:root {
  --bg: #0b1220;
  --bg-2: #0e1628;
  --card: #121a2d;
  --panel: #101829;
  --border: #1f2b46;
  --text: #e8eef7;
  --muted: #aab6d6;
  --accent: #4f7ffa;
  --accent-2: #15c3a7;
  --warn: #ffce63;
  --error: #ff6b7a;
  --shadow-1: 0 8px 26px rgba(11,18,32,0.45);
  --shadow-2: 0 14px 50px rgba(11,18,32,0.55);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Vazirmatn", "Inter", ui-sans-serif, system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(79,127,250,0.14), transparent 45%),
    radial-gradient(1000px 500px at 90% -20%, rgba(21,195,167,0.10), transparent 45%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
}

/* Light theme */
.theme-light {
  --bg: #f7f8fb;
  --bg-2: #eef1f7;
  --card: #ffffff;
  --panel: #ffffff;
  --border: #E3E8F2;
  --text: #1e2533;
  --muted: #5f6b85;
  --accent: #2f5cff;
  --accent-2: #00b39b;
  background: linear-gradient(180deg, var(--bg), var(--bg-2));
}

.app { display: grid; grid-template-rows: auto auto 1fr auto; min-height: 100vh; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--border);
  background: rgba(16, 24, 41, 0.6); backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 100;
}
.theme-light .topbar { background: rgba(255,255,255,0.75); }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo {
  display: inline-flex; align-items: center; gap: 10px;
  background: transparent; border: none; color: var(--text); cursor: pointer;
  font-weight: 700; letter-spacing: 0.2px;
}
.logo-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 18px rgba(79,127,250,0.8);
}
.brand-text { font-size: 16px; }

.topbar-actions { display: flex; align-items: center; gap: 14px; }

.searchbox {
  display: grid; grid-template-columns: 88px 1fr 110px; gap: 8px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 999px;
  padding: 8px; box-shadow: var(--shadow-1);
}
.search-input {
  background: transparent; border: none; outline: none; color: var(--text);
  padding: 8px 10px; font-size: 14px;
}
.search-input::placeholder { color: #8290b8; }
.scope-btn {
  background: #0e1a31; border: 1px solid var(--border); color: var(--text);
  border-radius: 999px; font-weight: 600; cursor: pointer;
}
.theme-light .scope-btn { background: #f3f5fb; }
.search-go {
  background: linear-gradient(135deg, var(--accent), #6f95ff);
  color: #fff; border: none; border-radius: 999px; font-weight: 700; cursor: pointer;
}
.search-go:hover { filter: brightness(1.05); }

.scope-menu {
  position: absolute; margin-top: 8px; background: var(--panel);
  border: 1px solid var(--border); border-radius: 12px; padding: 6px; width: 180px;
  box-shadow: var(--shadow-2);
}
.scope-menu li {
  list-style: none; padding: 10px; border-radius: 8px; cursor: pointer;
}
.scope-menu li[aria-selected="true"] { background: #15223e; }
.theme-light .scope-menu li[aria-selected="true"] { background: #eef2ff; }

/* Quick actions */
.divider { width: 1px; height: 28px; background: var(--border); }
.quick-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn, .pill-btn, .theme-toggle {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 8px 12px; cursor: pointer;
}
.icon-btn:hover, .pill-btn:hover, .theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn.sm { padding: 6px; border-radius: 8px; }
.ico { width: 16px; height: 16px; display: inline-block; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"/>' ) no-repeat center / contain; mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"/>' ) no-repeat center / contain; }
.ico-history { /* replace mask */ }
.ico-bookmark { /* replace mask */ }
.ico-settings { /* replace mask */ }
.ico-share { /* replace mask */ }
.ico-open { /* replace mask */ }

/* Tabs & filters row */
.tabs-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; gap: 10px; border-bottom: 1px solid var(--border);
}
.tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.tab {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  padding: 8px 12px; border-radius: 10px; cursor: pointer; font-weight: 600;
}
.tab.is-active, .chip.is-active { border-color: var(--accent); color: var(--accent); }
.filters { display: flex; gap: 6px; }
.chip {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  padding: 8px 12px; border-radius: 999px; cursor: pointer;
}

