:root {
    --bg-primary:    #0f172a;
    --bg-secondary:  #1e293b;
    --bg-tertiary:   #334155;
    --bg-card:       #1e293b;
    --bg-card-hover: #263449;
    --border-color:  rgba(99,120,155,0.25);
    --border-accent: rgba(16,185,129,0.3);
    --text-primary:  #f1f5f9;
    --text-secondary:#94a3b8;
    --text-muted:    #64748b;
    --accent-green:  #10b981;
    --accent-blue:   #3b82f6;
    --accent-yellow: #f59e0b;
    --accent-red:    #ef4444;
    --accent-purple: #a78bfa;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg-primary); color: var(--text-primary); min-height: 100vh; font-size: 14px; }
a { color: inherit; text-decoration: none; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 3px; }

/* Layout */
.app-layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; flex-shrink: 0; background: var(--bg-secondary); border-right: 0.5px solid var(--border-color); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; }
.main-content { flex: 1; margin-left: 220px; display: flex; flex-direction: column; min-height: 100vh; }
.topbar { height: 56px; background: var(--bg-secondary); border-bottom: 0.5px solid var(--border-color); display: flex; align-items: center; padding: 0 24px; gap: 12px; position: sticky; top: 0; z-index: 50; }
@keyframes presence-pulse {
  0%,100%{opacity:1} 50%{opacity:0.4}
}
.presence-dot {
  width:10px;height:10px;border-radius:50%;flex-shrink:0;
  border:2px solid var(--bg-secondary);
}
.presence-dot.online  { background:#22c55e; }
.presence-dot.away    { background:#f59e0b; animation:presence-pulse 2s infinite; }
.presence-dot.offline { background:#6b7280; }

@keyframes typing-dot {
  0%,60%,100%{opacity:0.2;transform:scale(1)}
  30%{opacity:1;transform:scale(1.3)}
}
@keyframes menu-flash {
  0%,100%{background:transparent}
  50%{background:rgba(59,130,246,0.2)}
}
@keyframes menu-flash-red {
  0%,100%{background:transparent}
  50%{background:rgba(239,68,68,0.2)}
}
.nav-item.flashing     { animation:menu-flash     1s ease infinite; }
.nav-item.flashing-red { animation:menu-flash-red 1s ease infinite; }

@keyframes bell-shake {
  0%,100%{transform:rotate(0)}
  10%,30%,50%,70%,90%{transform:rotate(-12deg)}
  20%,40%,60%,80%{transform:rotate(12deg)}
}
@keyframes bell-pulse {
  0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,0.7)}
  50%{box-shadow:0 0 0 8px rgba(239,68,68,0)}
}
.bell-btn { position:relative; background:none; border:none; cursor:pointer; padding:6px 8px; border-radius:8px; color:var(--text-secondary); font-size:18px; transition:background 0.15s; }
.bell-btn:hover { background:var(--bg-tertiary); }
.bell-btn.has-notif { color:var(--accent-yellow); animation:bell-shake 0.6s ease; }
.bell-badge { position:absolute; top:2px; right:2px; background:var(--accent-red); color:#fff; border-radius:10px; font-size:9px; font-weight:700; padding:1px 5px; min-width:16px; text-align:center; animation:bell-pulse 1.5s infinite; }
.notif-dropdown { position:absolute; top:52px; right:12px; width:360px; background:var(--bg-secondary); border:0.5px solid var(--border-color); border-radius:12px; box-shadow:0 8px 32px rgba(0,0,0,0.4); z-index:1000; overflow:hidden; display:none; }
.notif-dropdown.open { display:block; }
.notif-item { padding:12px 16px; border-bottom:0.5px solid var(--border-color); cursor:pointer; transition:background 0.15s; }
.notif-item:hover { background:var(--bg-tertiary); }
.notif-item.unread { border-left:3px solid var(--accent-blue); background:rgba(59,130,246,0.05); }
.notif-item.priority-high { border-left-color:var(--accent-red); }
.notif-item.priority-medium { border-left-color:var(--accent-yellow); }
.page-container { padding: 24px; max-width: 1200px; margin: 0 auto; width: 100%; }
.card-channel { background: var(--bg-card); border: 0.5px solid var(--border-accent); border-radius: var(--radius-xl); padding: 20px; margin-bottom: 20px; position: relative; overflow: hidden; box-shadow: none; }

