/* Altair — site-wide styles
   Mobile-first, dark neutral color scheme, Japanese typography */

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Base ──────────────────────────────────────────────────── */
:root {
  --bg: #1a1a2e;
  --bg-surface: #222240;
  --text: #e0e0e0;
  --text-muted: #999;
  --accent: #6ec6ff;
  --accent-hover: #90d4ff;
  --border: #333;
  --danger: #ff6b6b;
  --radius: 6px;
  --max-width: 720px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  padding: 1.5rem 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ── Typography ────────────────────────────────────────────── */
h1, h2, h3 {
  color: #fff;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

h1 { font-size: 1.75rem; margin-bottom: 1rem; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }

p {
  margin-bottom: 0.75rem;
}

a {
  color: var(--accent);
  text-decoration: none;
}

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

ul, ol {
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}

li {
  margin-bottom: 0.35rem;
}

/* ── Articles feed ─────────────────────────────────────────── */
[data-article] {
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
  display: block;
}

[data-article]:last-child {
  border-bottom: none;
}

[data-article][data-focused="true"] {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

[data-meta] {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

[data-meta] [data-favicon] {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  vertical-align: text-bottom;
}

[data-meta] [data-dot] {
  color: #555;
}

[data-headline] {
  font-size: 1.15rem;
  color: #fff;
  margin: 0.15rem 0 0.25rem;
  line-height: 1.35;
}

[data-headline] a {
  color: #fff;
}

[data-headline] a:hover {
  color: var(--accent-hover);
  text-decoration: none;
}

[data-summary] {
  margin-top: 0.3rem;
  margin-bottom: 0.4rem;
  color: #cfcfd8;
  font-size: 0.95rem;
}

[data-thumb] {
  float: right;
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 4px;
  margin: 0 0 0.4rem 0.8rem;
}

[data-tags] {
  list-style: none;
  padding: 0;
  margin: 0.3rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

[data-tag] {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: transparent;
}

[data-article] > [data-link] {
  font-size: 0.85rem;
  display: inline-block;
  margin-top: 0.25rem;
}

[data-empty-state] {
  color: var(--text-muted);
  padding: 2rem 0;
}

/* ── Density-specific rules ───────────────────────────────── */
[data-density="compact"] [data-article] {
  padding: 0.55rem 0;
}

[data-density="compact"] [data-article] [data-headline] {
  font-size: 1rem;
  line-height: 1.25;
  margin: 0.1rem 0 0.1rem;
}

[data-density="compact"] [data-article] > [data-link] {
  display: none;
}

[data-density="compact"] [data-article] [data-tags] {
  display: none;
}

/* ── Density toggle ───────────────────────────────────────── */
[data-density-toggle] {
  display: flex;
  gap: 0.35rem;
  justify-content: flex-end;
  margin: 0.5rem 0 0.75rem;
}

[data-density-toggle] button {
  padding: 0.3rem 0.6rem;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.8rem;
  min-height: 32px;
  cursor: pointer;
}

[data-density-toggle] button[data-active] {
  background: var(--accent);
  color: #0a1420;
  border-color: var(--accent);
}

/* ── Filter input ─────────────────────────────────────────── */
[data-filter-input] {
  margin: 0.25rem 0 1rem;
}

/* ── Japanese-specific rhythm ──────────────────────────────
   JA readers reward density (NHK/Yahoo Japan). Tighter rhythm
   means ~1.5× items per viewport vs EN at the same density. */
[lang="ja"] body {
  line-height: 1.65;
}

[lang="ja"] [data-article] {
  padding: 0.85rem 0;
}

[lang="ja"] [data-headline] {
  font-size: 1.05rem;
}

[lang="ja"] [data-meta] {
  font-size: 0.78rem;
}

/* ── Forms ─────────────────────────────────────────────────── */
form {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="email"],
input[type="url"],
input[type="search"],
input[type="number"],
textarea,
select {
  display: block;
  width: 100%;
  max-width: 100%;
  padding: 0.65rem 0.75rem;
  min-height: 44px;
  margin-top: 0.25rem;
  margin-bottom: 0.75rem;
  font-family: inherit;
  font-size: 16px; /* 16px prevents iOS zoom on focus */
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  min-height: 5rem;
  resize: vertical;
}

button[type="submit"],
button {
  padding: 0.75rem 1.25rem;
  min-height: 44px;
  font-family: inherit;
  font-size: 0.95rem;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
}

button:hover {
  background: var(--accent-hover);
}

/* ── Admin article list ────────────────────────────────────── */
[data-admin-article] {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

[data-admin-article] form {
  display: inline;
  margin-bottom: 0;
}

[data-admin-article] button {
  padding: 0.25rem 0.75rem;
  font-size: 0.85rem;
}

[data-validation-error] {
  color: var(--danger);
  margin-bottom: 0.75rem;
}

/* ── Navigation ───────────────────────────────────────────── */
[data-reader-nav],
[data-admin-nav],
[data-advertiser-nav] {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding: 0.75rem 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

[data-reader-nav] a,
[data-admin-nav] a,
[data-advertiser-nav] a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

[data-reader-nav] a:first-child,
[data-admin-nav] span:first-child {
  font-weight: bold;
  font-size: 1.15rem;
  color: #fff;
  margin-right: auto;
}

[data-admin-nav] form {
  display: inline;
  margin-bottom: 0;
}

[data-admin-nav] button {
  padding: 0.25rem 0.75rem;
  font-size: 0.85rem;
}

[data-admin-nav] [aria-current="page"] {
  font-weight: bold;
  text-decoration: underline;
}

/* ── Footer ───────────────────────────────────────────────── */
[data-footer] {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Mobile safety: prevent overflow on small screens ───────── */
img, video, iframe {
  max-width: 100%;
  height: auto;
}

/* Long URLs / unbroken strings wrap instead of overflowing viewport */
[data-summary],
[data-scan-url],
[data-clicked-url] {
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* Tables scroll horizontally rather than overflow */
table {
  display: block;
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (min-width: 600px) {
  body {
    padding: 2.5rem 2rem;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
}

/* ── Admin metrics + dashboard tile layout (TICKET-060) ────── */
/* Scoped narrowly to the three data-hooks added in TICKET-038,
   TICKET-050, and TICKET-059 so no other admin page is affected. */
[data-top-metrics],
[data-user-activity],
[data-dora-metrics] {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.25rem 1rem;
  margin: 0.5rem 0 1rem;
  padding: 0.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

[data-user-activity] h2 {
  grid-column: 1 / -1;
  margin: 0.75rem 0 0.25rem;
  font-size: 1.15rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 0.5rem;
}

[data-user-activity] h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

[data-top-metrics] p,
[data-user-activity] p,
[data-dora-metrics] p {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
}

[data-top-metrics] p:hover,
[data-user-activity] p:hover,
[data-dora-metrics] p:hover {
  background: var(--bg-surface);
}

[data-top-metrics] [data-label],
[data-user-activity] [data-label],
[data-dora-metrics] [data-label] {
  color: var(--text-muted);
}

[data-top-metrics] [data-value],
[data-user-activity] [data-value],
[data-dora-metrics] [data-value] {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

[data-dora-daily] thead {
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 1;
}

[data-dora-daily] th,
[data-dora-daily] td {
  padding: 0.25rem 0.75rem;
  text-align: left;
  font-variant-numeric: tabular-nums;
}

[data-dora-daily] tbody tr:nth-child(even) {
  background: var(--bg-surface);
}

@media (max-width: 640px) {
  [data-top-metrics] p,
  [data-user-activity] p,
  [data-dora-metrics] p {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }
}