-icon:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   TAGS / BADGES
   ============================================================ */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
}

.tag-accent { border-color: var(--color-accent); color: var(--color-accent); background: rgba(124,111,255,0.1); }
.tag-lime   { border-color: var(--color-lime); color: var(--color-lime); background: rgba(200,255,0,0.1); }
.tag-orange { border-color: var(--color-accent-2); color: var(--color-accent-2); background: rgba(255,107,53,0.1); }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,111,255,0.05), transparent);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.card:hover {
  border-color: var(--color-border-2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before { opacity: 1; }

/* ============================================================
   SECTION LABELS
   ============================================================ */
.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-accent);
}

/* ============================================================
   DIVIDER
   ============================================================ */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
}

.divider-gradient {
  background: linear-gradient(90deg, transparent, var(--color-border-2), transparent);
}

/* ============================================================
   GLOW ORBS (background decorations)
   ============================================================ */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.orb-accent { background: radial-gradient(circle, rgba(124,111,255,0.3), transparent 70%); }
.orb-lime   { background: radial-gradient(circle, rgba(200,255,0,0.2), transparent 70%); }
.orb-orange { background: radial-gradient(circle, rgba(255,107,53,0.2), transparent 70%); }
.orb-cyan   { background: radial-gradient(circle, rgba(0,212,255,0.2), transparent 70%); }

/* ============================================================
   SCROLLBAR & PROGRESS
   ============================================================ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-lime));
  z-index: 9999;
  transform-origin: left;
  transform: scaleX(0);
}

/* ============================================================
   PAGE TRANSITION OVERLAY
   ============================================================ */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 9998;
  transform: scaleY(0);
  transform-origin: bottom;
}

/* ============================================================
   NOISE TEXTURE OVERLAY
   ============================================================ */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.025;
  pointer-events: none;
  z-index: 9997;
}

/* ============================================================
   REVEAL ANIMATIONS (JS-driven)
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }
[data-reveal-delay="4"] { transition-delay: 0.4s; }
[data-reveal-delay="5"] { transition-delay: 0.5s; }
[data-reveal-delay="6"] { transition-delay: 0.6s; }

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee-wrapper {
  overflow: hidden;
  position: relative;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee-left 25s linear infinite;
}

.marquee-track-reverse {
  animation: marquee-right 25s linear infinite;
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  padding: 0 var(--space-xl);
  white-space: nowrap;
}

@keyframes marquee-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes marquee-right {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}

.marquee-wrapper:hover .marquee-track { animation-play-state: paused; }

/* ============================================================
   WIDGET DASHBOARD (top bar)
   ============================================================ */
.widget-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
  position: relative;
  z-index: 999;
}

.widget-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.widget {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.widget-icon {
  font-size: 1rem;
}

.widget strong {
  color: var(--color-text);
  font-weight: 500;
}

.widget-divider {
  width: 1px;
  height: 20px;
  background: var(--color-border);
}

/* ============================================================
   SKILLS GRID
   ============================================================ */
.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.skill-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--skill-color, var(--color-accent));
  transform: scaleX(0);
  transition: transform var(--duration-normal) var(--ease-out);
}

.skill-card:hover {
  border-color: var(--skill-color, var(--color-accent));
  transform: translateY(-6px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}

.skill-card:hover::after { transform: scaleX(1); }

.skill-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  transition: transform var(--duration-normal) var(--ease-spring);
}

.skill-card:hover .skill-icon { transform: scale(1.2) rotate(-5deg); }

.skill-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
}

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============================================================
   PROJECT CARDS
   ============================================================ */
.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px var(--color-accent-glow);
}

.project-visit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: auto;
  padding: 10px 18px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-muted);
  transition: background var(--duration-fast), border-color var(--duration-fast), color var(--duration-fast), box-shadow var(--duration-fast);
}

.project-card--cozy:hover {
  border-color: rgba(232, 168, 124, 0.55);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 36px rgba(232, 168, 124, 0.2);
}

.project-card--cozy .project-link-hover-cozy:hover,
.project-visit-btn--cozy:hover {
  border-color: #e8a87c;
  background: rgba(232, 168, 124, 0.18);
  color: #f5d4b8;
  box-shadow: 0 0 24px rgba(232, 168, 124, 0.25);
}

.project-card--diabetes:hover {
  border-color: rgba(0, 212, 255, 0.45);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 36px rgba(0, 212, 255, 0.15);
}

.project-card--diabetes .project-link-hover-diabetes:hover,
.project-visit-btn--diabetes:hover {
  border-color: var(--color-cyan);
  background: rgba(0, 212, 255, 0.12);
  color: #b8f0ff;
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.2);
}

/* ============================================================
   PROFILE PHOTOS (About / Who)
   ============================================================ */
.profile-photos {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.profile-photo-card {
  margin: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border-2);
  box-shadow: var(--shadow-lg);
  background: var(--color-surface);
}

.profile-photo-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-photo-card--main {
  width: min(100%, 340px);
  aspect-ratio: 4 / 5;
  z-index: 2;
}

.profile-photo-card--alt {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(58%, 200px);
  aspect-ratio: 4 / 5;
  z-index: 3;
  border-color: rgba(124, 111, 255, 0.35);
  transform: rotate(3deg);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55);
}

@media (max-width: 768px) {
  .profile-photos {
    min-height: 360px;
    margin-top: var(--space-xl);
  }

  .profile-photo-card--main {
    width: 72%;
  }

  .profile-photo-card--alt {
    width: 48%;
  }
}

.about-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-3xl);
}

@media (max-width: 768px) {
  .about-stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.project-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-faint);
}

.project-links {
  display: flex;
  gap: var(--space-sm);
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* ============================================================
   PASSION SECTION (F1 + Photography)
   ============================================================ */
.passion-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 70vh;
}

.passion-panel {
  position: relative;
  overflow: hidden;
  padding: var(--space-3xl);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  transition: flex var(--duration-slow) var(--ease-out);
}

.passion-panel:hover {
  flex: 1.3;
}

.passion-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform var(--duration-slower) var(--ease-out);
  filter: brightness(0.5);
}

.passion-panel:hover .passion-bg {
  transform: scale(1.05);
  filter: brightness(0.6);
}

.passion-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 60%);
}

.passion-content {
  position: relative;
  z-index: 1;
}

.passion-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  transition: transform var(--duration-normal) var(--ease-spring);
}

.passion-panel:hover .passion-icon { transform: scale(1.2); }

.passion-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.passion-text {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.7);
  max-width: 360px;
  line-height: 1.6;
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--duration-normal) var(--ease-out);
}

.passion-panel:hover .passion-text {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.social-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(124,111,255,0.1);
  transform: translateY(-3px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr 1fr; }

  .passion-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }

  .passion-panel:hover { flex: 1; }

  .footer-top { flex-direction: column; }
  .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }

  .widget-bar-inner { justify-content: center; }

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

@media (max-width: 480px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .text-hero { font-size: clamp(2.5rem, 15vw, 4rem); }
}