:root {
  --bg: #0a1020;
  --bg-soft: #10182d;
  --panel: rgba(17, 24, 39, 0.82);
  --panel-strong: #121a2f;
  --border: rgba(148, 163, 184, 0.18);
  --text: #edf2ff;
  --muted: #aab8d8;
  --accent: #60a5fa;
  --accent-2: #2dd4bf;
  --accent-3: #8b5cf6;
  --success: #34d399;
  --warning: #fbbf24;
  --shadow: 0 18px 48px rgba(2, 6, 23, 0.35);
  --radius: 18px;
  --radius-sm: 12px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(96, 165, 250, 0.16), transparent 0 28%),
    radial-gradient(circle at right top, rgba(45, 212, 191, 0.12), transparent 0 24%),
    linear-gradient(180deg, #08101f 0%, #0b1326 45%, #0a1020 100%);
  line-height: 1.6;
}

a {
  color: inherit;
}

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

.container-shell {
  width: min(var(--max-width), calc(100% - 1.5rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: rgba(8, 16, 31, 0.82);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.22), rgba(45, 212, 191, 0.18));
  border: 1px solid rgba(96, 165, 250, 0.35);
  display: grid;
  place-items: center;
  color: var(--accent);
  font-weight: 800;
}

.brand-copy strong {
  display: block;
  font-size: 0.96rem;
  letter-spacing: 0.01em;
}

.brand-copy span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  padding: 0.5rem 0.7rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  transition: 180ms ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(96, 165, 250, 0.12);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section {
  padding: 4.5rem 0;
}

.hero {
  padding: 0.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.5rem;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.info-card,
.experience-card,
.project-card,
.skill-card,
.credential-card,
.contact-card,
.proof-card,
.note-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 1rem 2rem 2rem;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(96, 165, 250, 0.12);
  color: #cfe2ff;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
  margin: 1rem 0 0.85rem;
}

.hero-lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.4rem 0 1rem;
}

.button-primary,
.button-secondary,
.button-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.15rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), #3b82f6);
  color: white;
}

.button-secondary {
  background: rgba(45, 212, 191, 0.12);
  border: 1px solid rgba(45, 212, 191, 0.28);
  color: #d9fffb;
}

.button-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.button-primary:hover,
.button-secondary:hover,
.button-ghost:hover {
  transform: translateY(-1px);
  color: inherit;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.hero-point {
  padding: 0.9rem;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: var(--radius-sm);
}

.hero-point strong {
  display: block;
  font-size: 0.95rem;
}

.hero-point span {
  display: block;
  color: var(--muted);
  font-size: 0.87rem;
}

.hero-panel {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.profile-shot {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.16);
}

.panel-block {
  padding: 1rem;
  border-radius: 14px;
  background: rgba(8, 16, 31, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.panel-block h3,
.panel-block h4 {
  margin: 0 0 0.45rem;
}

.pill-row,
.role-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill,
.tag {
  border-radius: 999px;
  padding: 0.38rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  background: rgba(96, 165, 250, 0.12);
  color: #d6e8ff;
  border: 1px solid rgba(96, 165, 250, 0.18);
}

.pill.success {
  background: rgba(52, 211, 153, 0.1);
  border-color: rgba(52, 211, 153, 0.25);
  color: #ddfff4;
}

.pill.warning {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.24);
  color: #fff3cc;
}

.quick-proof {
  padding: 0 0 0.5rem;
}

.proof-grid,
.info-grid,
.experience-grid,
.project-grid,
.skills-grid,
.credentials-grid,
.contact-grid,
.proof-grid-cards,
.visual-proof-grid {
  display: grid;
  gap: 1rem;
}

.proof-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.info-grid,
.skills-grid,
.credentials-grid,
.proof-grid-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.experience-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.single-project-grid {
  grid-template-columns: 1fr;
}

.contact-grid {
  grid-template-columns: 1.05fr 0.95fr;
}

.visual-proof-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.info-card,
.experience-card,
.project-card,
.skill-card,
.credential-card,
.contact-card,
.proof-card,
.note-card,
.visual-card {
  padding: 1.2rem;
}

