/* ── tokens ── */
:root {
  --bg: #0b0f14;
  --bg-2: #131a24;
  --card: #17202e;
  --card-hover: #1c2738;
  --text: #e4eaf2;
  --text-2: #a0b1c5;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --border: rgba(255, 255, 255, 0.06);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --radius: 12px;
  --font: "Inter", "SF Pro Display", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, sans-serif;
}

html[data-theme="light"] {
  --bg: #f5f5f0;
  --bg-2: #ebebdf;
  --card: #ffffff;
  --card-hover: #fafaf5;
  --text: #1a1a1a;
  --text-2: #6b7280;
  --accent: #0891b2;
  --accent-soft: rgba(8, 145, 178, 0.08);
  --border: rgba(0, 0, 0, 0.07);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* ── reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
}

/* ── base ── */
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

/* ── hero ── */
.hero {
  margin-bottom: 2rem;
}

.hero-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.tagline {
  color: var(--text-2);
  font-size: 0.95rem;
  margin-top: 0.3rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* ── buttons ── */
.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.icon-btn:hover {
  background: var(--card-hover);
  color: var(--text);
}

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

.refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  height: 38px;
  padding: 0 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text-2);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.refresh-btn:hover {
  background: var(--card-hover);
  color: var(--text);
}

.refresh-btn.loading svg {
  animation: spin 0.8s linear infinite;
}

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

/* ── filter chips ── */
.filters {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
  padding-bottom: 0.25rem;
}

.chip {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

/* ── updated text ── */
.updated {
  color: var(--text-2);
  font-size: 0.8rem;
  margin-top: 1rem;
}

/* ── news list ── */
.news-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

/* ── news card ── */
.news-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  animation: fadeUp 0.35s ease both;
}

.news-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  background: var(--card-hover);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.source-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  margin-bottom: 0.6rem;
}

.news-item h2 {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.news-item a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s;
}

.news-item a:hover {
  color: var(--accent);
}

.summary {
  color: var(--text-2);
  font-size: 0.9rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.meta {
  color: var(--text-2);
  font-size: 0.78rem;
  margin-top: 0.6rem;
  opacity: 0.7;
}

/* ── skeleton loading ── */
.skeleton {
  pointer-events: none;
}

.skeleton .sk-badge,
.skeleton .sk-title,
.skeleton .sk-text,
.skeleton .sk-meta {
  background: var(--border);
  border-radius: 6px;
  animation: pulse 1.3s ease-in-out infinite;
}

.skeleton .sk-badge {
  width: 80px;
  height: 18px;
  margin-bottom: 0.7rem;
}

.skeleton .sk-title {
  width: 75%;
  height: 18px;
  margin-bottom: 0.55rem;
}

.skeleton .sk-text {
  width: 100%;
  height: 14px;
  margin-bottom: 0.4rem;
}

.skeleton .sk-text.short {
  width: 55%;
}

.skeleton .sk-meta {
  width: 35%;
  height: 12px;
  margin-top: 0.6rem;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.15; }
}

/* ── responsive ── */
@media (max-width: 500px) {
  .page {
    padding: 1.5rem 1rem 3rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .hero-top {
    flex-direction: column;
  }

  .hero-actions {
    width: 100%;
  }

  .refresh-btn {
    flex: 1;
    justify-content: center;
  }
}