@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;700&family=IBM+Plex+Mono:wght@500&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
  --paper: #f1f2ee;
  --paper-raised: #ffffff;
  --ink: #1b2430;
  --ink-soft: #4a5568;
  --ink-faint: #8b93a1;
  --line: #d8dad2;
  --teal: #1f6f5c;
  --teal-bg: #e2efe9;
  --amber: #a4640e;
  --amber-bg: #f6e9d5;
  --blue: #2b5e8c;
  --blue-bg: #dfe9f2;
  --coral: #a3402c;
  --coral-bg: #f3e0da;
  --radius: 10px;
}

[data-mode="dark"] {
  --paper: #14181d;
  --paper-raised: #1d232b;
  --ink: #e9ebe6;
  --ink-soft: #b3b9c2;
  --ink-faint: #6b7280;
  --line: #2c333c;
  --teal-bg: #17322a;
  --amber-bg: #33260f;
  --blue-bg: #18293a;
  --coral-bg: #351f18;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Noto Sans JP', sans-serif;
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header.masthead {
  border-bottom: 1px solid var(--line);
  padding: 20px 0 0;
}

.masthead-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 16px;
}

.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.logo span { color: var(--teal); }

.masthead-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--ink-soft);
}

.masthead-actions select {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--ink);
  font-size: 13px;
  cursor: pointer;
}

.masthead-actions button {
  font-family: 'Noto Sans JP', sans-serif;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  color: var(--ink);
  cursor: pointer;
  font-size: 13px;
}

.masthead-actions button:hover { border-color: var(--ink-faint); }

/* World clock strip */
.clock-strip {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--line);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
}

.clock-item {
  flex: 1;
  padding: 10px 0;
  border-right: 1px solid var(--line);
  text-align: center;
  color: var(--ink-soft);
}

.clock-item:last-child { border-right: none; }

.clock-item .city {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-size: 10px;
}

.clock-item .time {
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  margin-top: 2px;
}

/* Hero */
.hero {
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 34px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.hero p {
  color: var(--ink-soft);
  font-size: 15px;
  margin: 0;
  max-width: 480px;
}

/* Region tabs */
.tabs {
  display: flex;
  gap: 6px;
  padding: 18px 0;
}

.tab {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper-raised);
  cursor: pointer;
  color: var(--ink-soft);
}

.tab.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* Layout */
.layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  padding: 8px 0 60px;
}

@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
}

/* Day group */
.day-group { margin-bottom: 28px; }

.day-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}

/* Article card */
.article {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.article-thumb {
  width: 100%;
  max-height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 12px;
  background: var(--line);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.tag {
  font-size: 11px;
  font-family: 'IBM Plex Mono', monospace;
  padding: 3px 9px;
  border-radius: 5px;
  font-weight: 500;
}

.tag.teal { background: var(--teal-bg); color: var(--teal); }
.tag.amber { background: var(--amber-bg); color: var(--amber); }
.tag.blue { background: var(--blue-bg); color: var(--blue); }
.tag.coral { background: var(--coral-bg); color: var(--coral); }

.source {
  font-size: 12px;
  color: var(--ink-faint);
}

.article h3 {
  font-size: 17px;
  font-weight: 500;
  margin: 0 0 10px;
  font-family: 'Noto Sans JP', sans-serif;
}

.article ul {
  margin: 0 0 10px;
  padding-left: 20px;
  color: var(--ink-soft);
  font-size: 14px;
}

.article ul li { margin-bottom: 3px; }

.article-actions {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--ink-faint);
}

.article-actions button {
  background: none;
  border: none;
  color: var(--ink-faint);
  cursor: pointer;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0;
}

.article-actions button.active { color: var(--teal); }

/* Sidebar */
.sidebar h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  margin: 0 0 12px;
}

.sidebar-block {
  margin-bottom: 28px;
}

.category-item {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 8px;
}

.category-item p {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  font-size: 12px;
  color: var(--ink-faint);
  text-align: center;
}