:root {
  --bg: #f3f7fb;
  --bg-elevated: rgba(255, 255, 255, 0.88);
  --panel: rgba(255, 255, 255, 0.94);
  --line: rgba(15, 23, 42, 0.1);
  --text: #102033;
  --muted: #5b6b80;
  --accent: #0f9f8c;
  --accent-strong: #1477e6;
  --button-text: #ffffff;
  --glow-a: rgba(20, 119, 230, 0.16);
  --glow-b: rgba(15, 159, 140, 0.14);
  --grid: rgba(16, 32, 51, 0.05);
  --terminal-bg: #0d1723;
  --terminal-top: rgba(255, 255, 255, 0.06);
  --terminal-text: #dce9fa;
  --terminal-muted: #8ca2bb;
  --shadow: 0 24px 80px rgba(26, 52, 86, 0.12);
}

body[data-theme="dark"] {
  --bg: #07111b;
  --bg-elevated: rgba(12, 23, 36, 0.82);
  --panel: rgba(8, 18, 29, 0.92);
  --line: rgba(148, 163, 184, 0.22);
  --text: #eef4ff;
  --muted: #9cb0c7;
  --accent: #6ee7b7;
  --accent-strong: #2dd4bf;
  --button-text: #04110d;
  --glow-a: rgba(45, 212, 191, 0.18);
  --glow-b: rgba(110, 231, 183, 0.18);
  --grid: rgba(255, 255, 255, 0.03);
  --terminal-bg: rgba(8, 18, 29, 0.96);
  --terminal-top: rgba(255, 255, 255, 0.04);
  --terminal-text: #d4e3f7;
  --terminal-muted: #86a0bc;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--glow-a), transparent 28%),
    radial-gradient(circle at bottom right, var(--glow-b), transparent 24%),
    linear-gradient(180deg, var(--bg) 0%, #eaf0f6 100%);
  transition: background 220ms ease, color 220ms ease;
}

body[data-theme="dark"] {
  background:
    radial-gradient(circle at top left, var(--glow-a), transparent 28%),
    radial-gradient(circle at bottom right, var(--glow-b), transparent 24%),
    linear-gradient(180deg, #08111c 0%, #04090f 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent);
}

.page-shell {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 4rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover,
.nav a:focus-visible,
.contact-links a:hover,
.contact-links a:focus-visible {
  color: var(--text);
}

.theme-toggle {
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.theme-toggle-track {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.35rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.theme-toggle-label {
  font-size: 0.85rem;
  color: var(--muted);
  min-width: 38px;
  text-align: center;
}

.theme-toggle-thumb {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 8px 18px rgba(20, 119, 230, 0.22);
}

body[data-theme="light"] .theme-light,
body[data-theme="dark"] .theme-dark {
  color: var(--text);
  font-weight: 700;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  padding: 4rem 0 2.5rem;
}

.hero-visuals {
  display: grid;
  gap: 1.2rem;
}

.eyebrow {
  margin: 0 0 0.8rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.hero h1,
.section-heading h2 {
  margin: 0;
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(3.4rem, 7vw, 6.4rem);
  max-width: 10ch;
}

.hero-text {
  max-width: 62ch;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--muted);
  margin: 1.5rem 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.8rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--button-text);
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  font-weight: 700;
}

.button.secondary {
  color: var(--text);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.terminal-card,
.portrait-card,
.skills-grid article,
.project-card,
.contact-card,
.timeline-item,
.stats article,
.about-grid p {
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}

.terminal-card {
  border-radius: 24px;
  overflow: hidden;
  background: var(--terminal-bg);
}

.portrait-card {
  position: relative;
  isolation: isolate;
  min-height: 380px;
  border-radius: 28px;
  padding: 1.25rem;
  overflow: hidden;
}

.portrait-backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 16% 22%, rgba(20, 119, 230, 0.18), transparent 30%),
    radial-gradient(circle at 80% 20%, rgba(15, 159, 140, 0.2), transparent 26%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.86), rgba(228, 238, 247, 0.72));
}

body[data-theme="dark"] .portrait-backdrop {
  background:
    radial-gradient(circle at 20% 20%, rgba(110, 231, 183, 0.36), transparent 30%),
    radial-gradient(circle at 80% 25%, rgba(45, 212, 191, 0.3), transparent 26%),
    radial-gradient(circle at 65% 80%, rgba(14, 165, 233, 0.24), transparent 34%),
    linear-gradient(160deg, rgba(6, 15, 24, 0.82), rgba(4, 10, 15, 0.98));
}

