:root {
  --fg: #0b1021;
  --muted: #5a6275;
  --accent: #2b74ff;
  --bg: #f7f8fb;
  --bg-elevated: #ffffff;
  --border: #e8ebf3;
  --input-bg: #ffffff;
  --summary: #1a1f33;
  --badge-bg: #f5f7ff;
  --badge-border: #e0e6fb;
  --thumb-bg: #eef2ff;
}

:root.dark {
  --fg: #f5f7ff;
  --muted: #9ca3c5;
  --accent: #5b8dff;
  --bg: #050816;
  --bg-elevated: #101325;
  --border: #2b3250;
  --input-bg: #050816;
  --summary: #d3d7f0;
  --badge-bg: rgba(88, 101, 242, 0.18);
  --badge-border: #3d4470;
  --thumb-bg: #202744;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--fg);
  background: var(--bg);
  transition: background-color 0.2s ease, color 0.2s ease;
}

header {
  position: sticky;
  top: 0;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: 14px 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
}

.header-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

h1 {
  font-size: 20px;
  margin: 0;
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.container {
  max-width: 900px;
  margin: 24px auto;
  padding: 0 16px;
}

.controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  align-items: center;
}

input,
select,
button {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  background: var(--input-bg);
  color: var(--fg);
  transition: background-color 0.15s ease, border-color 0.15s ease,
    box-shadow 0.15s ease, color 0.15s ease;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(43, 116, 255, 0.15);
}

button {
  cursor: pointer;
}

.icon-button {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
}

.icon-button:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

:root.dark .icon-button:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 720px) {
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}

article {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.thumb {
  width: 84px;
  height: 84px;
  border-radius: 10px;
  flex: 0 0 84px;
  background: var(--thumb-bg);
  object-fit: cover;
  display: block;
}

.content {
  flex: 1;
  min-width: 0;
}

.title {
  font-size: 16px;
  margin: 0 0 6px;
  line-height: 1.35;
}

.title a {
  color: var(--fg);
  text-decoration: none;
}

.title a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.meta {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.summary {
  font-size: 14px;
  color: var(--summary);
}

.notice {
  font-size: 12px;
  color: var(--muted);
}

footer {
  text-align: center;
  padding: 24px;
  color: var(--muted);
  font-size: 13px;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border: 1px solid var(--badge-border);
  border-radius: 999px;
  font-size: 12px;
  background: var(--badge-bg);
}