/* Alpha Planner v3.1 — Adaptive Theme */
:root {
  --bg: var(--tg-theme-bg-color, #0f0f1a);
  --text: var(--tg-theme-text-color, #f0f0f0);
  --hint: var(--tg-theme-hint-color, #8899bb);
  --link: var(--tg-theme-link-color, #6c5ce7);
  --btn-bg: var(--tg-theme-button-color, #6c5ce7);
  --btn-text: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg: var(--tg-theme-secondary-bg-color, #1a1a2e);
  --card-bg: var(--tg-theme-secondary-bg-color, #1e2235);
  --border: rgba(128,128,180,0.15);
  --danger: #ff6b6b;
  --success: #51cf66;
  --warning: #fcc419;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 2px 16px rgba(0,0,0,0.15);
  --glass: rgba(255,255,255,0.05);
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ── */
.header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
  background: var(--secondary-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky; top: 0; z-index: 10;
}
.header h1 { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; }
.header-actions { display: flex; gap: 6px; }
.btn-icon {
  background: var(--glass); border: none; font-size: 20px; cursor: pointer;
  padding: 6px 8px; border-radius: var(--radius-sm);
  transition: all var(--transition);
  color: var(--text);
}
.btn-icon:hover { background: var(--border); transform: scale(1.05); }

/* ── Tabs ── */
.tabs {
  display: flex; gap: 6px; padding: 12px 16px;
  background: var(--secondary-bg);
  overflow-x: auto; scrollbar-width: none;
  border-bottom: 1px solid var(--border);
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  flex: 1; padding: 10px 14px;
  background: var(--glass); border: 1px solid var(--border);
  color: var(--hint); border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: all var(--transition); white-space: nowrap;
  min-width: fit-content;
}
.tab:active { transform: scale(0.97); }
.tab.active {
  background: var(--btn-bg); color: var(--btn-text);
  border-color: var(--btn-bg);
  box-shadow: 0 4px 12px rgba(108,92,231,0.3);
}

/* ── Quick Add ── */
.quick-add {
  display: flex; gap: 8px; padding: 12px 16px;
  background: var(--secondary-bg);
  border-bottom: 1px solid var(--border);
}
.quick-add input {
  flex: 1; padding: 12px 16px;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-size: 15px; outline: none;
  transition: border-color var(--transition);
}
.quick-add input::placeholder { color: var(--hint); }
.quick-add input:focus { border-color: var(--btn-bg); box-shadow: 0 0 0 3px rgba(108,92,231,0.15); }
.btn-add {
  width: 48px; height: 48px;
  background: var(--btn-bg); border: none; border-radius: var(--radius);
  font-size: 20px; cursor: pointer; color: var(--btn-text);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  box-shadow: 0 4px 12px rgba(108,92,231,0.3);
}
.btn-add:active { transform: scale(0.93); }

/* ── Task List ── */
.task-list { padding: 8px 16px 80px; }

.task-card {
  background: var(--card-bg); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 8px;
  border-left: 4px solid var(--border);
  display: flex; align-items: flex-start; gap: 12px;
  cursor: pointer; transition: all var(--transition);
  box-shadow: var(--shadow);
}
.task-card:active { transform: scale(0.99); }
.task-card.priority-1 { border-left-color: var(--danger); }
.task-card.priority-2 { border-left-color: #ff922b; }
.task-card.priority-3 { border-left-color: var(--warning); }
.task-card.priority-4 { border-left-color: var(--success); }
.task-card.done { opacity: 0.5; }
.task-card.done .task-title { text-decoration: line-through; }

.task-check {
  width: 24px; height: 24px; min-width: 24px;
  border: 2px solid var(--hint); border-radius: 50%;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all var(--transition); margin-top: 2px;
}
.task-check.checked {
  background: var(--success); border-color: var(--success); color: #fff;
}

.task-info { flex: 1; min-width: 0; }
.task-title { font-size: 15px; font-weight: 500; word-break: break-word; color: var(--text); }
.task-meta {
  display: flex; gap: 8px; margin-top: 6px;
  font-size: 12px; color: var(--hint); flex-wrap: wrap;
}
.task-meta span { display: flex; align-items: center; gap: 3px; }

/* ── Stats Bar ── */
.stats-bar {
  display: flex; justify-content: space-around;
  padding: 10px 16px;
  background: var(--secondary-bg);
  border-top: 1px solid var(--border);
  position: fixed; bottom: 0; left: 0; right: 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 10;
}
.stat-item { text-align: center; font-size: 13px; font-weight: 600; color: var(--text); }
.stat-item span { font-size: 11px; color: var(--hint); }

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  z-index: 100; display: none;
  align-items: flex-end; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal {
  background: var(--card-bg); border-radius: 20px 20px 0 0;
  width: 100%; max-width: 480px; max-height: 90vh;
  overflow-y: auto; padding: 20px;
  animation: slideUp 0.3s ease;
  box-shadow: 0 -8px 32px rgba(0,0,0,0.3);
}
@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.modal-header h2 { font-size: 18px; font-weight: 700; color: var(--text); }
.modal-close {
  background: var(--glass); border: none; font-size: 20px;
  width: 32px; height: 32px; border-radius: 50%; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--hint); transition: all var(--transition);
}
.modal-close:hover { background: var(--border); }