/* Sidebar */
.sidebar-logo { padding: 20px 20px 16px; border-bottom: 0.5px solid var(--border-color); }
.sidebar-logo span { font-size: 16px; font-weight: 700; color: var(--accent-green); }
.sidebar-logo small { display: block; font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.nav-section { padding: 12px 12px 4px; font-size: 10px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 9px 12px; margin: 1px 8px; border-radius: var(--radius-sm); color: var(--text-secondary); cursor: pointer; transition: all 0.15s; font-size: 13px; }
.nav-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.nav-item.active { background: rgba(16,185,129,0.15); color: var(--accent-green); }
.nav-item i { width: 16px; text-align: center; font-size: 13px; }
.sidebar-footer { margin-top: auto; padding: 16px; border-top: 0.5px solid var(--border-color); }

/* Cards */
.card { background: var(--bg-card); border: 0.5px solid var(--border-color); border-radius: var(--radius-lg); padding: 20px; }
.card-channel { background: linear-gradient(135deg, rgba(16,185,129,0.08) 0%, var(--bg-card) 60%); border: 0.5px solid var(--border-accent); border-radius: var(--radius-xl); padding: 20px; margin-bottom: 12px; position: relative; overflow: hidden; }
.card-channel::before { content:''; position:absolute; top:-20px; right:-20px; width:80px; height:80px; background:rgba(16,185,129,0.06); border-radius:50%; }
.card-channel.offline { background: linear-gradient(135deg, rgba(239,68,68,0.05) 0%, var(--bg-card) 60%); border-color: rgba(239,68,68,0.2); }
.card-channel.offline::before { background: rgba(239,68,68,0.05); }
.card-channel.fallback { background: linear-gradient(135deg, rgba(245,158,11,0.08) 0%, var(--bg-card) 60%); border-color: rgba(245,158,11,0.25); }

/* Metric cards */
.metric-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin: 14px 0; }
.metric-card { background: rgba(15,23,42,0.6); border: 0.5px solid var(--border-color); border-radius: var(--radius-md); padding: 12px 14px; text-align: center; }
.metric-val { font-size: 20px; font-weight: 600; }
.metric-lbl { font-size: 11px; color: var(--text-muted); margin-top: 3px; }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 500; }
.badge-hls     { background: rgba(59,130,246,0.15);  color: #60a5fa; border: 0.5px solid rgba(59,130,246,0.3); }
.badge-rtmp    { background: rgba(249,115,22,0.15);  color: #fb923c; border: 0.5px solid rgba(249,115,22,0.3); }
.badge-srt     { background: rgba(16,185,129,0.15);  color: #34d399; border: 0.5px solid rgba(16,185,129,0.3); }
.badge-flv     { background: rgba(168,85,247,0.15);  color: #c084fc; border: 0.5px solid rgba(168,85,247,0.3); }
.badge-fmp4    { background: rgba(236,72,153,0.15);  color: #f472b6; border: 0.5px solid rgba(236,72,153,0.3); }
.badge-unknown { background: rgba(100,116,139,0.15); color: #94a3b8; border: 0.5px solid rgba(100,116,139,0.3); }
.badge-online  { background: rgba(16,185,129,0.15); color: #34d399; border: 0.5px solid rgba(16,185,129,0.3); }
.badge-offline { background: rgba(239,68,68,0.12); color: #f87171; border: 0.5px solid rgba(239,68,68,0.25); }
.badge-fallback{ background: rgba(245,158,11,0.12); color: #fbbf24; border: 0.5px solid rgba(245,158,11,0.25); }
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; display: inline-block; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius-sm); border: 0.5px solid var(--border-color); background: transparent; color: var(--text-primary); font-size: 12px; cursor: pointer; transition: all 0.15s; white-space: nowrap; }
.btn:hover { background: var(--bg-tertiary); border-color: rgba(148,163,184,0.4); }
.btn:active { transform: scale(0.97); }
.btn-sm { padding: 4px 10px; font-size: 11px; }
.btn-primary { background: var(--accent-green); border-color: var(--accent-green); color: #fff; }
.btn-primary:hover { background: #0da271; border-color: #0da271; }
.btn-danger { border-color: rgba(239,68,68,0.4); color: var(--accent-red); }
.btn-danger:hover { background: rgba(239,68,68,0.1); }
.btn-warning { border-color: rgba(245,158,11,0.4); color: var(--accent-yellow); }
.btn-warning:hover { background: rgba(245,158,11,0.1); }

