/* ============================================================
   ADAM ROJÍK — PERSONAL WEBSITE
   Design System & Styles
   ============================================================ */

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

/* ---------- Custom Properties ---------- */
:root {
  /* Colors */
  --bg-primary: #070b14;
  --bg-secondary: #0d1224;
  --bg-card: rgba(15, 23, 52, 0.6);
  --bg-glass: rgba(15, 23, 52, 0.45);
  --border-glass: rgba(99, 130, 255, 0.12);
  --border-glass-hover: rgba(99, 130, 255, 0.3);

  --text-primary: #e8ecf4;
  --text-secondary: #8892a8;
  --text-muted: #5a6478;

  --accent-blue: #6382ff;
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --accent-cyan: #22d3ee;
  --accent-green: #34d399;
  --accent-orange: #f59e0b;

  --gradient-main: linear-gradient(135deg, #6382ff 0%, #a855f7 50%, #ec4899 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(99, 130, 255, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  --gradient-card-border: linear-gradient(135deg, rgba(99,130,255,0.25), rgba(168,85,247,0.1), rgba(236,72,153,0.25));

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --section-padding: clamp(4rem, 10vw, 8rem) clamp(1.25rem, 5vw, 4rem);
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-med: 0.4s var(--ease-out);
  --transition-slow: 0.7s var(--ease-out);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection {
  background: rgba(99, 130, 255, 0.3);
  color: #fff;
}

img { max-width: 100%; display: block; }
a { color: var(--accent-blue); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-purple); }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem clamp(1.25rem, 5vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition-med), box-shadow var(--transition-med), padding var(--transition-med);
}

.nav.scrolled {
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border-glass);
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.nav__logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav__links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  position: relative;
  padding-bottom: 2px;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
  transition: width var(--transition-med);
}

.nav__links a:hover { color: var(--text-primary); }
.nav__links a:hover::after { width: 100%; }

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav__hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero__particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--accent-blue);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 8s infinite;
}

@keyframes particleFloat {
  0% { opacity: 0; transform: translateY(0) scale(0); }
  10% { opacity: 0.6; transform: scale(1); }
  90% { opacity: 0.1; }
  100% { opacity: 0; transform: translateY(-100vh) scale(0.5); }
}

.hero__glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.hero__glow--1 {
  background: var(--accent-blue);
  top: -200px;
  left: -100px;
  animation: glowPulse 6s ease-in-out infinite;
}

.hero__glow--2 {
  background: var(--accent-purple);
  bottom: -200px;
  right: -100px;
  animation: glowPulse 6s ease-in-out infinite 3s;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.1; transform: scale(1); }
  50% { opacity: 0.2; transform: scale(1.1); }
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  animation: fadeInDown 0.8s var(--ease-out) both;
}

.hero__badge .dot {
  width: 7px;
  height: 7px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(52, 211, 153, 0); }
}

.hero__name {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s var(--ease-out) 0.15s both;
}

.hero__name .gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__rotating {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  height: 2.5em;
  overflow: hidden;
  animation: fadeInUp 0.8s var(--ease-out) 0.3s both;
}

.hero__rotating-inner {
  display: flex;
  flex-direction: column;
  animation: rotateWords 9s var(--ease-out) infinite;
}

.hero__rotating-word {
  height: 2.5em;
  display: flex;
  align-items: center;
  justify-content: center;
}

@keyframes rotateWords {
  0%, 28% { transform: translateY(0); }
  33%, 61% { transform: translateY(-2.5em); }
  66%, 94% { transform: translateY(-5em); }
  100% { transform: translateY(0); }
}

.hero__description {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
  animation: fadeInUp 0.8s var(--ease-out) 0.45s both;
}

.hero__cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out) 0.6s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 130, 255, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 8px 30px rgba(99, 130, 255, 0.45);
  color: #fff;
}

.btn--secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn--secondary:hover {
  border-color: var(--border-glass-hover);
  box-shadow: 0 4px 20px rgba(99, 130, 255, 0.1);
  color: var(--text-primary);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: fadeInUp 0.8s var(--ease-out) 0.9s both;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-blue), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; height: 40px; }
  50% { opacity: 0.3; height: 20px; }
}

/* ---------- Section Common ---------- */
section {
  padding: var(--section-padding);
}

.section__header {
  text-align: center;
  margin-bottom: 4rem;
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-blue);
  margin-bottom: 1rem;
}

.section__label::before,
.section__label::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent-blue);
  opacity: 0.4;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section__subtitle {
  color: var(--text-secondary);
  margin-top: 1rem;
  font-size: 1.05rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Journey Map Section ---------- */
.journey {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.journey::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
}

.journey__map-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(99, 130, 255, 0.3) transparent;
}

.journey__map-container::-webkit-scrollbar {
  height: 6px;
}
.journey__map-container::-webkit-scrollbar-track {
  background: transparent;
}
.journey__map-container::-webkit-scrollbar-thumb {
  background: rgba(99, 130, 255, 0.3);
  border-radius: 10px;
}

.journey__map-svg {
  width: 100%;
  height: auto;
  min-width: 800px;
  display: block;
}

.journey__dot {
  cursor: pointer;
}

.journey__dot:hover circle:last-of-type {
  filter: drop-shadow(0 0 8px currentColor);
}

.journey__dot-ring {
  animation: dotPulse 3s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { r: 12; opacity: 0.15; }
  50% { r: 18; opacity: 0.05; }
}

.journey__cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.journey__card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.journey__card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.journey__card-flag {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.journey__card-country {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.journey__card-role {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

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

/* ---------- Experience Timeline ---------- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple), var(--accent-pink), transparent);
  border-radius: 2px;
}

.timeline__item {
  position: relative;
  padding-left: 72px;
  padding-bottom: 3rem;
}

