/* ===========================
   CSS Custom Properties
   =========================== */
:root {
  --bg: #0a0a14;
  --bg-alt: #0f0f1e;
  --bg-card: #111128;
  --bg-card-hover: #161630;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(79, 156, 255, 0.35);

  --text-primary: #e8e8f0;
  --text-secondary: #8888aa;
  --text-muted: #555570;

  --accent: #4f9cff;
  --accent-dim: rgba(79, 156, 255, 0.15);
  --accent-hover: #6faeff;
  --gold: #c9a227;
  --gold-dim: rgba(201, 162, 39, 0.12);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;

  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.6);

  --nav-h: 64px;
  --transition: 0.22s ease;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

[data-theme="light"] {
  --bg: #f5f5fa;
  --bg-alt: #ededf5;
  --bg-card: #ffffff;
  --bg-card-hover: #f8f8ff;
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(79, 156, 255, 0.4);

  --text-primary: #111120;
  --text-secondary: #555570;
  --text-muted: #9999bb;

  --accent: #2563eb;
  --accent-dim: rgba(37, 99, 235, 0.1);
  --accent-hover: #1d4ed8;
  --gold: #a07b10;
  --gold-dim: rgba(160, 123, 16, 0.1);

  --shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.14);
}

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

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.65;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

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

/* ===========================
   Layout
   =========================== */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--alt {
  background: var(--bg-alt);
}

/* ===========================
   Navigation
   =========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: transparent;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  background: rgba(10, 10, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(245, 245, 250, 0.85);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav__logo {
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--accent);
  font-family: var(--font-mono);
}

.nav__links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.nav__cta {
  background: var(--accent-dim);
  color: var(--accent) !important;
  padding: 7px 18px;
  border-radius: 99px;
  border: 1px solid var(--border-hover);
  transition: background var(--transition), border-color var(--transition) !important;
}

.nav__cta:hover {
  background: var(--accent) !important;
  color: #fff !important;
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 1rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.theme-toggle:hover {
  border-color: var(--accent);
  transform: rotate(15deg);
}

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

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.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 nav */
@media (max-width: 768px) {
  .nav__hamburger { display: flex; }
  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    gap: 0;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow);
  }
  .nav__links.open {
    transform: translateY(0);
  }
  .nav__links li {
    width: 100%;
  }
  .nav__links a {
    display: block;
    padding: 14px 24px;
    font-size: 1rem;
  }
  .nav__cta {
    margin: 8px 24px;
    display: inline-block;
    border-radius: 8px;
  }
}

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

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79, 156, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 156, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(79, 156, 255, 0.08) 0%, transparent 70%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-top: 48px;
  padding-bottom: 96px;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--gold);
  background: var(--gold-dim);
  border: 1px solid rgba(201, 162, 39, 0.25);
  border-radius: 99px;
  padding: 6px 16px;
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}

.hero__tag::before {
  content: '';
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero__name {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.accent { color: var(--accent); }

.hero__title {
  font-family: var(--font-mono);
  font-size: clamp(0.875rem, 2vw, 1.05rem);
  color: var(--text-secondary);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero__tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.5;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero__chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.chip {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 5px 14px;
}

.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 1;
  opacity: 0.5;
}

.hero__scroll span {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 156, 255, 0.35);
}

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

.btn--outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn--ghost {
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
}

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

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ===========================
   Section Headers
   =========================== */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.65;
}

.section-header {
  margin-bottom: 56px;
}

/* ===========================
   About
   =========================== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 64px;
  align-items: center;
}

.about__text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.75;
}

.about__text p strong {
  color: var(--text-primary);
}

.about__text .section-label { margin-bottom: 12px; }
.about__text .section-title { margin-bottom: 24px; }

.about__stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat__number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 4px;
}

.stat__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.about__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
}

.about__card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.about__avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.avatar-placeholder {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.about__card-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.about__card-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.about__card-links {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.icon-link {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.icon-link:hover {
  background: var(--accent-dim);
  border-color: var(--border-hover);
  color: var(--accent);
  transform: translateY(-2px);
}

@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about__visual { order: -1; }
  .about__card {
    max-width: 320px;
    margin: 0 auto;
  }
}

