:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #14141f;
  --bg-tertiary: #1e1e2e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --accent: #00d4ff;
  --accent-secondary: #00ff88;
  --danger: #ff4466;
  --focus-ring: #00d4ff;
  --focus-glow: rgba(0, 212, 255, 0.4);
  --radius-md: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
  width: 600px; height: 600px; overflow: hidden;
  background: #000;
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
#app { width: 100%; height: 100%; position: relative; }
.screen { width: 100%; height: 100%; position: absolute; top: 0; left: 0; display: flex; flex-direction: column; }
.screen.hidden { display: none; }
.focusable { transition: all 0.15s ease; border: 2px solid transparent; cursor: pointer; outline: none; }
.focusable:focus { border-color: var(--focus-ring); box-shadow: 0 0 20px var(--focus-glow); }
.hidden { display: none !important; }

/* ---------- Header ---------- */
.app-header {
  padding: 18px 24px 12px;
  border-bottom: 1px solid #23233a;
  background: var(--bg-primary);
  flex: 0 0 auto;
}
.app-header h1 { font-size: 28px; font-weight: 700; letter-spacing: 0.5px; }
.status { display: flex; align-items: center; gap: 10px; margin-top: 6px; }
.badge-live {
  font-size: 11px; font-weight: 800; letter-spacing: 1px;
  padding: 3px 8px; border-radius: 6px;
  background: var(--bg-tertiary); color: var(--text-secondary);
  border: 1px solid #2c2c40;
}
.badge-live.is-live {
  color: #04210f; background: var(--accent-secondary);
  border-color: var(--accent-secondary);
  box-shadow: 0 0 10px rgba(0, 255, 136, 0.4);
}
.badge-live.is-busy { color: var(--accent); border-color: var(--accent); }
.badge-live.is-error { color: #fff; background: var(--danger); border-color: var(--danger); }
.status-text { font-size: 13px; color: var(--text-secondary); }

/* ---------- Category bar ---------- */
.catbar {
  flex: 0 0 auto;
  display: flex;
  gap: 8px;
  padding: 12px 18px 6px;
  background: var(--bg-primary);
}
.chip {
  flex: 1 1 0;
  min-height: 44px;
  padding: 8px 6px;
  border-radius: 10px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  border: 2px solid transparent;
}
.chip.active {
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border-bottom: 2px solid var(--accent);
}
.chip.active:focus { border-color: var(--focus-ring); }
.refresh-btn {
  flex: 0 0 auto;
  min-height: 44px;
  width: 52px;
  border-radius: 10px;
  background: var(--bg-tertiary);
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
}

/* ---------- Headline list ---------- */
.list {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 10px 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.headline {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  width: 100%;
  min-height: 64px;
  padding: 12px 15px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 2px solid transparent;
  border-left: 4px solid var(--accent);
}
.hl-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.3px;
}
.hl-source { color: var(--accent); }
.hl-dot { color: var(--text-muted); }
.hl-title {
  font-size: 16px;
  line-height: 1.35;
  font-weight: 600;
  color: var(--text-primary);
}
.empty {
  margin: auto;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
  padding: 30px;
}

.hint {
  flex: 0 0 auto;
  padding: 9px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg-primary);
  border-top: 1px solid #23233a;
}

/* ---------- Detail ---------- */
.detail-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 22px 24px 10px;
}
.d-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.4px;
  color: var(--text-muted);
  text-transform: uppercase;
}
.d-source { color: var(--accent); }
.d-cat {
  margin-left: auto;
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 11px;
}
.d-title {
  margin-top: 14px;
  font-size: 26px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
}
.d-summary {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-secondary);
}
.d-pos {
  margin-top: 18px;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-muted);
}

/* ---------- Nav bar ---------- */
.navbar {
  flex: 0 0 auto;
  display: flex;
  gap: 10px;
  padding: 12px 18px 16px;
  background: var(--bg-primary);
  border-top: 1px solid #23233a;
}
.navbtn {
  flex: 1 1 0;
  min-height: 56px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
}