:root {
  --bg: #020617;
  --bg-soft: #0f172a;
  --panel: rgba(15, 23, 42, 0.78);
  --panel-strong: rgba(15, 23, 42, 0.9);
  --text: #f3f4f6;
  --muted: #a1a1aa;
  --accent: #7c3aed;
  --accent-2: #06b6d4;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --radius: 22px;
  --radius-sm: 14px;
  --max-width: 1150px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(124, 58, 237, 0.1), transparent 26%),
    radial-gradient(circle at top right, rgba(6, 182, 212, 0.08), transparent 22%),
    linear-gradient(180deg, #050814 0%, #060b17 100%);
}

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

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

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
}

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(9, 9, 15, 0.72);
  border-bottom: 1px solid var(--border);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

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

.nav-links a {
  color: var(--muted);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  transition: 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.menu-btn {
  display: none;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-radius: 12px;
  padding: 0.7rem 0.9rem;
  cursor: pointer;
}

/* Layout / Sections */
.hero {
  padding: 6rem 0 3rem;
}

.section {
  padding: 2rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
  align-items: stretch;
}

.grid-2,
.grid-3,
.diagram-grid,
.resume-layout {
  display: grid;
  gap: 1.25rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.diagram-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 16px;
}

.resume-layout {
  grid-template-columns: 0.9fr 1.6fr;
}

.resume-sidebar,
.resume-main,
.timeline {
  display: grid;
  gap: 1.25rem;
}

.full-width,
.diagram-item.full-width {
  grid-column: 1 / -1;
}

/* Cards */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-card,
.panel {
  padding: 2rem;
}

.project-card,
.info-card,
.resume-block,
.project-access-card {
  padding: 1.4rem;
}

.info-card.background-card {
  border: 1px solid rgba(124, 58, 237, 0.4);
}

.timeline-item {
  padding: 1.25rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(255, 255, 255, 0.04);
}

/* Typography */
.eyebrow {
  color: var(--accent-2);
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
}

h1,
h2,
h3 {
  margin-top: 0;
  letter-spacing: -0.03em;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  line-height: 0.96;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin-bottom: 1rem;
}

h3 {
  margin-bottom: 0.75rem;
}

p {
  color: var(--muted);
  line-height: 1.7;
  margin-top: 0;
  margin-bottom: 1rem;
}

.project-card p:last-child,
.info-card p:last-child,
.resume-block p:last-child,
.project-access-header .muted:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: 1.05rem;
  max-width: 62ch;
}

.muted,
.nested-list {
  color: var(--muted);
}

.highlight-line {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: 500;
  color: var(--text);
}

/* Buttons */
.button-row,
.project-links,
.project-access-links {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.button-row {
  margin-top: 1.5rem;
}

.project-access-links {
  margin-top: 1.25rem;
}

.btn,
.project-link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  transition: 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary,
.project-link-btn.primary {
  background: linear-gradient(90deg, var(--accent), #5b21b6);
  color: white;
}

.btn-primary:hover,
.project-link-btn.primary:hover {
  transform: translateY(-1px);
}

.btn-secondary,
.project-link-btn.secondary {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.btn-secondary:hover,
.project-link-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-case-study {
  background: linear-gradient(90deg, var(--accent), #5b21b6);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-weight: 600;
  position: relative;
  overflow: hidden;
  box-shadow:
    0 0 0 rgba(124, 58, 237, 0),
    0 10px 25px rgba(91, 33, 182, 0.25);
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease,
    filter 0.22s ease;
}

.btn-case-study:hover {
  transform: translateY(-2px) scale(1.03);
  filter: brightness(1.1);
  box-shadow:
    0 0 18px rgba(124, 58, 237, 0.5),
    0 0 30px rgba(6, 182, 212, 0.2),
    0 14px 34px rgba(91, 33, 182, 0.3);
}

.btn-case-study:active {
  transform: translateY(0) scale(0.98);
}

.btn-case-study::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 35%,
    rgba(255, 255, 255, 0.25) 50%,
    rgba(255, 255, 255, 0.1) 65%,
    transparent 100%
  );
  transform: translateX(-140%);
  transition: transform 0.6s ease;
}

.btn-case-study:hover::after {
  transform: translateX(140%);
}

/* Pills / Lists */
.stat-list,
.tag-list,
.resume-list,
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.stat-list,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.stat-list li,
.tag-list li {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  padding: 0.65rem 0.9rem;
  color: var(--text);
}

.resume-list li {
  color: var(--text);
  line-height: 1.65;
}

.resume-list li + li {
  margin-top: 0.85rem;
}

.resume-block ul {
  margin-top: 10px;
}

.nested-list {
  margin-top: 6px;
  margin-left: 16px;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.contact-list span {
  font-size: 1.1rem;
}

.contact-list a {
  color: var(--text);
  transition: 0.2s;
}

.contact-list a:hover {
  color: var(--accent-2);
}

/* Media / Demo Blocks */
.terminal-demo,
.video-container {
  margin-top: 16px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #000;
}

.terminal-bar {
  display: flex;
  gap: 6px;
  padding: 8px;
  background: #111;
}

.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #444;
}

.terminal-demo img,
.video-container video {
  width: 100%;
}

.code-block {
  margin-top: 12px;
  padding: 14px;
  border-radius: 10px;
  background: #0b0f1a;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: monospace;
  font-size: 0.9rem;
  overflow-x: auto;
}

/* Footer */
.footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  text-align: center;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .grid-2,
  .grid-3,
  .diagram-grid,
  .resume-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .menu-btn {
    display: inline-flex;
  }

  .nav {
    align-items: flex-start;
    padding: 0.8rem 0;
  }

  .nav-wrap {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    border-radius: 14px;
  }

  .hero {
    padding-top: 4rem;
  }

  .hero-card,
  .panel {
    padding: 1.3rem;
  }
}

strong {
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.01em;
}