.timeline__dot {
  position: absolute;
  left: 20px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-blue);
  z-index: 2;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.timeline__item:hover .timeline__dot {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.2);
}

.timeline__company {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.2rem;
  margin-bottom: 0.15rem;
}

.timeline__role {
  color: var(--accent-blue);
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.timeline__meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.timeline__meta span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.timeline__desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.timeline__desc ul {
  list-style: none;
  padding: 0;
}

.timeline__desc li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.4rem;
}

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

/* ---------- Skills Section ---------- */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.skills__category {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.skills__category:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.skills__category-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.skills__category-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.skills__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  background: rgba(99, 130, 255, 0.08);
  border: 1px solid rgba(99, 130, 255, 0.15);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: default;
}

.skill-pill:hover {
  background: rgba(99, 130, 255, 0.15);
  border-color: rgba(99, 130, 255, 0.3);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.skill-pill--accent {
  background: rgba(168, 85, 247, 0.08);
  border-color: rgba(168, 85, 247, 0.15);
}

.skill-pill--accent:hover {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.3);
}

.skill-pill--warm {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.15);
}

.skill-pill--warm:hover {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
}

.skill-pill--green {
  background: rgba(52, 211, 153, 0.08);
  border-color: rgba(52, 211, 153, 0.15);
}

.skill-pill--green:hover {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.3);
}

/* ---------- Research & Awards ---------- */
.research__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.research-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.research-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.research-card__type {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-purple);
  margin-bottom: 1rem;
  padding: 0.3rem 0.7rem;
  background: rgba(168, 85, 247, 0.1);
  border-radius: 100px;
  width: fit-content;
}

.research-card__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.research-card__venue {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  font-style: italic;
}

.research-card__desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
  flex: 1;
}

.research-card__link {
  margin-top: 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.research-card__link:hover { gap: 0.6rem; }

/* Awards */
.awards__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.25rem;
  margin-top: 3rem;
}

.award-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.award-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.award-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.award-card__icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.award-card__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.award-card__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

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

/* ---------- What's Next Section ---------- */
.next {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.next::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
}

.next__content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.next__icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  animation: rocketBob 3s ease-in-out infinite;
}

@keyframes rocketBob {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50% { transform: translateY(-10px) rotate(5deg); }
}

.next__text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.next__text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.next__highlight {
  background: var(--gradient-subtle);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2.5rem;
  backdrop-filter: blur(10px);
}

.next__highlight-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.next__looking-for {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.next__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: rgba(99, 130, 255, 0.08);
  border: 1px solid rgba(99, 130, 255, 0.15);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ---------- Testimonial ---------- */
.testimonial {
  max-width: 650px;
  margin: 3rem auto 0;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  backdrop-filter: blur(10px);
}

.testimonial__quote {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 1.25rem;
}

.testimonial__quote::before {
  content: '"';
  font-family: var(--font-heading);
  font-size: 3rem;
  color: var(--accent-purple);
  opacity: 0.5;
  line-height: 0;
  vertical-align: -0.6em;
  margin-right: 0.2rem;
}

.testimonial__author {
  font-weight: 600;
  font-size: 0.85rem;
}

.testimonial__author-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- Footer ---------- */
.footer {
  padding: 3rem clamp(1.25rem, 5vw, 4rem) 2rem;
  border-top: 1px solid var(--border-glass);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  text-align: center;
}

.footer__links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer__links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.footer__links a:hover { color: var(--text-primary); }

.footer__copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---------- Utility Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  html {
    font-size: 17px;
  }
  
  .nav__links { display: none; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(7, 11, 20, 0.97);
    backdrop-filter: blur(20px);
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    z-index: 999;
  }
  .nav__links.open a {
    font-size: 1.5rem;
    color: var(--text-primary);
  }
  .nav__hamburger { display: flex; z-index: 1001; }
  .nav__hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
  .nav__hamburger.open span:nth-child(2) { opacity: 0; }
  .nav__hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .timeline::before { left: 16px; }
  .timeline__item { padding-left: 48px; }
  .timeline__dot { left: 8px; }

  .research__grid { grid-template-columns: 1fr; }
  .awards__grid { grid-template-columns: 1fr; }
  .journey__cards { grid-template-columns: 1fr 1fr; }

  .footer__inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .journey__cards { grid-template-columns: 1fr; }
  .skills__grid { grid-template-columns: 1fr; }
  .hero__cta-group { flex-direction: column; align-items: center; }
}

/* ---------- Languages Section ---------- */
.languages {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.language-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.language-item__flag {
  font-size: 2rem;
}

.language-item__name {
  font-weight: 600;
  font-size: 0.9rem;
}

.language-item__level {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------- Map Flight Paths ---------- */
.flight-path {
  stroke: var(--accent-blue);
  stroke-width: 1.5;
  stroke-dasharray: 6 4;
  fill: none;
  opacity: 0.3;
  animation: dashMove 20s linear infinite;
}

@keyframes dashMove {
  to { stroke-dashoffset: -200; }
}

/* ---------- Education sub-section ---------- */
.education__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.education-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
}

.education-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.education-card__school {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.education-card__degree {
  font-size: 0.82rem;
  color: var(--accent-blue);
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.education-card__period {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------- Contact Section ---------- */
.contact {
  background: var(--bg-primary);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  max-width: 750px;
  margin: 0 auto;
}

.contact__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 2rem 1.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.contact__card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.contact__card-icon {
  font-size: 2rem;
}

.contact__card-label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.contact__card-value {
  font-size: 0.82rem;
  color: var(--text-secondary);
  word-break: break-all;
  text-align: center;
}

@media (max-width: 480px) {
  .contact__grid { grid-template-columns: 1fr; }
}