/* ── Inputs ── */
.input, select {
  width: 100%; padding: 12px 16px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 15px; outline: none;
  transition: all var(--transition);
}
.input::placeholder { color: var(--hint); }
.input:focus, select:focus {
  border-color: var(--btn-bg);
  box-shadow: 0 0 0 3px rgba(108,92,231,0.15);
}

/* ── Buttons ── */
.btn {
  padding: 12px 20px; border: none; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all var(--transition);
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--btn-bg); color: var(--btn-text);
  box-shadow: 0 4px 12px rgba(108,92,231,0.3);
}
.btn-secondary { background: var(--glass); color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 8px 14px; font-size: 13px; }

/* ── Empty State ── */
.empty-state {
  text-align: center; padding: 40px 20px;
  color: var(--hint); font-size: 14px;
}

/* ── Conference Panel ── */
.conf-panel { display: none; flex-direction: column; flex: 1; }
.conf-lobby-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px; border-bottom: 1px solid var(--border);
}
.conf-lobby-header h2 { font-size: 18px; font-weight: 700; color: var(--text); }
.conf-rooms-list { flex: 1; overflow-y: auto; padding: 8px 16px; }
.conf-room-card {
  background: var(--card-bg); border-radius: var(--radius);
  padding: 14px; margin-bottom: 8px; display: flex;
  align-items: center; justify-content: space-between;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.conf-room-card:active { transform: scale(0.99); }
.conf-room-name { font-weight: 600; font-size: 15px; color: var(--text); }
.conf-room-meta { font-size: 12px; color: var(--hint); margin-top: 4px; }
.conf-join-row {
  display: flex; gap: 8px; padding: 12px 16px;
  border-top: 1px solid var(--border);
}

/* ── Conference Room ── */
.conf-room-header {
  display: flex; align-items: center; padding: 10px 16px; gap: 8px;
  background: var(--secondary-bg); border-bottom: 1px solid var(--border);
}
.btn-icon-back {
  background: var(--glass); border: none; font-size: 18px; cursor: pointer;
  padding: 6px 10px; border-radius: var(--radius-sm);
  color: var(--text); transition: all var(--transition);
}
.btn-icon-sm {
  background: var(--glass); border: none; font-size: 16px; cursor: pointer;
  padding: 4px 8px; border-radius: 8px; color: var(--text);
  transition: all var(--transition);
}
.btn-icon-sm:hover { background: var(--border); }

/* ── Video Grid ── */
.video-grid {
  flex: 1; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 8px; padding: 8px; overflow: auto;
  background: var(--bg);
}
.video-container {
  position: relative; background: var(--card-bg);
  border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.video-container video {
  width: 100%; height: 100%; object-fit: cover;
}
.video-label {
  position: absolute; bottom: 6px; left: 6px;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
  padding: 4px 10px; border-radius: 8px;
  font-size: 12px; color: #fff;
}

/* ── Conference Controls ── */
.conf-controls {
  display: flex; justify-content: center; gap: 12px;
  padding: 12px 16px; background: var(--secondary-bg);
  border-top: 1px solid var(--border);
}
.ctrl-btn {
  width: 48px; height: 48px; border-radius: 50%;
  border: none; font-size: 20px; cursor: pointer;
  background: var(--glass); color: var(--text);
  transition: all var(--transition);
  position: relative;
}
.ctrl-btn:hover { background: var(--border); transform: scale(1.05); }
.ctrl-btn.muted { background: var(--danger); color: #fff; }
.ctrl-btn.danger { background: var(--danger); color: #fff; }

/* ── Sidebar ── */
.conf-sidebar {
  position: absolute; top: 0; right: 0;
  width: 300px; height: 100%;
  background: var(--card-bg);
  border-left: 1px solid var(--border);
  display: none; flex-direction: column; z-index: 20;
  box-shadow: -4px 0 24px rgba(0,0,0,0.2);
}
.conf-sidebar.show { display: flex; }
.sidebar-header {
  display: flex; align-items: center; padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 600; color: var(--text);
}

/* ── Chat ── */
.conf-chat-messages { flex: 1; overflow-y: auto; padding: 8px; }
.conf-chat-input {
  display: flex; gap: 8px; padding: 8px;
  border-top: 1px solid var(--border);
}

/* ── Create Modal ── */
.conf-create-modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
  z-index: 100; display: none;
  align-items: center; justify-content: center;
}
.conf-create-modal.show, .conf-create-modal[style*="display: flex"] { display: flex; }

.modal-body { margin-bottom: 16px; }
.modal-footer { display: flex; gap: 8px; justify-content: flex-end; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.task-card { animation: fadeIn 0.3s ease; }

/* ── Mobile ── */
@media (max-width: 600px) {
  .header { padding: 12px 16px; }
  .header h1 { font-size: 16px; }
  .tabs { padding: 10px 12px; gap: 4px; }
  .tab { padding: 8px 10px; font-size: 12px; }
  .conf-sidebar { width: 100%; }
  .video-grid { grid-template-columns: 1fr; }
}