/* Portfolio — GitHub Pages friendly, no build step */
:root {
  --font-sans: "DM Sans", system-ui, -apple-system, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;
  --space-xs: 0.35rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 80px rgba(15, 23, 42, 0.12);
  --transition: 0.2s ease;

  --bg: #f8fafc;
  --bg-elevated: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --accent: #0d9488;
  --accent-soft: rgba(13, 148, 136, 0.12);
  --gradient-start: #0f766e;
  --gradient-end: #4338ca;
}

[data-theme="dark"] {
  --bg: #0b1120;
  --bg-elevated: #111827;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #1e293b;
  --accent: #2dd4bf;
  --accent-soft: rgba(45, 212, 191, 0.15);
  --gradient-start: #14b8a6;
  --gradient-end: #818cf8;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 80px rgba(0, 0, 0, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  transition: background-color var(--transition), color var(--transition);
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: var(--space-sm) var(--space-md);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius);
}
.skip-link:focus {
  left: var(--space-md);
  top: var(--space-md);
}

.container {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
}

.container.narrow {
  width: min(720px, 100% - 2rem);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 4rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
}
.nav a:hover {
  color: var(--accent);
}

.theme-toggle {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color var(--transition), transform var(--transition);
}
.theme-toggle:hover {
  border-color: var(--accent);
}
.theme-toggle__icon::before {
  content: "☾";
  font-size: 1.1rem;
}
[data-theme="dark"] .theme-toggle__icon::before {
  content: "☀";
}

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

/* Hero */
.hero {
  padding: var(--space-xl) 0 calc(var(--space-xl) + 1rem);
  position: relative;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--space-sm);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 400;
  line-height: 1.1;
  margin: 0 0 var(--space-md);
  letter-spacing: -0.03em;
  background: linear-gradient(120deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lead {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 36ch;
  margin: 0 0 var(--space-lg);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.35rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 999px;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  box-shadow: 0 8px 28px rgba(13, 148, 136, 0.35);
}
[data-theme="dark"] .btn--primary {
  box-shadow: 0 8px 28px rgba(20, 184, 166, 0.25);
}
.btn--primary:hover {
  box-shadow: 0 12px 36px rgba(67, 56, 202, 0.35);
}

.btn--ghost {
  border-color: var(--border);
  color: var(--text);
  background: var(--bg-elevated);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.hero__links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9375rem;
}
.hero__links a:hover {
  color: var(--accent);
}

.hero__visual {
  min-height: 280px;
  position: relative;
}

.hero__orb {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  background: var(--bg-elevated);
}

.hero__portrait {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center 18%;
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

.section--about {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.section--repos {
  background: color-mix(in srgb, var(--bg-elevated) 50%, var(--bg));
}

.section--contact {
  padding-bottom: calc(var(--space-xl) * 1.5);
}

.section__head {
  margin-bottom: var(--space-lg);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.02em;
}

.section__subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 60ch;
}

.section__subtitle code {
  font-size: 0.85em;
  padding: 0.15em 0.4em;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

.section__subtitle a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.section__subtitle a:hover {
  text-decoration: underline;
}

.section--stack {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.tech-stack-root {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.tech-stack-group__title {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 var(--space-md);
}

.tech-stack-group__tiles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tech-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  min-width: 6.5rem;
  max-width: 9.5rem;
  padding: var(--space-md) var(--space-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.tech-tile:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.tech-tile--fallback .tech-tile__glyph {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--gradient-end) 15%, transparent));
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.tech-tile__icon-wrap {
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  /* Simple Icons SVGs as <img> often default to black fills — sit them on a light well */
  background: #f1f5f9;
  border-radius: 12px;
  flex-shrink: 0;
}

[data-theme="dark"] .tech-tile__icon-wrap {
  background: #e2e8f0;
}

.tech-tile__icon-wrap--emoji {
  font-size: 1.625rem;
  line-height: 1;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji", sans-serif;
}

/* Simple Icons as mask + site gradient (same as hero title) */
.tech-tile__icon-gradient {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  display: block;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-mask-image: var(--tech-icon);
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-image: var(--tech-icon);
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
}

.tech-tile__icon-gradient--failed {
  display: none !important;
}

.tech-tile__glyph.tech-tile__glyph--fallback[hidden] {
  display: none !important;
}

.tech-tile__glyph.tech-tile__glyph--fallback:not([hidden]) {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  z-index: 2;
  border-radius: 12px;
  background: var(--accent-soft);
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent);
}

.tech-tile__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.35;
  color: var(--text);
  hyphens: auto;
}

.prose p {
  margin: 0 0 var(--space-md);
  color: var(--text-muted);
}
.prose p:last-child {
  margin-bottom: 0;
}

/* Cards */
.card-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
}

.card__accent {
  font-size: 1.5rem;
  line-height: 1;
  opacity: 0.85;
}

.card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: flex-end;
}

.badge {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

.badge--muted {
  background: color-mix(in srgb, var(--text-muted) 18%, transparent);
  color: var(--text-muted);
}

.card__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.3;
}

.card__role {
  margin: 0.35rem 0 0;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--text);
}

.card__role-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-right: 0.35rem;
}

.card__summary {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  flex-grow: 1;
}

.card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 0;
}

.tech-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--border);
  color: var(--text-muted);
}

.card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.card__actions a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}
.card__actions a:hover {
  text-decoration: underline;
}

/* Repos */
.repos-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.repos-search {
  flex: 1;
  min-width: 200px;
  padding: 0.65rem 1rem;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text);
}
.repos-search:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.repos-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.repos-status--error {
  color: #dc2626;
}

.repos-list {
  display: grid;
  gap: var(--space-sm);
}

.repo-row {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), background var(--transition);
}

a.repo-row:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent-soft) 40%, var(--bg-elevated));
}

.repo-row__title {
  font-weight: 700;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.repo-row__meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.repo-row__desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Contact */
.contact__text {
  color: var(--text-muted);
  margin: 0 0 var(--space-md);
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.contact__links a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}
.contact__links a:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-lg) 0;
  background: var(--bg-elevated);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  margin-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.875rem;
}

.footer-links a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}