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

:root {
  --bg: #f5f5f5;
  --card-bg: #fff;
  --text: #1a1a1a;
  --text-secondary: #666;
  --accent: #4a6cf7;
  --border: #e5e5e5;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --imp5: #ef4444;
  --imp5-bg: #fef2f2;
  --imp4: #f97316;
  --imp4-bg: #fff7ed;
  --imp3: #3b82f6;
  --imp3-bg: #eff6ff;
  --imp2: #6b7280;
  --imp2-bg: #f3f4f6;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Login */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
}
.login-box {
  background: var(--card-bg);
  padding: 2.5rem 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  width: 320px;
}
.login-box h1 { font-size: 1.5rem; margin-bottom: 1.5rem; }
.login-box input {
  width: 100%; padding: 0.6rem 0.8rem;
  border: 1px solid var(--border); border-radius: 6px;
  font-size: 0.95rem; margin-bottom: 1rem;
}
.login-box button {
  width: 100%; padding: 0.6rem;
  background: var(--accent); color: #fff; border: none;
  border-radius: 6px; font-size: 0.95rem; cursor: pointer;
}
.login-box button:hover { opacity: 0.9; }
.error { color: #e53935; font-size: 0.85rem; margin-top: 0.5rem; }

[hidden] { display: none !important; }

/* Header */
.header {
  max-width: 800px; margin: 0 auto;
  padding: 1.5rem 1rem 0.5rem;
}
.header-top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 0.8rem;
}
.header-top h1 { font-size: 1.3rem; }
.header-stats {
  display: flex; gap: 0.5rem; align-items: center;
}
.stat-badge {
  font-size: 0.78rem; color: var(--text-secondary);
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 0.2rem 0.6rem;
  white-space: nowrap;
}
.stat-badge .stat-num {
  font-weight: 600; color: var(--accent);
}
.stat-badge .stat-num.has-unread {
  color: var(--imp4);
}
.stat-rss {
  border-color: #fb923c;
}
.stat-rss .stat-num.has-unread {
  color: var(--imp5);
}
.header-actions {
  display: flex; align-items: center; gap: 0.8rem;
}
.btn-run-digest {
  padding: 0.4rem 1rem;
  background: var(--accent); color: #fff; border: none;
  border-radius: 6px; font-size: 0.85rem; cursor: pointer;
  white-space: nowrap;
}
.btn-run-digest:hover { opacity: 0.9; }
.btn-run-digest:disabled {
  opacity: 0.5; cursor: not-allowed;
}
.nav-link {
  color: var(--accent); text-decoration: none; font-size: 0.9rem;
}
.nav-link:hover { text-decoration: underline; }

.digest-progress {
  max-width: 800px; margin: 0 auto;
  padding: 0.5rem 1rem;
  font-size: 0.85rem; color: var(--text-secondary);
  background: #e8f0fe; border-radius: 6px;
  margin-bottom: 0.5rem;
}

.filters { display: flex; flex-direction: column; gap: 0.5rem; }
.filter-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.filter-row select, .filter-row input {
  padding: 0.4rem 0.6rem; border: 1px solid var(--border);
  border-radius: 6px; font-size: 0.85rem; background: var(--card-bg);
}
.filter-row input[type="search"] { flex: 1; min-width: 120px; }

/* Digest list */
.digest-list {
  max-width: 800px; margin: 1rem auto;
  padding: 0 1rem;
  display: flex; flex-direction: column; gap: 0.8rem;
}

/* Card */
.digest-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--border);
  overflow: hidden;
}
.digest-card[data-importance="5"] { border-left-color: var(--imp5); }
.digest-card[data-importance="4"] { border-left-color: var(--imp4); }
.digest-card[data-importance="3"] { border-left-color: var(--imp3); }
.digest-card[data-importance="2"] { border-left-color: var(--imp2); }

.card-main {
  padding: 1rem 1.2rem;
  cursor: pointer;
}
.card-header-row {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 0.5rem; margin-bottom: 0.3rem;
}
.card-title {
  font-size: 1rem; font-weight: 600;
  flex: 1; min-width: 0;
}
.card-actions {
  display: flex; gap: 0.3rem; flex-shrink: 0;
}
.btn-action {
  width: 28px; height: 28px; border: 1px solid var(--border);
  border-radius: 6px; background: var(--card-bg); cursor: pointer;
  font-size: 0.9rem; color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  padding: 0; line-height: 1;
}
.btn-action:hover { background: var(--bg); }
.btn-read.active { color: #16a34a; border-color: #16a34a; background: #f0fdf4; }
.btn-fav.active { color: #eab308; border-color: #eab308; background: #fefce8; }

.digest-card.is-read { opacity: 0.6; }
.digest-card.is-read:hover { opacity: 1; }
.card-title a {
  color: var(--text); text-decoration: none;
}
.card-title a:hover { color: var(--accent); }

