/* ============ AI Pulse News — Styles ============ */

:root {
  --bg: #f6f7fb;
  --bg-soft: #eef0f7;
  --card: #ffffff;
  --card-hover: #ffffff;
  --border: #e3e6f0;
  --text: #141a2e;
  --text-muted: #5c6484;
  --primary: #4f46e5;
  --primary-soft: #eef0ff;
  --accent: #0ea5e9;
  --success: #10b981;
  --shadow: 0 10px 30px rgba(20, 26, 46, 0.08);
  --shadow-lg: 0 22px 50px rgba(20, 26, 46, 0.14);
  --radius: 18px;
  --radius-sm: 12px;
  --font: 'Inter', 'Cairo', 'Segoe UI', system-ui, sans-serif;
}

[data-theme='dark'] {
  --bg: #0b0e1a;
  --bg-soft: #101426;
  --card: #151a2e;
  --card-hover: #1a2038;
  --border: #252c49;
  --text: #eef1fb;
  --text-muted: #96a0c4;
  --primary: #7c7ff2;
  --primary-soft: #20264a;
  --accent: #38bdf8;
  --success: #34d399;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 22px 50px rgba(0, 0, 0, 0.5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

/* Language-specific font weights */
html[dir='rtl'] body { font-family: 'Cairo', 'Inter', 'Segoe UI', sans-serif; }

/* Animated background orbs */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  z-index: -1;
  pointer-events: none;
  animation: float 16s ease-in-out infinite;
}
.bg-orb-1 { width: 480px; height: 480px; background: var(--primary); top: -140px; right: -100px; opacity: 0.22; }
.bg-orb-2 { width: 380px; height: 380px; background: var(--accent); bottom: -120px; left: -80px; opacity: 0.18; animation-delay: -6s; }
.bg-orb-3 { width: 260px; height: 260px; background: var(--success); top: 45%; left: 35%; opacity: 0.12; animation-delay: -11s; }

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.08); }
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-logo {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  font-size: 22px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 13px;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 40%, transparent);
  color: #fff;
}
.brand-title { display: block; font-size: 1.05rem; font-weight: 800; color: var(--text); line-height: 1.2; }
.brand-sub { display: block; font-size: 0.62rem; font-weight: 700; letter-spacing: 0.16em; color: var(--text-muted); }
.header-controls { display: flex; align-items: center; gap: 10px; }

/* ---------- Chips / buttons ---------- */
.chip {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.chip:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.chip:active { transform: translateY(0) scale(0.97); }
.chip-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none;
  color: #fff;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 35%, transparent);
}
.chip-primary:hover { color: #fff; filter: brightness(1.08); }
.chip-primary.loading { opacity: 0.7; pointer-events: none; }
.chip-outline { background: transparent; }

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  align-items: center;
  gap: 24px;
  padding: 64px 0 40px;
}
.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(1.9rem, 4.4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 14px;
  background: linear-gradient(120deg, var(--text) 30%, var(--primary) 70%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--text);
}
.hero-desc { color: var(--text-muted); font-size: 1.05rem; max-width: 60ch; margin-bottom: 24px; }
.hero-meta { display: flex; gap: 18px; flex-wrap: wrap; }
.hero-stat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}
.hero-stat.muted { color: var(--text-muted); font-weight: 500; }

.hero-art { display: grid; place-items: center; }
.art-ring {
  width: 220px; height: 220px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--accent) 60%, transparent), transparent 60%),
    radial-gradient(circle at 70% 70%, color-mix(in srgb, var(--primary) 55%, transparent), transparent 60%),
    var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  animation: pulse-ring 4s ease-in-out infinite;
}
.art-emoji { font-size: 84px; filter: drop-shadow(0 10px 20px rgba(0,0,0,0.25)); }
@keyframes pulse-ring {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* ---------- Toolbar ---------- */
.toolbar { margin-bottom: 30px; }
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px 8px 4px 14px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 18%, transparent); }
.search-icon { font-size: 1rem; color: var(--text-muted); margin-inline-end: 10px; }
.search-box input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  padding: 12px 0;
}
.search-box input::placeholder { color: var(--text-muted); }
.clear-btn {
  border: none;
  background: var(--bg-soft);
  color: var(--text-muted);
  width: 28px; height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.8rem;
  display: grid;
  place-items: center;
  transition: all 0.2s;
}
.clear-btn:hover { background: var(--border); color: var(--text); }

.filter-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.filter-chip {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-chip:hover { border-color: var(--primary); color: var(--primary); }
.filter-chip.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 5px 14px color-mix(in srgb, var(--primary) 35%, transparent);
}
.source-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.source-chip {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}
.source-chip:hover { border-color: var(--accent); color: var(--accent); }
.source-chip.active { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }

/* ---------- Status bar ---------- */
.status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 22px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid;
}
.status-bar.error { background: color-mix(in srgb, #ef4444 10%, var(--card)); border-color: color-mix(in srgb, #ef4444 35%, var(--border)); color: #ef4444; }
.status-bar.success { background: color-mix(in srgb, var(--success) 10%, var(--card)); border-color: color-mix(in srgb, var(--success) 30%, var(--border)); color: var(--success); }

/* ---------- News grid ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-bottom: 40px;
}
.news-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  animation: fade-up 0.5s ease both;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); }
.news-card.featured { grid-column: span 2; grid-row: span 2; }
.news-card .card-media {
  position: relative;
  height: 170px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-soft), var(--primary-soft));
}
.news-card.featured .card-media { height: 230px; }
.card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .card-media img { transform: scale(1.06); }
.media-fallback {
  display: grid;
  place-items: center;
  height: 100%;
  font-size: 46px;
  color: color-mix(in srgb, var(--primary) 55%, var(--text-muted));
  background: linear-gradient(135deg, var(--bg-soft), var(--primary-soft));
}
.card-cat {
  position: absolute;
  top: 12px;
  inset-inline-start: 12px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 11px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 88%, transparent);
  color: #fff;
  backdrop-filter: blur(4px);
  letter-spacing: 0.02em;
}
.card-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-title {
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card.featured .card-title { font-size: 1.3rem; -webkit-line-clamp: 3; }
.card-summary {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card.featured .card-summary { -webkit-line-clamp: 4; }
.card-meta {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.card-source { display: flex; align-items: center; gap: 6px; font-weight: 700; color: var(--text); min-width: 0; }
.card-source .src-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.card-source span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-time { white-space: nowrap; }
.card-hn { font-weight: 700; color: #f97316; }

/* Skeleton */
.skeleton-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 300px;
  position: relative;
  overflow: hidden;
}
.skeleton-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--text) 7%, transparent), transparent);
  animation: shimmer 1.4s infinite;
}
@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
@keyframes fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Empty / footer ---------- */
.empty-state {
  text-align: center;
  padding: 70px 20px;
  color: var(--text-muted);
}
.empty-emoji { font-size: 54px; display: block; margin-bottom: 14px; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 26px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- Animations ---------- */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 16px; height: 16px;
  border: 2.5px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .news-card.featured { grid-column: span 2; }
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-inline: auto; }
  .hero-meta { justify-content: center; }
  .hero-art { order: -1; }
  .art-ring { width: 150px; height: 150px; }
  .art-emoji { font-size: 56px; }
}
@media (max-width: 620px) {
  .news-grid { grid-template-columns: 1fr; }
  .news-card.featured { grid-column: span 1; }
  .header-inner { flex-wrap: wrap; }
  .brand-sub { display: none; }
  .hero { padding: 40px 0 28px; }
}