*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: rgba(0, 0, 0, 0.08);
  --text: #14171f;
  --muted: #5b6272;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --danger: #dc2626;
  --radius: 10px;
  --shadow: 0 10px 30px -14px rgba(0, 0, 0, 0.25);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d12;
    --surface: #14171f;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f2f3f5;
    --muted: #9aa0ac;
    --shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
  }
}

html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Public tile grid ─────────────────────────────────────────────────── */

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 15px;
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--muted); padding: 4px 6px; border-radius: 6px; }
.breadcrumb a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.breadcrumb .current { color: var(--text); font-weight: 600; padding: 4px 6px; }
.breadcrumb .sep { color: var(--muted); opacity: 0.5; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  aspect-ratio: 1 / 1;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, var(--tile-color, var(--accent)) 0%, transparent 65%);
  opacity: 0.28;
  pointer-events: none;
}
.tile:hover, .tile:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  outline: none;
  border-color: var(--tile-color, var(--accent));
  text-decoration: none;
}
.tile:active { transform: translateY(-1px) scale(0.98); }
.tile .icon { font-size: 34px; line-height: 1; margin-bottom: auto; }
.tile .label { position: relative; z-index: 1; }

.empty { color: var(--muted); padding: 40px 4px; font-size: 15px; }

@media (max-width: 480px) {
  .grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 12px; }
  .tile { padding: 12px; border-radius: 14px; }
  .tile .icon { font-size: 26px; }
  .tile .label { font-size: 13px; }
}

/* ── Admin ─────────────────────────────────────────────────────────────── */

.admin-page { max-width: 900px; margin: 2.5rem auto; padding: 0 1.5rem 3rem; }
.admin-page-narrow { max-width: 420px; margin-top: 5rem; }

.admin-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.25rem; flex-wrap: wrap; gap: 0.75rem;
}
.admin-header h1 { font-size: 1.4rem; }
.admin-header-actions { display: flex; align-items: center; gap: 1rem; font-size: 0.9rem; }
.muted { color: var(--muted); }

.tile-tree { list-style: none; margin: 1.25rem 0 0; }
.tile-tree .tile-tree { margin-left: 1.5rem; border-left: 1px dashed var(--border); padding-left: 1rem; }

.tile-row {
  display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 0.6rem 0.9rem; margin: 0.4rem 0;
}
.tile-row-icon { font-size: 1.2rem; }
.tile-row-label { font-weight: 600; }
.tile-row-url {
  color: var(--muted); font-size: 0.85rem; overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap; max-width: 260px;
}
.tile-row-actions { margin-left: auto; display: flex; gap: 0.4rem; flex-wrap: wrap; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.3rem; }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
}
.form-group input[type="color"] {
  width: 100%; height: 42px; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 0.25rem; background: var(--surface);
}
.form-group input:focus, .form-group select:focus {
  outline: 2px solid var(--accent); outline-offset: 1px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.45rem 1rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); text-decoration: none; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.85; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg); text-decoration: none; }
.btn-sm { font-size: 0.8rem; padding: 0.25rem 0.6rem; }

.error-msg { color: var(--danger); font-size: 0.9rem; margin-bottom: 0.75rem; }