:root {
  color-scheme: dark;
  --bg: #0d1117;
  --bg-muted: #161b22;
  --bg-card: #1f242d;
  --text: #f0f6fc;
  --text-muted: #9da7b3;
  --accent: #7ee787;
  --accent-strong: #2ea043;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
  --radius: 20px;
  --container: 1120px;
  --section-gap: clamp(64px, 10vw, 120px);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

.page {
  overflow-x: hidden;
}

.container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.section {
  padding: var(--section-gap) 0;
  position: relative;
  overflow: hidden;
}

.section[class*="illustration-section-"] {
  position: relative;
}

[class*="illustration-section-"]::after {
  content: "";
  position: absolute;
  width: 100%;
  max-width: 100%;
  height: 612px;
  background-repeat: no-repeat;
  background-size: auto;
  background-position: center;
  left: 50%;
  top: 0;
  transform: translate(-50%);
  pointer-events: none;
  z-index: 0;
}

.illustration-section-01::after {
  background-image: url("../images/illustration-section-011.svg");
  transform: translateX(0);
}

.illustration-section-03::after {
  background-image: url("../images/illustration-section-03.svg");
}

.illustration-section-04::after {
  background-image: url("../images/illustration-section-04.svg");
}

.illustration-section-05::after {
  background-image: url("../images/illustration-section-05.svg");
  transform: translateX(0);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-header {
  max-width: 680px;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: clamp(2rem, 3vw, 3rem);
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.bio-text {
  max-width: 820px;
  color: var(--text-muted);
  font-size: 1.02rem;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(18px);
  background: rgba(13, 17, 23, 0.8);
  border-bottom: 1px solid var(--border);
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--text-muted);
}

.primary-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.button.primary {
  background: rgba(126, 231, 135, 0.12);
  border-color: rgba(126, 231, 135, 0.45);
  color: var(--text);
}

.button.ghost {
  border-color: transparent;
  color: var(--text-muted);
}

.button:hover {
  border-color: rgba(126, 231, 135, 0.5);
  color: var(--text);
  background: rgba(126, 231, 135, 0.16);
}

.hero {
  padding-top: clamp(80px, 14vw, 140px);
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: center;
}

.hero-grid,
.hero-logos,
.section-header,
.feature-grid,
.project-grid,
.skills-grid,
.impact-grid,
.contact-inner,
.footer-inner {
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: clamp(2.8rem, 5vw, 4.6rem);
  line-height: 1.05;
  margin-bottom: 20px;
}

.hero-content .lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-metadata {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-metadata a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(126, 231, 135, 0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.hero-metadata a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  padding: 48px;
}

.hero-graphic {
  width: min(420px, 90%);
  filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.6));
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  transition: opacity 1s ease, transform 1s ease;
}

.hero-visual.is-visible .hero-graphic {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.hero-out .hero-graphic {
  opacity: 0;
  transform: translateY(-24px) scale(0.98);
}

.hero-glow {
  position: absolute;
  inset: 18%;
  background: radial-gradient(circle, rgba(126, 231, 135, 0.25), transparent 60%);
  filter: blur(40px);
  z-index: -1;
  opacity: 0.8;
}

.hero-logos {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  justify-content: center;
  opacity: 0.75;
}

.hero-logos img {
  max-height: 40px;
  width: auto;
  filter: grayscale(1);
}

.feature-grid,
.project-grid,
.skills-grid,
.impact-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.skills-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.skill-card {
  padding: 32px;
}
.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.feature-card,
.project-card,
.skill-card,
.impact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.feature-card h3,
.project-card h3,
.skill-card h3,
.impact-card h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.project-card {
  display: grid;
  gap: 18px;
  padding: 32px;
}

.project-media {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0b1118;
  aspect-ratio: 16 / 9;
}

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

.project-card h3 {
  font-size: 1.35rem;
}

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

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

.tag-group span {
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.text-link {
  color: var(--accent);
  font-weight: 600;
}

.contact {
  background: var(--bg-muted);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.contact-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
  justify-content: space-between;
}

.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.side-rail {
  position: fixed;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 18px;
  z-index: 15;
}

.side-rail::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.side-rail a {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.side-rail a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  transform: translateY(-50%);
}

.side-rail a.active {
  color: var(--text);
}

.side-rail a.active::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(126, 231, 135, 0.5);
}

.contact-dialog {
  border: none;
  border-radius: 24px;
  padding: 0;
  width: min(520px, 92vw);
  background: #0b1118;
  color: var(--text);
  box-shadow: var(--shadow);
  inset: 0;
  margin: auto;
}

.contact-dialog::backdrop {
  background: rgba(10, 12, 16, 0.75);
  backdrop-filter: blur(4px);
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 28px;
}

.contact-form h3 {
  font-size: 1.4rem;
}

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

.contact-form label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-form textarea,
.contact-form input {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #0f141c;
  color: var(--text);
  padding: 12px 14px;
  font-size: 0.95rem;
}

.contact-form textarea:focus,
.contact-form input:focus {
  outline: none;
  border-color: rgba(126, 231, 135, 0.6);
  box-shadow: 0 0 0 3px rgba(126, 231, 135, 0.18);
}

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

.contact-status {
  min-height: 1.2em;
  font-size: 0.9rem;
  color: var(--accent);
}

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

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (max-width: 900px) {
  .primary-nav {
    display: none;
  }

  .side-rail {
    display: none;
  }

  .project-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero {
    padding-top: clamp(56px, 16vw, 120px);
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-visual {
    order: -1;
    padding: 16px 0;
  }

  .hero-graphic {
    width: min(320px, 78vw);
  }

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

  .section-header {
    margin-bottom: 32px;
  }

  .skills-grid,
  .impact-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 700px) {
  .hero-visual {
    padding: 24px 0;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}