@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Syne:wght@400;700;800&display=swap');

/* ── CSS Variables : Dark（デフォルト） ────────────────────── */
:root {
  --bg:       #0a0a0f;
  --surface:  #12121a;
  --surface2: #1a1a26;
  --border:   #2a2a3d;
  --accent:   #00e5ff;
  --accent2:  #7c3aed;
  --text:     #e2e2f0;
  --text-muted: #6b6b8a;
  --success:  #00ff88;
  --danger:   #ff4466;

  --grid-line: rgba(0,229,255,0.03);
  --header-bg: rgba(10,10,15,0.8);
  --theme-transition: background 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

/* ── CSS Variables : Light ─────────────────────────────────── */
[data-theme="light"] {
  --bg:       #f0f4f8;
  --surface:  #ffffff;
  --surface2: #e8edf3;
  --border:   #c8d3e0;
  --accent:   #0099bb;
  --accent2:  #6d28d9;
  --text:     #1a1a2e;
  --text-muted: #6b7a8d;
  --success:  #00994d;
  --danger:   #cc2244;

  --grid-line: rgba(0,153,187,0.06);
  --header-bg: rgba(240,244,248,0.85);
}

/* ── Transition（テーマ切り替え時に滑らかに） ──────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  transition: var(--theme-transition);
}

/* ── Base ──────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  min-height: 100vh;
}

/* Grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
  transition: none; /* グリッドはtransition不要 */
}

.main-wrapper {
  position: relative;
  z-index: 1;
}

/* ── Header ────────────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo .dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
  transition: background 0.3s;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

/* ── Theme Toggle Button ───────────────────────────────────── */
.theme-toggle {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: all 0.2s;
  white-space: nowrap;
}
.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.theme-toggle .toggle-icon {
  font-size: 0.9rem;
  transition: transform 0.4s ease;
}
.theme-toggle:hover .toggle-icon {
  transform: rotate(20deg);
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn-accent {
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  font-family: 'Syne', sans-serif;
  letter-spacing: 0.02em;
  transition: all 0.2s;
}
[data-theme="light"] .btn-accent { color: #fff; }

.btn-accent:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,229,255,0.3);
}

.btn-outline-accent {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  transition: all 0.2s;
}
.btn-outline-accent:hover {
  background: rgba(0,153,187,0.1);
  color: var(--accent);
}

.btn-ghost {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Form ──────────────────────────────────────────────────── */
.form-control-dark {
  background: var(--surface2) !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
  border-radius: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.3s, color 0.3s;
}
.form-control-dark:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px rgba(0,229,255,0.1) !important;
  outline: none;
}
.form-control-dark::placeholder { color: var(--text-muted); }

.form-label-dark {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 0.5rem;
}

/* ── Stats ─────────────────────────────────────────────────── */
.filter-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: 'JetBrains Mono', monospace;
}

/* ── Alert ─────────────────────────────────────────────────── */
.alert-dark {
  background: rgba(255,68,102,0.1);
  border: 1px solid rgba(255,68,102,0.3);
  color: var(--danger);
  border-radius: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}

/* ── Empty state ───────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 1rem;
  opacity: 0.3;
}

/* ── Tool Navigation ───────────────────────────────────────── */
.tool-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.tool-nav-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}

.tool-nav-item:hover {
  color: var(--accent);
  border-color: var(--border);
  background: var(--surface2);
}

.tool-nav-item.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(0,229,255,0.06);
}

[data-theme="light"] .tool-nav-item.active {
  background: rgba(0,153,187,0.08);
}

/* ── Animation ─────────────────────────────────────────────── */
.fade-in { animation: fadeIn 0.4s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════════════════════════════
   Dashboard (index.php) 用スタイル
   ════════════════════════════════════════════════════════════ */

/* ── Hero ──────────────────────────────────────────────────── */
.dash-hero {
  padding: 4rem 0 2.5rem;
  text-align: center;
}
.dash-hero .eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.dash-hero h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 1rem;
}
.dash-hero h1 .grad {
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.dash-hero p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Dashboard stat row ────────────────────────────────────── */
.dash-stats {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin: 2rem auto 0;
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  max-width: 600px;
}
.dash-stats .stat-item { text-align: center; }

/* ── Tool grid ─────────────────────────────────────────────── */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin: 3rem 0;
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  text-decoration: none;
  color: var(--text);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% -20%, rgba(0,229,255,0.10), transparent 55%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(0,229,255,0.12);
}
.tool-card:hover::before { opacity: 1; }
[data-theme="light"] .tool-card:hover { box-shadow: 0 12px 40px rgba(0,153,187,0.14); }

.tool-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  color: var(--accent);
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.18);
  margin-bottom: 1.25rem;
}
[data-theme="light"] .tool-card-icon {
  background: rgba(0,153,187,0.08);
  border-color: rgba(0,153,187,0.2);
}

.tool-card-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.tool-card-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
.tool-card-desc {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
  flex: 1;
}
.tool-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.tool-card-cta i { transition: transform 0.2s ease; }
.tool-card:hover .tool-card-cta i { transform: translateX(4px); }

/* ── Tag chips on card ─────────────────────────────────────── */
.tool-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}
.tool-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 7px;
}

/* ── Footer ────────────────────────────────────────────────── */
.dash-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

/* ── Staggered card reveal ─────────────────────────────────── */
.tool-grid .tool-card { opacity: 0; animation: fadeIn 0.5s ease forwards; }
.tool-grid .tool-card:nth-child(1) { animation-delay: 0.05s; }
.tool-grid .tool-card:nth-child(2) { animation-delay: 0.12s; }
.tool-grid .tool-card:nth-child(3) { animation-delay: 0.19s; }
.tool-grid .tool-card:nth-child(4) { animation-delay: 0.26s; }
.tool-grid .tool-card:nth-child(5) { animation-delay: 0.33s; }
.tool-grid .tool-card:nth-child(6) { animation-delay: 0.40s; }