/* ===========================
   Projects
   =========================== */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.project-card--featured::before { opacity: 1; }
.project-card--business::before {
  background: linear-gradient(90deg, var(--gold), var(--accent));
}

.project-card__badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--border-hover);
  border-radius: 99px;
  padding: 4px 12px;
  display: inline-block;
  margin-bottom: 20px;
}

.project-card__badge--biz {
  color: var(--gold);
  background: var(--gold-dim);
  border-color: rgba(201, 162, 39, 0.25);
}

.project-card__header {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.project-card__icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.project-card__meta h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.project-card__client {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  font-family: var(--font-mono);
}

.project-card__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.project-card__highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
}

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

.highlight-item strong {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
  font-weight: 600;
}

.highlight-item span {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 0.78rem;
  font-weight: 500;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px 10px;
  transition: all var(--transition);
}

.project-card:hover .tag {
  border-color: rgba(79, 156, 255, 0.2);
  color: var(--text-primary);
}

.project-card__github {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  transition: all var(--transition);
}

.project-card__github:hover {
  color: var(--accent);
  border-color: var(--border-hover);
  background: var(--accent-dim);
  transform: translateY(-1px);
}

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

/* ===========================
   Skills
   =========================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

.skill-group:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.skill-group__icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.skill-group__title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skill-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.skill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.skill-dot--high { background: var(--accent); }
.skill-dot--mid { background: var(--gold); }
.skill-dot--low { background: var(--text-muted); }

.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 8px 12px;
  background: var(--gold-dim);
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 500;
}

.skill-legend {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.skill-legend span {
  display: flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 960px) {
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .skills__grid { grid-template-columns: 1fr; }
}

/* ===========================
   Timeline (Experience)
   =========================== */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline__item {
  position: relative;
  margin-bottom: 48px;
}

.timeline__item:last-child { margin-bottom: 0; }

.timeline__marker {
  position: absolute;
  left: -32px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  transition: background var(--transition);
  z-index: 1;
}

.timeline__item:hover .timeline__marker {
  background: var(--accent);
}

.timeline__content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

.timeline__item:hover .timeline__content {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.timeline__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: 12px;
}

.timeline__header h3 {
  font-size: 1.05rem;
  font-weight: 700;
}

.timeline__org {
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 600;
  font-family: var(--font-mono);
}

.timeline__date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
  font-family: var(--font-mono);
}

.timeline__content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.timeline__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===========================
   Education
   =========================== */
.edu__card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  align-items: start;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.edu__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--accent), var(--gold));
}

.edu__logo {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--accent), #1d4ed8);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.edu__info h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.edu__school {
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.edu__degree {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.edu__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.edu__badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 99px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.edu__badge--gpa {
  background: var(--accent-dim);
  border-color: var(--border-hover);
  color: var(--accent);
}

.edu__badge--coop {
  background: var(--gold-dim);
  border-color: rgba(201, 162, 39, 0.25);
  color: var(--gold);
}

.edu__highlights {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.edu__highlight {
  display: flex;
  gap: 12px;
  font-size: 0.9rem;
}

.edu__highlight strong {
  color: var(--text-primary);
  min-width: 90px;
  font-weight: 600;
  flex-shrink: 0;
}

.edu__highlight span {
  color: var(--text-secondary);
  line-height: 1.5;
}

@media (max-width: 640px) {
  .edu__card {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ===========================
   Impact
   =========================== */
.impact__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.impact__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

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

.impact__icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.impact__card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

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

.impact__pillars {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
}

.impact__pillars h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 24px;
}

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

.pillar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 28px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  min-width: 140px;
}

.pillar:hover {
  border-color: var(--border-hover);
  background: var(--accent-dim);
}

.pillar__icon { font-size: 1.8rem; }

.pillar span:last-child {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

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

/* ===========================
   Contact
   =========================== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.contact__item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact__item:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
  background: var(--bg-card-hover);
}

.contact__item-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact__item-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact__item-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact__item-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.contact__resume {
  margin-bottom: 16px;
  width: 100%;
  justify-content: center;
}

.contact__note {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Form */
.contact__form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.93rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form__note {
  font-size: 0.85rem;
  text-align: center;
  min-height: 1.2em;
  transition: color 0.2s;
}