/* Page header */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.page-title { font-size: 20px; font-weight: 600; color: var(--text-primary); }
.page-subtitle { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* Channel icon */
.ch-icon { width: 44px; height: 44px; border-radius: var(--radius-md); background: linear-gradient(135deg, var(--accent-green), #059669); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; flex-shrink: 0; position:relative; overflow:visible; }
.ch-icon.offline { background: linear-gradient(135deg, #475569, #334155); }
.ch-icon.fallback { background: linear-gradient(135deg, var(--accent-yellow), #d97706); }
.ch-icon.pull { background: linear-gradient(135deg, #ec4899, #be185d); }
.ch-icon.pull .signal-ring { border-color: #ec4899; }
@keyframes signal-ring {
  0%   { transform: scale(1);   opacity: 0.7; }
  100% { transform: scale(2.2); opacity: 0; }
}
.ch-icon .signal-ring { position:absolute; width:44px; height:44px; border-radius:var(--radius-md); border:2px solid var(--accent-green); animation:signal-ring 1.8s ease-out infinite; top:0; left:0; pointer-events:none; }
.ch-icon .signal-ring:nth-child(2) { animation-delay:-1.2s; }
.ch-icon .signal-ring:nth-child(3) { animation-delay:-0.6s; }
.ch-icon.offline .signal-ring { display:none; }
.ch-icon.fallback .signal-ring { border-color: var(--accent-yellow); }
.ch-icon.srt .signal-ring { border-color: #a855f7; }
.ch-icon.srt { background: linear-gradient(135deg, #7c3aed, #6d28d9); }

/* Tabs */
.ch-tabs { display: flex; gap: 3px; margin: 14px 0 12px; padding: 3px; background: rgba(15,23,42,0.5); border-radius: var(--radius-sm); width: fit-content; }
.ch-tab { padding: 5px 14px; border-radius: 6px; font-size: 12px; cursor: pointer; border: none; background: transparent; color: var(--text-muted); transition: all 0.15s; }
.ch-tab.active { background: var(--bg-tertiary); color: var(--text-primary); }

/* Client block */
.client-block { background: rgba(15,23,42,0.5); border: 0.5px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: 6px; overflow: hidden; transition: border-color 0.15s; }
.client-block:hover { border-color: rgba(148,163,184,0.3); }
.client-hdr { display: flex; align-items: center; gap: 10px; padding: 10px 14px; }
.client-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.client-dot.on { background: var(--accent-green); box-shadow: 0 0 6px rgba(16,185,129,0.5); }
.client-dot.off { background: var(--text-muted); }

