/* ===== Hacker Directory — shared design system ===== */

@import url("https://fonts.googleapis.com/css2?family=Gluten:wght@400;600;700;800&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap");

:root {
  --accent-red: #ff5252;
  --accent-orange: #ff8c37;
  --accent-yellow: #ffd23f;
  --accent-green: #3ef2a1;
  --accent-teal: #33d9c1;
  --accent-blue: #4d8bff;
  --accent-purple: #a56dff;
  --accent-pink: #ff5cb3;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-goofy: "Gluten", "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
}

/* ---------- Light theme (default) — pastel pink notebook paper ---------- */
:root,
[data-theme="light"] {
  --bg: #f7ecdf;
  --bg-raised: #fffaf3;
  --bg-card: #fffaf3;
  --bg-card-hover: #fff1e6;
  --border: #ecdcc8;
  --border-hover: #e2c4b0;
  --text-primary: #2e2320;
  --text-secondary: #6b564e;
  --text-muted: #9c8579;
  --shadow-color: rgba(120, 60, 60, 0.1);
  --pill-bg: #fbe4ee;
  --grain-opacity: 0.025;

  --accent-pink-soft: #ffb8d9;
  --accent-peach: #ffcfa8;
  --accent-lilac: #d9c2ff;
  --accent-mint: #b8f2d9;

  color-scheme: light;
}

/* ---------- Dark theme ---------- */
[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-raised: #131313;
  --bg-card: #161616;
  --bg-card-hover: #1c1c1c;
  --border: #2a2a2a;
  --border-hover: #3d3d3d;
  --text-primary: #f5f5f5;
  --text-secondary: #a8a8a8;
  --text-muted: #6e6e6e;
  --shadow-color: rgba(0, 0, 0, 0.6);
  --pill-bg: #1e1e1e;
  --grain-opacity: 0.035;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-display);
  transition: background-color 0.25s ease, color 0.25s ease;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

[data-theme="light"] body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 35px,
    rgba(180, 140, 120, 0.08) 36px
  );
}

a {
  color: inherit;
}

::selection {
  background: var(--accent-purple);
  color: #fff;
}

/* ---------- Top nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  row-gap: 0.6rem;
  padding: 1.1rem 2rem;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-goofy);
  font-weight: 700;
  font-size: 1.35rem;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
  box-shadow: 0 0 12px var(--accent-green);
}

[data-theme="light"] .nav-brand .dot {
  background: linear-gradient(135deg, var(--accent-pink-soft), var(--accent-lilac));
  box-shadow: 0 0 12px var(--accent-pink-soft);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

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

/* ---------- Theme toggle button ---------- */
#theme-toggle {
  --size: 42px;
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text-primary);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.15s ease;
  flex-shrink: 0;
}

#theme-toggle:hover {
  border-color: var(--accent-purple);
  transform: translateY(-1px);
}

#theme-toggle svg {
  width: 20px;
  height: 20px;
}

#theme-toggle.spin svg {
  animation: toggle-spin 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes toggle-spin {
  from {
    transform: rotate(0deg) scale(0.7);
    opacity: 0.4;
  }
  to {
    transform: rotate(360deg) scale(1);
    opacity: 1;
  }
}

.icon-sun {
  display: none;
}
.icon-moon {
  display: block;
}
[data-theme="light"] .icon-sun {
  display: block;
}
[data-theme="light"] .icon-moon {
  display: none;
}

/* ---------- Layout helpers ---------- */
.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

/* ---------- Hero ---------- */
.hero {
  padding: 4.5rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-goofy);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 1.05;
  margin: 0 0 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero .highlight {
  background: linear-gradient(100deg, var(--accent-green), var(--accent-blue) 45%, var(--accent-purple) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

[data-theme="light"] .hero .highlight {
  background: linear-gradient(100deg, #ff8fc7, #b98cff 50%, #ff9d6c 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  justify-content: center;
  margin-top: 2.2rem;
  flex-wrap: wrap;
}

