:root {
  --bg: #0a0e1a;
  --bg-alt: #111827;
  --bg-card: rgba(30, 41, 59, 0.8);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --text-light: #e2e8f0;
  --accent: #6366f1;
  --accent-strong: #818cf8;
  --accent-soft: rgba(99, 102, 241, 0.15);
  --accent-glow: rgba(99, 102, 241, 0.35);
  --card: rgba(30, 41, 59, 0.85);
  --border: #334155;
  --border-hover: #475569;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.5);
  --mono: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  --gradient-hero: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(168, 85, 247, 0.08) 100%);
  --nav-bg: rgba(10, 14, 26, 0.85);
}

* {
  box-sizing: border-box;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-strong);
  color: #fff;
  padding: 8px 16px;
  z-index: 100;
  transition: top 0.2s ease;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--sans);
  color: var(--text);
  background-color: var(--bg);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Modern animated background with gradient blobs */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 25%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 75%, rgba(168, 85, 247, 0.18) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.1) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
  animation: bg-pulse 15s ease-in-out infinite;
}

@keyframes bg-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

/* Animated gradient mesh */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background:
    conic-gradient(from 0deg at 50% 50%,
      rgba(99, 102, 241, 0.03) 0deg,
      rgba(168, 85, 247, 0.03) 90deg,
      rgba(236, 72, 153, 0.03) 180deg,
      rgba(99, 102, 241, 0.03) 270deg,
      rgba(99, 102, 241, 0.03) 360deg
    );
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
  animation: gradient-rotate 20s linear infinite;
}

@keyframes gradient-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Floating orbs for depth */
body .orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
  animation: orb-float 20s ease-in-out infinite;
}

body .orb-1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25), transparent 70%);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

body .orb-2 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.2), transparent 70%);
  bottom: 20%;
  right: 10%;
  animation-delay: -5s;
}

body .orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.15), transparent 70%);
  top: 50%;
  right: 30%;
  animation-delay: -10s;
}

@keyframes orb-float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(30px, -30px) scale(1.05);
  }
  50% {
    transform: translate(-20px, 20px) scale(0.95);
  }
  75% {
    transform: translate(-30px, -20px) scale(1.02);
  }
}

/* Subtle grid overlay */
.grid-overlay {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.page,
main,
header,
footer,
section {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

a:focus {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

p {
  line-height: 1.6;
  margin: 0 0 12px;
}

.container {
  width: min(1100px, 90vw);
  margin: 0 auto;
}

.site-header {
  padding: 70px 0 20px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: start;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-strong);
  margin: 0 0 16px;
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  box-shadow: 0 4px 12px var(--accent-glow);
}

h1 {
  font-size: clamp(2.4rem, 3vw, 3.4rem);
  margin: 0 0 16px;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 16px;
}

.btn {
  border-radius: 999px;
  padding: 10px 20px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn.primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: 0 12px 24px var(--accent-glow);
  border: none;
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px var(--accent-glow);
  filter: brightness(1.1);
}

.btn:focus {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.btn.ghost {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-light);
}

.btn.ghost:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.contact-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.hero-panel {
  display: grid;
  gap: 16px;
}

.hero-panel .panel-card {
  background: var(--gradient-card);
}

.panel-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 20px;
  align-items: start;
}

.panel-block + .panel-block {
  border-left: 1px dashed var(--border);
  padding-left: 20px;
}

.panel-card {
  background: var(--card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.panel-title {
  font-family: var(--mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-strong);
  margin-bottom: 12px;
}

.panel-title::before {
  content: "→ ";
  color: var(--accent);
}

.panel-list {
  margin: 0;
  padding-left: 0;
  color: var(--text-muted);
  list-style: none;
}

.panel-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
}

.panel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.metrics {
  display: grid;
  gap: 12px;
}

.metrics-grid {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.metric {
  display: grid;
  gap: 6px;
  font-family: var(--sans);
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--accent-soft);
  min-width: 0;
}

.metric-value {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent-strong);
  white-space: normal;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  word-break: normal;
  overflow-wrap: break-word;
  line-height: 1.3;
}

.section {
  padding: 60px 0;
}

main .section:first-of-type {
  padding-top: 40px;
}

.section.alt {
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}

.section-header h2 {
  font-size: 2rem;
  margin: 0;
}

.section-subtitle {
  color: var(--text-muted);
  margin: 0;
}

.subsection-title {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.impact-card {
  background: var(--card);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.impact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px var(--accent-glow);
  border-color: var(--accent);
}

.impact-title {
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline {
  display: grid;
  gap: 22px;
}

.timeline-item {
  position: relative;
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px 20px 20px 26px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.timeline-item:hover {
  border-color: var(--accent);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-hero);
  border-radius: 18px 0 0 18px;
}

.timeline-role {
  font-weight: 600;
  font-size: 1.1rem;
}

.timeline-meta {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 6px 0 12px;
}

.timeline-item ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-muted);
}

.timeline-item li {
  margin-bottom: 6px;
}

.leadership-card {
  background: var(--card);
  border-radius: 18px;
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: 0 12px 30px rgba(11, 18, 32, 0.06);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.leadership-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-soft), transparent);
  pointer-events: none;
}

