/* ─── Reset & Base ──────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #555770;
  --color-text-muted: #8888a0;
  --color-primary: #2d5be3;
  --color-primary-hover: #1e45b8;
  --color-border: #e2e4e9;
  --color-border-light: #f0f1f4;
  --color-pill-bg: #eef0f5;
  --color-pill-active-bg: #2d5be3;
  --color-pill-active-text: #ffffff;
  --color-card-hover: #f5f6f9;
  --color-badge-bg: #eef0f5;
  --color-badge-text: #555770;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --max-width: 1200px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

/* ─── Navigation ───────────────────────────────────────────────────────── */
.nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-brand:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.nav-links a:hover {
  background: var(--color-pill-bg);
  color: var(--color-text);
  text-decoration: none;
}

.nav-links a.active {
  background: var(--color-pill-active-bg);
  color: var(--color-pill-active-text);
}

/* ─── Page Container ───────────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ─── Hero Section (background wrapper) ──────────────────────────────── */
.hero-section {
  position: relative;
  overflow: hidden;
  margin: 0 -1.5rem;
  padding: 0 1.5rem;
  margin-bottom: 2rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  will-change: transform;
  transform: translateY(0) scale(1.15);
  transform-origin: center top;
}

.hero-bg svg {
  width: 100%;
  height: 100%;
}

.hero-section .hero,
.hero-section .filters {
  position: relative;
  z-index: 1;
}

/* ─── Hero / Page Header ──────────────────────────────────────────────── */
.hero {
  text-align: center;
  margin-bottom: 2.5rem;
  padding: 1rem 0;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.hero .subheading {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}

.hero .description {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ─── Category Filter Pills ───────────────────────────────────────────── */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.pill {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  background: var(--color-pill-bg);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

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

.pill.active {
  background: var(--color-pill-active-bg);
  color: var(--color-pill-active-text);
  box-shadow: var(--shadow-sm);
}

.pill:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ─── Card Grid ────────────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Link Card ────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s, transform 0.2s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}

.card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.card-thumb {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: var(--color-border-light);
}

.card-thumb-placeholder {
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, #e8eaf0 0%, #d5d9e2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-thumb-placeholder .placeholder-domain {
  font-size: 0.85rem;
  font-weight: 600;
  color: #8890a4;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  padding: 0 1rem;
  text-align: center;
}

.card-body {
  padding: 1rem 1.1rem 1.1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-source {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-category {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
  align-self: flex-start;
}

.card-title {
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.35;
  margin-bottom: 0.35rem;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.6rem;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-border-light);
  margin-top: auto;
  min-height: 28px;
}

.card-external-icon {
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* ─── Editor Cards ─────────────────────────────────────────────────────── */
.editor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.editor-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: box-shadow 0.2s;
}

.editor-card:hover {
  box-shadow: var(--shadow-md);
}

.editor-avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.85rem;
  background: var(--color-border-light);
}

.editor-name {
  font-size: 1.05rem;
  font-weight: 650;
  color: var(--color-text);
  margin-bottom: 0.15rem;
}

.editor-role {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.editor-bio {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  margin-bottom: 0.75rem;
}

.editor-link {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 500;
}

.editor-link:hover {
  text-decoration: underline;
}

/* ─── Submit Page ──────────────────────────────────────────────────────── */
.submit-content {
  max-width: 640px;
  margin: 0 auto;
}

.submit-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.submit-content p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.submit-content ul {
  margin: 0 0 1.5rem 1.25rem;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.submit-content li {
  margin-bottom: 0.25rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, box-shadow 0.15s;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: #fff;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ─── Loading & Empty States ───────────────────────────────────────────── */
.loading {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.loading-spinner {
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-bottom: 0.75rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ─── Footer ───────────────────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-light);
  margin-top: 2rem;
}

/* ─── Responsive tweaks ───────────────────────────────────────────────── */
@media (max-width: 580px) {
  .hero h1 {
    font-size: 1.65rem;
  }

  .hero .subheading {
    font-size: 1rem;
  }

  .nav-inner {
    padding: 0 1rem;
  }

  .container {
    padding: 1.25rem 1rem 3rem;
  }

  .nav-links a {
    padding: 0.4rem 0.6rem;
    font-size: 0.82rem;
  }
}