.form-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 4px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .contact__grid { grid-template-columns: 1fr; }
}

/* ===========================
   Footer
   =========================== */
.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.footer__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer__links {
  display: flex;
  gap: 20px;
}

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

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

.footer__credit {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ===========================
   Scroll Reveal Animation
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

/* Stagger children in a container */
.reveal:nth-child(2) { transition-delay: 0.07s; }
.reveal:nth-child(3) { transition-delay: 0.14s; }
.reveal:nth-child(4) { transition-delay: 0.21s; }
.reveal:nth-child(5) { transition-delay: 0.28s; }
.reveal:nth-child(6) { transition-delay: 0.35s; }

/* ===========================
   1st Place Badge & Poster
   =========================== */
.project-card__top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.first-place-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(201,162,39,0.18), rgba(255,200,50,0.08));
  border: 1px solid rgba(201,162,39,0.4);
  border-radius: 99px;
  padding: 7px 16px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.3;
}

.first-place-badge__trophy {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.poster-preview {
  position: relative;
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  margin: 20px 0;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  aspect-ratio: 3/2;
}

.poster-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
  transition: transform 0.4s ease;
}

.poster-preview:hover img {
  transform: scale(1.02);
}

.poster-preview__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 20, 0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #fff;
  opacity: 0;
  transition: opacity 0.25s ease;
  backdrop-filter: blur(2px);
}

.poster-preview:hover .poster-preview__overlay {
  opacity: 1;
}

.poster-preview__overlay span {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(5, 5, 14, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  backdrop-filter: blur(8px);
}

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

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  cursor: pointer;
  z-index: 1001;
}

.lightbox__close:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox__inner {
  max-width: min(1200px, 95vw);
  max-height: 85vh;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.8);
}

.lightbox__inner img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.lightbox__caption {
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--gold);
  font-weight: 600;
  text-align: center;
}

/* ===========================
   Education (multi-card)
   =========================== */
.edu__cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ===========================
   AFS Event Blocks
   =========================== */
.afs-event {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 40px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 24px;
  transition: border-color var(--transition);
}

.afs-event:hover {
  border-color: var(--border-hover);
}

.afs-event--reverse {
  grid-template-columns: 1fr 360px;
}

.afs-event--reverse .afs-event__photo {
  order: 2;
}

.afs-event--reverse .afs-event__text {
  order: 1;
}

.afs-event__photo {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.afs-event__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.afs-event:hover .afs-event__photo img {
  transform: scale(1.03);
}

.afs-event__badge {
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--gold);
  background: var(--gold-dim);
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: 99px;
  padding: 4px 14px;
  display: inline-block;
  margin-bottom: 12px;
}

.afs-event__text h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.afs-event__location {
  font-size: 0.85rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 500;
  margin-bottom: 16px;
}

.afs-event__text p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 16px;
}

.afs-event__highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.afs-event__highlights li {
  display: flex;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.afs-event__highlights li::before {
  content: '→';
  color: var(--accent);
  flex-shrink: 0;
  font-weight: 600;
}

@media (max-width: 900px) {
  .afs-event,
  .afs-event--reverse {
    grid-template-columns: 1fr;
  }
  .afs-event--reverse .afs-event__photo { order: 0; }
  .afs-event--reverse .afs-event__text { order: 0; }
}

/* ===========================
   Impact Other Grid
   =========================== */
.impact__other {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
}

.impact__other-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 20px;
}

.impact__other-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.impact__other-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.impact__other-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}

.impact__other-item div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.impact__other-item strong {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.impact__other-item span {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

@media (max-width: 640px) {
  .impact__other-grid { grid-template-columns: 1fr; }
}

/* ===========================
   Utility
   =========================== */
@media (max-width: 480px) {
  .section { padding: 64px 0; }
  .hero__actions { flex-direction: column; }
  .about__stats { gap: 20px; }
  .edu__card { padding: 28px 20px; }
  .timeline { padding-left: 24px; }
  .timeline__marker { left: -24px; }
  .pillars__grid { gap: 10px; }
  .pillar { min-width: 110px; padding: 16px 18px; }
}