.card-meta {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  margin-bottom: 0.5rem; font-size: 0.8rem; color: var(--text-secondary);
}
.badge-importance {
  display: inline-block; padding: 0.1rem 0.4rem;
  border-radius: 4px; font-weight: 600; font-size: 0.75rem;
}
.badge-importance[data-imp="5"] {
  background: var(--imp5-bg); color: var(--imp5);
}
.badge-importance[data-imp="4"] {
  background: var(--imp4-bg); color: var(--imp4);
}
.badge-importance[data-imp="3"] {
  background: var(--imp3-bg); color: var(--imp3);
}
.badge-importance[data-imp="2"] {
  background: var(--imp2-bg); color: var(--imp2);
}
.badge-feed {
  background: #e8f5e9; color: #388e3c;
  padding: 0.1rem 0.4rem; border-radius: 4px;
}
.badge-time { color: var(--text-secondary); }

.card-oneliner {
  font-size: 0.9rem; color: var(--text);
  margin-bottom: 0.3rem;
}

.card-group-sources {
  font-size: 0.8rem; color: var(--text-secondary);
  font-style: italic; margin-bottom: 0.3rem;
}

.card-expand-hint {
  font-size: 0.8rem; color: var(--accent); cursor: pointer;
}

/* Expanded detail */
.card-detail {
  padding: 0 1.2rem 1rem;
  border-top: 1px solid var(--border);
  display: none;
}
.card-detail.open { display: block; }
.card-detail-summary {
  font-size: 0.9rem; line-height: 1.7;
  white-space: pre-wrap; padding-top: 0.8rem;
}
.card-detail-links {
  margin-top: 0.8rem; font-size: 0.85rem;
}
.card-detail-links a {
  color: var(--accent); text-decoration: none;
  display: block; margin-bottom: 0.3rem;
}
.card-detail-links a:hover { text-decoration: underline; }

/* Detail action buttons */
.card-detail-actions {
  display: flex; gap: 0.5rem; justify-content: flex-end;
  margin-top: 1rem; padding-top: 0.8rem;
  border-top: 1px dashed var(--border);
}
.card-detail-actions .btn-action {
  width: auto; height: auto;
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem; gap: 0.3rem;
}
.card-detail-actions .btn-action span {
  font-size: 0.8rem;
}

/* Deep Read */
.card-deep-read-section {
  margin-top: 1rem; padding-top: 0.8rem;
  border-top: 1px dashed var(--border);
}
.deep-read-btn-row {
  display: flex; align-items: center; gap: 0.6rem;
  margin-bottom: 0.6rem;
}
.btn-deep-read, .btn-deep-read-refresh {
  padding: 0.4rem 0.9rem;
  border: 1px solid #7c4dff;
  border-radius: 6px; background: #f3edff;
  color: #7c4dff; font-size: 0.85rem; font-weight: 500;
  cursor: pointer; white-space: nowrap;
}
.btn-deep-read:hover, .btn-deep-read-refresh:hover {
  background: #ede3ff; border-color: #651fff;
}
.btn-deep-read-refresh {
  background: transparent; font-size: 0.8rem;
  color: var(--text-secondary); border-color: var(--border);
}
.btn-deep-read-refresh:hover {
  color: #7c4dff; border-color: #7c4dff;
  background: #f3edff;
}
.deep-read-loading {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.85rem; color: #7c4dff;
}
.spinner-small {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid #e0d4ff; border-top-color: #7c4dff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.card-deep-read-content {
  background: #f9f5ff; border-left: 3px solid #7c4dff;
  border-radius: 0 6px 6px 0;
  padding: 1rem 1.2rem; margin-top: 0.5rem;
  font-size: 0.9rem; line-height: 1.8;
}
.card-deep-read-content:empty { display: none; }
.card-deep-read-content h3 {
  font-size: 1rem; font-weight: 600; color: #5e35b1;
  margin: 1rem 0 0.4rem; padding-bottom: 0.2rem;
  border-bottom: 1px solid #e8ddf5;
}
.card-deep-read-content h3:first-child { margin-top: 0; }
.card-deep-read-content h4 {
  font-size: 0.9rem; font-weight: 600; color: #7c4dff;
  margin: 0.8rem 0 0.3rem;
}
.card-deep-read-content p {
  margin: 0.4rem 0;
}
.card-deep-read-content ul {
  margin: 0.4rem 0; padding-left: 1.4rem;
}
.card-deep-read-content li {
  margin: 0.2rem 0;
}
.card-deep-read-content strong {
  color: #4a148c;
}

/* Load more */
.load-more-wrapper { text-align: center; padding: 1rem; }
.load-more-btn {
  padding: 0.5rem 2rem; border: 1px solid var(--border);
  border-radius: 6px; background: var(--card-bg);
  cursor: pointer; font-size: 0.9rem;
}
.load-more-btn:hover { background: var(--bg); }
.no-more { text-align: center; padding: 1rem; color: var(--text-secondary); font-size: 0.85rem; }
.loading { text-align: center; padding: 2rem; color: var(--text-secondary); }

/* Mobile */
@media (max-width: 600px) {
  .header { padding: 1rem 0.8rem 0.4rem; }
  .header-top { flex-wrap: wrap; gap: 0.5rem; }
  .digest-list { padding: 0 0.5rem; }
  .card-main { padding: 0.8rem; }
}