:root {
  --bg: #0b1020;
  --panel: #121933;
  --panel-2: #192345;
  --text: #edf2ff;
  --muted: #a8b2d1;
  --accent: #4f8cff;
  --danger: #ff5f70;
  --success: #39c47a;
  --border: rgba(255,255,255,0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(135deg, #09111f, #111a35 55%, #0e1530);
  color: var(--text);
}
a { color: #fff; text-decoration: none; }
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card, .admin-card, .player-card, .note-box {
  background: rgba(18, 25, 51, 0.95);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0,0,0,.25);
}
.login-card {
  width: 100%;
  max-width: 420px;
  padding: 30px;
}
.login-card h1 { margin: 0 0 10px; }
.login-card p { margin: 0 0 20px; color: var(--muted); }
.login-form { display: grid; gap: 10px; }
.login-form label { font-size: 14px; color: var(--muted); }
.login-form input, .login-form select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0f1730;
  color: var(--text);
}
.primary-btn, .secondary-btn, .danger-btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  font-weight: bold;
}
.primary-btn { background: var(--accent); color: white; }
.secondary-btn { background: #33406d; color: white; }
.danger-btn { background: var(--danger); color: white; }
.alert-error, .alert-success {
  padding: 12px 14px;
  border-radius: 12px;
  margin-bottom: 16px;
}
.alert-error { background: rgba(255,95,112,.12); border: 1px solid rgba(255,95,112,.35); }
.alert-success { background: rgba(57,196,122,.12); border: 1px solid rgba(57,196,122,.35); }
.app-shell {
  display: grid;
  grid-template-columns: 360px 1fr;
  min-height: 100vh;
}
.sidebar {
  border-right: 1px solid var(--border);
  background: rgba(9, 15, 31, .92);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.brand h1 { margin: 0; font-size: 24px; }
.brand p, .user-box span, .channel-item small, .empty-state { color: var(--muted); }
.user-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  display: grid;
  gap: 4px;
}
.menu-links { display: flex; gap: 10px; flex-wrap: wrap; }
.menu-links a {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
}
.channel-list-title { font-weight: bold; margin-top: 8px; }
.channel-list-header {
  display: grid;
  gap: 10px;
}
.channel-filters {
  display: grid;
  gap: 10px;
}
.channel-search, .channel-group-filter {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0f1730;
  color: var(--text);
}
.channel-search::placeholder {
  color: var(--muted);
}
.channel-list-empty {
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  color: var(--muted);
  text-align: center;
  background: rgba(255,255,255,0.02);
}
.channel-list {
  overflow: auto;
  display: grid;
  gap: 10px;
  padding-right: 4px;
}
.channel-item {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 10px;
  align-items: center;
  text-align: left;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}
.channel-item.active { outline: 2px solid var(--accent); }
.channel-item img, .logo-placeholder {
  width: 54px;
  height: 54px;
  object-fit: contain;
  background: white;
  border-radius: 12px;
}
.logo-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0f1730;
  font-weight: bold;
}
.player-section { padding: 24px; display: grid; gap: 18px; }
.player-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.player-header h2 { margin: 0 0 6px; }
.player-header p { margin: 0; color: var(--muted); }
.player-card { padding: 12px; }
video {
  width: 100%;
  max-height: 72vh;
  background: #000;
  border-radius: 14px;
}
.note-box { padding: 14px 16px; color: var(--muted); }
.admin-wrapper { padding: 24px; }
.admin-topbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
}
.admin-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 18px;
}
.admin-card { padding: 20px; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--border); padding: 12px 10px; text-align: left; }
.action-row { display: flex; flex-wrap: wrap; gap: 8px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
@media (max-width: 980px) {
  .app-shell, .admin-grid { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--border); }
  .player-header, .admin-topbar { flex-direction: column; align-items: flex-start; }
}


.session-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 10, 0.82);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    padding: 24px;
}

.session-overlay-box {
    width: min(440px, 100%);
    background: #171717;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    box-shadow: 0 18px 50px rgba(0,0,0,0.4);
    padding: 28px 24px;
    text-align: center;
}

.session-overlay-box h3 {
    margin: 0 0 10px;
    color: #ffffff;
    font-size: 24px;
}

.session-overlay-box p {
    margin: 0;
    color: #d6d6d6;
    font-size: 16px;
    line-height: 1.5;
}