.leadership-card h3 {
  margin-top: 0;
}

.leadership-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-muted);
}

.projects-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.projects-featured {
  margin-bottom: 30px;
}

.input-group {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.input-group input,
.input-group select {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  font-family: var(--sans);
  min-width: 180px;
}

.input-group input:focus,
.input-group select:focus {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.project-cover {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-alt);
}

.project-cover img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
}

.featured-grid .project-card {
  border: 1px solid var(--accent);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.08) 100%);
  box-shadow: 0 18px 40px var(--accent-glow);
}

.featured-grid .project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 50px var(--accent-glow);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px var(--accent-glow);
  border-color: var(--accent);
}

.project-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
}

.project-title h3 {
  margin: 0;
  font-size: 1.05rem;
  flex: 1 1 70%;
  min-width: 0;
  overflow-wrap: anywhere;
}

.project-title .chip {
  margin-left: auto;
  flex: 0 0 auto;
}

.project-desc {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.chip {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.8rem;
  font-family: var(--mono);
  border: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}

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

.chip.ai-assisted {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.25) 0%, rgba(168, 85, 247, 0.2) 100%);
  color: #f9a8d4;
  border-color: rgba(236, 72, 153, 0.4);
  box-shadow: 0 0 12px rgba(236, 72, 153, 0.3);
}

.project-links {
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
  margin-top: auto;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.case-card {
  background: var(--card);
  backdrop-filter: blur(10px);
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: grid;
  gap: 16px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px var(--accent-glow);
  border-color: var(--accent);
}

.case-cover img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.case-body {
  padding: 0 18px 18px;
}

.case-body h3 {
  margin: 0 0 8px;
}

.case-body ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-muted);
}

.case-body p {
  margin-bottom: 10px;
  color: var(--text-muted);
}

.case-body strong {
  color: var(--text);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--card);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 18px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px var(--accent-glow);
  border-color: var(--accent);
}

.skill-card h3 {
  margin-top: 0;
}

.education-card {
  background: var(--card);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: var(--shadow);
}

.contact-card {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 1px solid var(--border);
  padding: 24px;
  box-shadow: var(--shadow);
}

.contact-card h2 {
  margin: 0 0 8px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer {
  padding: 30px 0 60px;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}

.muted {
  color: var(--text-muted);
}

/* Loading spinner */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Error message */
.error-message {
  background: rgba(220, 38, 38, 0.1);
  border: 1px solid rgba(220, 38, 38, 0.3);
  border-radius: 12px;
  padding: 16px;
  color: #991b1b;
  margin: 16px 0;
}

.error-message .btn {
  margin-top: 12px;
}

/* Retry button */
.btn.retry {
  background: var(--text);
  color: #fff;
}

.btn.retry:hover {
  background: var(--text-muted);
}

.hero-text,
.hero-panel {
  animation: rise 0.8s ease both;
}

.hero-panel {
  animation-delay: 0.1s;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


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

  .hero-panel {
    grid-template-columns: 1fr;
  }

  .panel-split {
    grid-template-columns: 1fr;
  }

  .panel-block + .panel-block {
    border-left: none;
    border-top: 1px dashed var(--border);
    padding-left: 0;
    padding-top: 16px;
  }

  .contact-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 50px 0;
  }

  .cta-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .input-group input,
  .input-group select {
    min-width: 100%;
  }

  .projects-controls {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after,
  body .orb {
    animation: none;
  }
}

/* ── Sticky navigation bar ────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.nav-inner {
  width: min(1100px, 90vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  gap: 8px;
}

.nav-brand {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-strong);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-brand span {
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  display: block;
  padding: 6px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--accent-soft);
}

.nav-links a.active {
  color: var(--accent-strong);
}

@media (max-width: 640px) {
  .nav-brand {
    display: none;
  }

  .nav-links {
    gap: 0;
  }

  .nav-links a {
    padding: 6px 8px;
    font-size: 0.78rem;
  }
}

/* ── Scroll-reveal animations ─────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.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; }

/* ── Skill chips ──────────────────────────────────────────── */
.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.skill-chips .tech-chip {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.8rem;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid rgba(99, 102, 241, 0.25);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.skill-chips .tech-chip:hover {
  background: rgba(99, 102, 241, 0.25);
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* ── Section header accent line ──────────────────────────── */
.section-header h2 {
  font-size: 2rem;
  margin: 0;
  display: inline-flex;
  flex-direction: column;
}

.section-header h2::after {
  content: "";
  display: block;
  height: 3px;
  width: 48px;
  margin-top: 8px;
  background: var(--gradient-hero);
  border-radius: 999px;
}

/* ── Contact-list icons ───────────────────────────────────── */
.contact-list .cl-icon {
  margin-right: 5px;
  opacity: 0.75;
  font-style: normal;
}

/* ── Footer improvements ─────────────────────────────────── */
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent-strong);
}

/* ── Education card spacing ──────────────────────────────── */
.education-card + .education-card {
  margin-top: 16px;
}