.visual-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.visual-card figcaption {
  margin-top: 0.9rem;
}

.visual-card-wide {
  grid-column: 1 / -1;
}

.diagram-image {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  background: #08101f;
}

.screen-placeholder {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.12);
  background: #0b1326;
}

.screen-placeholder-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.75rem 0.9rem;
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  color: #dce7ff;
  font-size: 0.9rem;
}

.screen-placeholder-bar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(96, 165, 250, 0.7);
}

.screen-placeholder-body {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  padding: 0.9rem;
}

.screen-tile {
  min-height: 132px;
  padding: 0.9rem;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(18, 33, 58, 0.95), rgba(12, 22, 42, 0.95));
  border: 1px solid rgba(96, 165, 250, 0.14);
}

.screen-tile h4 {
  margin: 0 0 0.4rem;
  font-size: 0.98rem;
}

.screen-tile p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.proof-stat {
  padding: 1rem;
  text-align: center;
}

.proof-stat strong {
  display: block;
  font-size: 1rem;
}

.proof-stat span {
  color: var(--muted);
  font-size: 0.87rem;
}

.section-heading {
  margin-bottom: 1.25rem;
}

.section-heading h2 {
  font-size: clamp(1.5rem, 2vw, 2.2rem);
  margin: 0 0 0.45rem;
}

.section-heading p {
  color: var(--muted);
  max-width: 70ch;
  margin: 0;
}

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

.meta-line {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.7rem;
}

.experience-card h3,
.project-card h3,
.skill-card h3,
.credential-card h3,
.contact-card h3,
.proof-card h3,
.info-card h3 {
  margin: 0 0 0.45rem;
}

.card-summary {
  color: #dce7ff;
  font-weight: 600;
}

.clean-list {
  margin: 0.7rem 0 0;
  padding-left: 1rem;
  color: var(--muted);
}

.clean-list li + li {
  margin-top: 0.4rem;
}

.meta-block {
  margin-top: 0.9rem;
}

.meta-block strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.88rem;
  color: #dce7ff;
}

.meta-block span,
.meta-block p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

.project-card {
  position: relative;
}

.note-card {
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.09), rgba(139, 92, 246, 0.08));
}

.note-card strong {
  color: white;
}

.contact-card.primary {
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.12), rgba(45, 212, 191, 0.1));
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 0;
}

.contact-list li + li {
  margin-top: 0.55rem;
}

.text-link {
  color: #dceaff;
  text-decoration: none;
}

.text-link:hover {
  color: white;
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.12);
  padding: 1.2rem 0 2rem;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 480ms cubic-bezier(0.22, 1, 0.36, 1),
              transform 480ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

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

@media (max-width: 992px) {
  .nav-toggle {
    display: inline-flex;
  }

  .header-cta {
    display: none;
  }

  .nav-links {
    position: absolute;
    left: 0.75rem;
    right: 0.75rem;
    top: 74px;
    padding: 0.8rem;
    border-radius: 14px;
    background: rgba(8, 16, 31, 0.98);
    border: 1px solid var(--border);
    display: none;
    flex-direction: column;
    align-items: stretch;
  }

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

  .hero-grid,
  .proof-grid,
  .info-grid,
  .experience-grid,
  .project-grid,
  .skills-grid,
  .credentials-grid,
  .contact-grid,
  .proof-grid-cards,
  .visual-proof-grid {
    grid-template-columns: 1fr;
  }

  .screen-placeholder-body {
    grid-template-columns: 1fr;
  }

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

  .section {
    padding: 3.5rem 0;
  }
}

@media (max-width: 640px) {
  .hero-copy,
  .hero-panel,
  .info-card,
  .experience-card,
  .project-card,
  .skill-card,
  .credential-card,
  .contact-card,
  .proof-card,
  .note-card {
    padding: 1rem;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .button-primary,
  .button-secondary,
  .button-ghost {
    width: 100%;
  }
}