:root {
  --bg: #0b0f19;
  --bg-soft: #0f172a;
  --panel: #1e293b;
  --border: #334155;
  --text: #f8fafc;
  --muted: #94a3b8;
  --label: #cbd5e1;
  --accent: #3b82f6;
  --accent-2: #8b5cf6;
  --danger: #ef4444;
  --ok: #22c55e;
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  --radius: 12px;
  --radius-lg: 20px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  background-image:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.05), transparent 40%),
    radial-gradient(circle at bottom left, rgba(139, 92, 246, 0.05), transparent 40%);
}

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

.layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: calc(100vh - 52px);
}

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 1.5rem;
}

.sidebar h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.sidebar nav a {
  display: block;
  padding: .55rem .75rem;
  border-radius: var(--radius);
  color: var(--text);
  margin-bottom: .25rem;
}

.sidebar nav a.active,
.sidebar nav a:hover {
  background: rgba(59, 130, 246, 0.12);
}

.content { padding: 1.5rem 2rem 2rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.page-title { margin: 0; font-size: 1.5rem; letter-spacing: -0.02em; }
.card-title { margin: 0 0 1.25rem; font-size: 1.1rem; }

.admin-form label { margin-bottom: 0; }

.form-section { margin-bottom: 1.5rem; }
.form-section:last-of-type { margin-bottom: 0; }

.form-section-title {
  margin: 0 0 .85rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

.form-row {
  display: grid;
  gap: 1rem;
}

.form-row--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-row--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-row--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.form-field {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}

.form-field > span {
  font-size: .85rem;
  font-weight: 600;
  color: var(--label);
}

.form-field input,
.form-field select {
  margin-top: 0;
}

.form-check {
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: .65rem;
  min-height: 3.1rem;
  padding-top: 1.5rem;
}

.form-check input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.form-actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  margin-top: .5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.data-table { margin-top: 0; }
.row-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.row-actions button { padding: .45rem .85rem; font-size: .875rem; }

[x-cloak] { display: none !important; }

.stat { font-size: 1.6rem; font-weight: 700; }
.muted { color: var(--muted); }

label {
  display: block;
  margin-bottom: .75rem;
  font-size: .9rem;
  color: var(--label);
}

input, textarea, select {
  width: 100%;
  margin-top: .35rem;
  padding: .75rem .85rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text);
  font-size: 1rem;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

button, .btn, .btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: white;
  border: 0;
  border-radius: var(--radius);
  padding: .75rem 1.1rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.2);
  transition: transform .1s, box-shadow .2s;
  display: inline-block;
  text-align: center;
}

button:hover, .btn:hover, .btn-primary:hover {
  box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.35);
}

button.secondary, .btn.secondary { background: #475569; box-shadow: none; }
button.danger { background: var(--danger); box-shadow: none; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .65rem; border-bottom: 1px solid var(--border); }
.error { color: var(--danger); }
.ok { color: var(--ok); }

.toolbar {
  display: flex;
  gap: .75rem;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  justify-content: space-between;
}

.toolbar-actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}

.section-title {
  margin: 0 0 .75rem;
  font-size: 1rem;
}

.pagination {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.import-result {
  margin: .75rem 0 0;
}

.channel-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: .75rem;
  align-items: end;
  margin: 1rem 0;
}

.channel-filters__reset {
  align-self: end;
}

.button-link {
  display: inline-flex;
  align-items: center;
  padding: .55rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: .9rem;
}

.button-link:hover {
  background: rgba(59, 130, 246, 0.12);
}

pre.preview {
  background: var(--bg-soft);
  padding: 1rem;
  border-radius: var(--radius);
  overflow: auto;
  max-height: 320px;
  font-size: .8rem;
}

/* Landing */
.landing-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.landing-wrap {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 2rem 1rem 1rem;
}

.hero-card {
  width: min(420px, 92vw);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow);
  animation: fadeIn .4s ease-out;
}

.logo-circle {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: white;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.3);
}

.hero-card h1 {
  margin: 0 0 .35rem;
  font-size: 1.65rem;
  letter-spacing: -0.03em;
}

.hero-card .subtitle {
  margin: 0 0 .5rem;
  color: var(--muted);
  font-size: .95rem;
}

.hero-card .tagline {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.5;
}

.hero-card .btn-primary {
  width: 100%;
  padding: 1rem;
}

.login-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.login-page .landing-wrap { flex: 1; }

.login-card { width: min(420px, 92vw); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.85);
  padding: .85rem 1.25rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .85rem;
  color: var(--muted);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: .35rem;
  flex-wrap: wrap;
}

.lang-label {
  margin-right: .35rem;
  color: var(--muted);
  font-size: .8rem;
}

.lang-switch button,
.lang-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--label);
  padding: .35rem .65rem;
  font-size: .78rem;
  font-weight: 600;
  border-radius: 999px;
  box-shadow: none;
  min-width: 2.5rem;
}

.lang-switch button.active,
.lang-switch button:hover,
.lang-btn.active,
.lang-btn:hover {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(59, 130, 246, 0.12);
}

/* Admin shell */
.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-shell > .layout {
  flex: 1;
}

.mobile-bar {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .85rem 1rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.mobile-bar .brand {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.menu-toggle {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .45rem .75rem;
  font-size: .85rem;
  box-shadow: none;
}

.sidebar nav {
  display: block;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .mobile-bar {
    display: flex;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 0 1rem 1rem;
  }

  .sidebar.collapsed nav {
    display: none;
  }

  .sidebar:not(.collapsed) nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .35rem;
  }

  .content {
    padding: 1rem;
  }

  .hero-card {
    padding: 2rem 1.25rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .lang-switch {
    width: 100%;
    justify-content: flex-start;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .form-row--2,
  .form-row--3,
  .form-row--4 {
    grid-template-columns: 1fr;
  }

  .form-check {
    min-height: auto;
    padding-top: 0;
  }

  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.input-with-action { display: flex; gap: 0.5rem; align-items: center; }
.input-with-action input { flex: 1; min-width: 0; }
.preview-card { margin-top: 0.75rem; padding: 0.75rem 1rem; background: #f8fafc; }
.data-table.compact td, .data-table.compact th { padding: 0.35rem 0.5rem; font-size: 0.85rem; }

.export-key-card { margin-bottom: 1rem; padding: 0.75rem 1rem; }