/* Main layout */
.layout {
  display: grid; grid-template-columns: 320px 1fr; gap: 16px;
  padding: 18px; max-width: 1200px; margin: 0 auto;
}
.panel-left, .panel-right { display: grid; gap: 16px; }
.panel-left { align-content: start; }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow-1);
}
.panel-header h3 { margin: 0 0 8px; color: var(--muted); font-size: 15px; }

.sources-list { list-style: none; padding: 0; margin: 0; }
.source-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 8px; border-bottom: 1px dashed var(--border);
}
.source-item:last-child { border-bottom: none; }
.source-name { color: var(--text); }
.source-link { color: var(--accent); text-decoration: none; font-weight: 700; }
.source-link:hover { text-decoration: underline; }

.filters-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.filter-line {
  display: grid; grid-template-columns: 110px 1fr; align-items: center; gap: 8px;
}
.filter-line select {
  background: #0e1a31; border: 1px solid var(--border); color: var(--text);
  padding: 8px 10px; border-radius: 10px;
}
.theme-light .filter-line select { background: #f3f5fb; color: #1e2533; }

/* Suggest buttons */
.suggest-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.suggest-btn {
  width: 100%; text-align: right; background: #0e1a31; border: 1px solid var(--border);
  color: var(--text); padding: 10px 12px; border-radius: 10px; cursor: pointer;
}
.suggest-btn:hover { border-color: var(--accent); color: var(--accent); }
.theme-light .suggest-btn { background: #f3f5fb; }

/* Progress card */
.progress-card { display: grid; gap: 10px; }
.progress-head { display: flex; align-items: center; justify-content: space-between; }
.progress-title { font-weight: 700; }
.progress-text { color: var(--muted); }
.progress-bar {
  width: 100%; height: 8px; background: #0f1627; border-radius: 999px; overflow: hidden;
  border: 1px solid var(--border);
}
.progress-fill {
  width: 0%; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 300ms ease;
}

/* Synthesis card */
.synthesis-card { display: grid; gap: 12px; }
.synth-header { display: flex; align-items: center; justify-content: space-between; }
.synth-actions { display: flex; gap: 8px; }
.synth-summary { color: var(--muted); margin: 0; }
.synth-body { display: grid; gap: 12px; }
.section h4 { margin: 0 0 6px; font-size: 15px; color: var(--text); }
.section .muted { color: var(--muted); }
.keypoints { margin: 0; padding-right: 18px; }

/* Results list */
.results-card { display: grid; gap: 12px; }
.results-header { display: flex; align-items: center; justify-content: space-between; }
.results-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.result-item {
  display: grid; grid-template-columns: 1fr auto; gap: 10px;
  padding: 10px; border: 1px solid var(--border); border-radius: 12px;
  background: #0f1627;
}
.theme-light .result-item { background: #f7f9ff; }
.result-title { color: var(--text); font-weight: 700; text-decoration: none; }
.result-title:hover { color: var(--accent); }
.result-meta { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.dot { width: 4px; height: 4px; border-radius: 50%; background: var(--muted); display: inline-block; }
.result-snippet { margin: 6px 0 0; color: #cbd6f1; }
.result-actions { display: inline-flex; gap: 6px; }

/* Pagination */
.pagination {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding-top: 6px;
}
.page-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  padding: 8px 12px; border-radius: 999px; cursor: pointer;
}
.page-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.page-indicator { color: var(--muted); }

/* Footer */
.footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-top: 1px solid var(--border);
  color: var(--muted); font-size: 13px; background: rgba(16, 24, 41, 0.35);
}

/* Responsive */
@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; }
  .panel-left { order: 2; }
  .panel-right { order: 1; }
}
@media (max-width: 680px) {
  .searchbox { grid-template-columns: 72px 1fr 86px; }
  .tabs-row { flex-direction: column; align-items: flex-start; gap: 10px; }
  .result-item { grid-template-columns: 1fr; }
}

/* High contrast focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}