/* Viewer table */
.viewer-header { display: grid; grid-template-columns: 55px 55px 70px 115px 100px 85px 95px 95px 70px 32px; gap: 4px; padding: 5px 14px; font-size: 10px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; background: rgba(15,23,42,0.6); }
.viewer-row { display: grid; grid-template-columns: 55px 55px 70px 115px 60px 100px 85px 95px 70px 32px; gap: 4px; align-items: center; padding: 7px 14px; border-top: 0.5px solid var(--border-color); font-size: 11px; color: var(--text-secondary); }
.viewer-row:hover { background: rgba(255,255,255,0.02); }

.cs-trigger{display:flex;align-items:center;gap:8px;padding:8px 12px;border:0.5px solid var(--border-color);border-radius:6px;cursor:pointer;background:var(--bg-secondary);color:var(--text-primary);user-select:none;font-size:13px;}
.cs-trigger:hover{border-color:var(--accent-blue);}
.cs-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:9999;border:0.5px solid var(--border-color);border-radius:8px;background:var(--bg-primary,#0f172a);box-shadow:0 8px 24px rgba(0,0,0,0.4);}
.cs-search-box{padding:8px;}
.cs-search-box input{width:100%;box-sizing:border-box;font-size:12px;padding:6px 10px;border:0.5px solid var(--border-color);border-radius:6px;background:var(--bg-secondary);color:var(--text-primary);}
.cs-list{max-height:200px;overflow-y:auto;}
.cs-option{display:flex;align-items:center;gap:10px;padding:7px 12px;cursor:pointer;font-size:13px;color:var(--text-primary);}
.cs-option:hover{background:var(--bg-secondary);}
.cs-option img{width:20px;height:14px;border-radius:2px;object-fit:cover;flex-shrink:0;}
.cs-flag{width:20px;height:14px;border-radius:2px;object-fit:cover;flex-shrink:0;}

.proto-badge { background: var(--bg-tertiary); padding: 1px 6px; border-radius: 4px; font-size: 10px; font-family: monospace; }

/* Forms */
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.form-input { width: 100%; padding: 8px 10px; background: rgba(15,23,42,0.6); border: 0.5px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); font-size: 13px; transition: border-color 0.15s; outline: none; }
.form-input:focus { border-color: var(--accent-green); }
.form-input option { background: var(--bg-secondary); }

/* Modal */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 1000; align-items: center; justify-content: center; }
.modal-overlay.active { display: flex; }
.modal { background: var(--bg-secondary); border: 0.5px solid var(--border-color); border-radius: var(--radius-xl); width: 90%; max-width: 520px; max-height: 90vh; overflow-y: auto; }
.modal-header { padding: 20px 24px 0; display: flex; align-items: center; justify-content: space-between; }
.modal-body { padding: 16px 24px; }
.modal-footer { padding: 0 24px 20px; display: flex; justify-content: flex-end; gap: 8px; }

/* Toast */
#toastContainer { position: fixed; bottom: 24px; right: 24px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 12px 18px; border-radius: var(--radius-md); color: #fff; font-size: 13px; display: flex; align-items: center; gap: 8px; animation: slideIn 0.2s ease; max-width: 320px; }
.toast-success { background: rgba(16,185,129,0.9); }
.toast-error   { background: rgba(239,68,68,0.9); }
.toast-info    { background: rgba(59,130,246,0.9); }
@keyframes slideIn { from { opacity:0; transform: translateY(10px); } to { opacity:1; transform: translateY(0); } }

/* Table */
.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { padding: 10px 14px; text-align: left; font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 0.5px solid var(--border-color); }
td { padding: 12px 14px; border-bottom: 0.5px solid rgba(99,120,155,0.1); vertical-align: middle; }
tr:hover td { background: rgba(255,255,255,0.02); }

/* Misc */
.sep { border-top: 0.5px solid var(--border-color); margin: 14px 0; }
.arrow { display: inline-block; transition: transform 0.2s; font-size: 10px; color: var(--text-muted); }
.arrow.open { transform: rotate(90deg); }
code { font-family: monospace; font-size: 12px; background: rgba(15,23,42,0.6); padding: 2px 6px; border-radius: 4px; color: var(--accent-green); }