:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --text: #1a1d29;
  --muted: #4c5166;
  --accent: #2d6cdf;
  --accent-2: #16a085;
  --border: rgba(26, 29, 41, 0.1);
  --shadow: 0 12px 30px rgba(30, 34, 60, 0.12);
  --shadow-soft: 0 8px 20px rgba(30, 34, 60, 0.08);
  --radius: 18px;
  --focus: #ffb347;
  --pattern: rgba(45, 108, 223, 0.08);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1219;
  --bg-elev: #171c26;
  --text: #eef1f7;
  --muted: #b7bdd1;
  --accent: #7aa2ff;
  --accent-2: #4ad9b5;
  --border: rgba(238, 241, 247, 0.12);
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 10px 20px rgba(0, 0, 0, 0.3);
  --focus: #ffcd7d;
  --pattern: rgba(122, 162, 255, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Arial, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image: radial-gradient(circle at 10% 20%, var(--pattern), transparent 50%),
    radial-gradient(circle at 90% 10%, rgba(22, 160, 133, 0.08), transparent 45%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.65), transparent 40%);
  min-height: 100vh;
  line-height: 1.6;
}

body.modal-open {
  overflow: hidden;
}

html[data-theme="dark"] body {
  background-image: radial-gradient(circle at 10% 20%, var(--pattern), transparent 50%),
    radial-gradient(circle at 90% 10%, rgba(74, 217, 181, 0.12), transparent 45%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 40%);
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  z-index: 1000;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

.container {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 0 clamp(20px, 6vw, 48px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(246, 247, 251, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

html[data-theme="dark"] .site-header {
  background: rgba(15, 18, 25, 0.86);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-text {
  display: none;
}

.nav {
  display: flex;
  gap: 18px;
  font-weight: 500;
  color: var(--muted);
}

.nav a {
  padding: 8px 0;
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}

.nav a:hover::after,
.nav a:focus-visible::after {
  width: 100%;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.theme-icon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, var(--accent));
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.8);
}

.hero {
  padding: clamp(64px, 12vw, 140px) 0 72px;
}

.hero-content {
  display: grid;
  gap: 20px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin: 0;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  max-width: 640px;
  margin: 0;
  color: var(--muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: var(--shadow);
}

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

.btn.small {
  padding: 10px 16px;
  font-size: 0.92rem;
}
.btn.project {
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
  box-shadow: var(--shadow-soft);
}

.btn.project:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}


.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.section {
  padding: 72px 0;
  scroll-margin-top: 96px;
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin: 0 0 12px;
}

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

.split {
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: start;
}

.about-card {
  background: var(--bg-elev);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.focus-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 32px;
}

.projects-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.project-card {
  background: var(--bg-elev);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  display: flex;             
  flex-direction: column;     
  gap: 16px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card-actions {
  margin-top: auto;          
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.project-card.featured {
  border-color: rgba(45, 108, 223, 0.35);
  box-shadow: var(--shadow);
}

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

.project-meta {
  font-size: 0.8rem;
  color: var(--muted);
  background: rgba(127, 133, 153, 0.12);
  padding: 4px 10px;
  border-radius: 999px;
}

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

.tag {
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(45, 108, 223, 0.12);
  color: var(--text);
}

.card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.projects-error {
  color: var(--muted);
  background: var(--bg-elev);
  border: 1px dashed var(--border);
  padding: 18px;
  border-radius: 14px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 36px;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
}

.footer-link {
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 50;
}

.modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 18, 0.6);
}

.modal-dialog {
  position: relative;
  width: min(640px, 92vw);
  background: var(--bg-elev);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px;
  z-index: 1;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.modal-content h3 {
  margin-top: 0;
}

.modal-content ul {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.modal-disclaimer {
  margin: 18px 0 0;
  font-size: 0.92rem;
  color: var(--muted);
}

@media (min-width: 720px) {
  .brand-text {
    display: inline;
  }
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }

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

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

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

html {
  scroll-behavior: smooth;
}