.portrait-backdrop::before,
.portrait-backdrop::after {
  content: "";
  position: absolute;
  border-radius: 999px;
}

.portrait-backdrop::before {
  width: 180px;
  height: 180px;
  right: -20px;
  top: -30px;
  border: 1px solid rgba(16, 32, 51, 0.08);
}

.portrait-backdrop::after {
  width: 220px;
  height: 220px;
  left: -40px;
  bottom: -60px;
  border: 1px solid rgba(20, 119, 230, 0.12);
}

body[data-theme="dark"] .portrait-backdrop::before {
  border-color: rgba(255, 255, 255, 0.08);
}

body[data-theme="dark"] .portrait-backdrop::after {
  border-color: rgba(110, 231, 183, 0.16);
}

.portrait-frame {
  position: relative;
  z-index: 1;
  margin: 1rem auto 0;
  width: min(100%, 340px);
  border-radius: 50%;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  border: 10px solid rgba(255, 255, 255, 0.78);
  box-shadow: 0 30px 70px rgba(26, 52, 86, 0.18);
}

body[data-theme="dark"] .portrait-frame {
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.4);
}

.portrait-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 24%, rgba(16, 32, 51, 0.18) 100%);
  pointer-events: none;
}

body[data-theme="dark"] .portrait-frame::after {
  background: linear-gradient(180deg, rgba(7, 17, 27, 0) 20%, rgba(7, 17, 27, 0.28) 100%);
}

.portrait-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 12%;
}

.portrait-badge {
  position: relative;
  z-index: 1;
  width: fit-content;
  max-width: 280px;
  margin: -1.5rem auto 0;
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(16, 32, 51, 0.08);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 45px rgba(26, 52, 86, 0.15);
}

body[data-theme="dark"] .portrait-badge {
  background: rgba(8, 18, 29, 0.84);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.3);
}

.portrait-badge span {
  display: block;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.6;
}

.terminal-bar {
  display: flex;
  gap: 0.5rem;
  padding: 1rem 1.1rem;
  background: var(--terminal-top);
}

.terminal-bar span {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.26);
}

.terminal-body {
  padding: 1.5rem;
  font-family: "IBM Plex Mono", monospace;
  color: var(--terminal-text);
}

.terminal-body p,
.terminal-body li {
  margin: 0 0 0.9rem;
  line-height: 1.7;
}

.terminal-body ul {
  margin: 0;
  padding-left: 1.2rem;
}

.prompt,
.success {
  color: var(--accent);
}

.identity {
  font-size: 1.15rem;
}

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

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.stats article {
  border-radius: 22px;
  padding: 1.4rem;
}

.stats strong {
  display: block;
  font-size: 1.8rem;
  margin-bottom: 0.6rem;
}

.stats span,
.skills-grid p,
.timeline-content p,
.timeline-content li,
.project-card p,
.project-card span,
.contact-card p,
.contact-links a,
.about-grid p {
  color: var(--muted);
  line-height: 1.7;
}

.section {
  padding: 5rem 0 0;
}

.section-heading {
  margin-bottom: 1.7rem;
}

.section-heading h2 {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  max-width: 13ch;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.about-grid p,
.skills-grid article,
.project-card,
.contact-card,
.timeline-item {
  border-radius: 24px;
  padding: 1.5rem;
}

.skills-grid,
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.skills-grid h3,
.project-card h3,
.timeline-meta h3 {
  margin: 0 0 0.7rem;
  font-size: 1.2rem;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.5rem;
  align-items: start;
}

.timeline-meta p,
.timeline-meta span {
  margin: 0.3rem 0 0;
  color: var(--muted);
}

.timeline-content ul {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
}

.project-card span {
  display: inline-block;
  margin-top: 1rem;
}

.contact-section {
  padding-bottom: 2rem;
}

.contact-card {
  display: grid;
  gap: 1rem;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
}

.contact-links a {
  text-decoration: none;
}

.is-visible {
  animation: rise 650ms ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .hero,
  .timeline-item,
  .about-grid,
  .stats,
  .skills-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .portrait-card {
    min-height: 340px;
  }

  .page-shell {
    width: min(100% - 1.25rem, 1160px);
  }

  .section-heading h2,
  .hero h1 {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .nav {
    gap: 0.75rem 1rem;
  }

  .theme-toggle-track {
    min-height: 44px;
  }

  .portrait-frame img {
    object-position: center 10%;
  }
}