.hero-stats div {
  text-align: center;
}

.hero-stats .num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-green);
}

.hero-stats .label {
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.7rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: linear-gradient(100deg, var(--accent-green), var(--accent-teal));
  color: #061a13;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -8px var(--accent-green);
}

[data-theme="light"] .btn-primary {
  background: linear-gradient(100deg, #ff9dc9, #ffc39a);
  color: #3a1c2b;
}

[data-theme="light"] .btn-primary:hover {
  box-shadow: 0 8px 24px -8px var(--accent-pink-soft);
}

.btn-outline {
  border-color: var(--border);
  color: var(--text-primary);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--accent-purple);
  transform: translateY(-2px);
}

[data-theme="light"] .btn-outline:hover {
  border-color: #d9a4ff;
}

/* ---------- Search / filter bar ---------- */
.controls {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 2rem;
}

.search-input {
  flex: 1;
  min-width: 220px;
  padding: 0.8rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.search-input:focus {
  border-color: var(--accent-blue);
}

.filter-pill {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font-display);
}

.filter-pill:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.filter-pill.active {
  background: var(--accent-purple);
  border-color: var(--accent-purple);
  color: #fff;
}

[data-theme="light"] .filter-pill.active {
  background: #ff8fc7;
  border-color: #ff8fc7;
  color: #3a1c2b;
}

/* ---------- Directory grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: 1.25rem;
  padding-bottom: 4rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--card-accent-1, var(--accent-green)), var(--card-accent-2, var(--accent-blue)));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 40px -20px var(--shadow-color);
}

.card:hover::before {
  opacity: 1;
}

.card-top {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.avatar {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  object-fit: cover;
  background: var(--pill-bg);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.card-name {
  font-family: var(--font-goofy);
  font-weight: 700;
  font-size: 1.18rem;
  line-height: 1.2;
}

.card-role {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

.card-org {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.card-bio {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
  flex-grow: 1;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pill {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: var(--pill-bg);
  color: var(--pill-color, var(--text-primary));
  font-family: var(--font-mono);
  border: 1px solid transparent;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.card-footer .arrow {
  transition: transform 0.15s ease;
}

.card:hover .card-footer .arrow {
  transform: translateX(3px);
}

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.site-footer a {
  color: var(--accent-blue);
  text-decoration: none;
}

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

/* ---------- Skeleton loading ---------- */
.skeleton {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  height: 220px;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ---------- Responsive breakpoints ---------- */
@media (max-width: 768px) {
  .wrap { padding: 0 1.5rem; }
  .nav { padding: 1rem 1.5rem; }
  .hero { padding: 3.5rem 0 2.5rem; }
}

@media (max-width: 640px) {
  .nav { padding: 0.9rem 1.2rem; gap: 0.6rem 1rem; }
  .wrap { padding: 0 1.2rem; }
  .hero { padding: 3rem 0 2rem; }
  .hero-stats { gap: 1.5rem; margin-top: 1.8rem; }
  .hero p { font-size: 1.05rem; }
  .btn { padding: 0.75rem 1.4rem; font-size: 0.92rem; }
  .card { padding: 1.25rem; }
  .grid { gap: 1rem; }
}

@media (max-width: 480px) {
  .nav-brand { font-size: 1.15rem; gap: 0.5rem; }
  .nav-links { gap: 1rem; font-size: 0.85rem; }
  .hero h1 { margin-bottom: 0.8rem; }
  .hero-stats { gap: 1.1rem 1.6rem; }
  .search-input { min-width: 0; width: 100%; }
  .controls { gap: 0.6rem; }
}

@media (max-width: 360px) {
  .nav-links { gap: 0.7rem; }
  .nav-links a { font-size: 0.8rem; }
}

/* Short / landscape viewports: trim vertical hero padding so it doesn't
   push content below the fold on rotated phones. */
@media (max-height: 480px) and (orientation: landscape) {
  .hero { padding: 2rem 0 1.5rem; }
  .hero-stats { margin-top: 1.2rem; }
}