/* ===== GLOBAL ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #0a0b0f;
    --surface: #12141a;
    --surface2: #1a1d26;
    --surface3: #22263a;
    --border: rgba(255,255,255,0.07);
    --accent: #6366f1;
    --accent2: #8b5cf6;
    --green: #22c55e;
    --red: #ef4444;
    --yellow: #f59e0b;
    --text: #f1f5f9;
    --text2: #94a3b8;
    --text3: #475569;
    --font: 'Space Grotesk', system-ui, sans-serif;
    --mono: 'JetBrains Mono', monospace;
}

html, body { height: 100%; width: 100%; overflow: hidden; background: var(--bg); color: var(--text); font-family: var(--font); }

/* ===== LOBBY ===== */
.lobby-container {
    min-height: 100vh; overflow-y: auto;
    display: flex; flex-direction: column; align-items: center;
    padding: 2rem 1rem; position: relative;
}

.lobby-bg {
    position: fixed; inset: 0; z-index: 0;
    background: radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.10) 0%, transparent 50%),
                var(--bg);
}

.lobby-header {
    z-index: 1; text-align: center; margin-bottom: 3rem;
}

.logo {
    display: flex; align-items: center; gap: 0.6rem;
    justify-content: center; margin-bottom: 0.5rem;
}

.logo-icon {
    width: 42px; height: 42px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border-radius: 12px; display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; color: white; font-weight: 700;
}

.logo-text { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.02em; }
.lobby-tagline { color: var(--text2); font-size: 0.9rem; }

.lobby-main { z-index: 1; width: 100%; max-width: 900px; }

.lobby-title {
    font-size: 2.2rem; font-weight: 700; text-align: center;
    letter-spacing: -0.03em; margin-bottom: 0.5rem;
}

.lobby-subtitle {
    text-align: center; color: var(--text2); margin-bottom: 2.5rem; font-size: 1rem;
}

.rooms-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.2rem;
}

.room-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; padding: 1.5rem; cursor: pointer;
    transition: all 0.25s ease; position: relative; overflow: hidden;
}

.room-card:hover {
    border-color: rgba(99,102,241,0.4);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.3), 0 0 0 1px rgba(99,102,241,0.2);
}

.room-card-glow {
    position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at center, rgba(99,102,241,0.06) 0%, transparent 60%);
    opacity: 0; transition: opacity 0.3s;
}

.room-card:hover .room-card-glow { opacity: 1; }

.room-icon { font-size: 2.2rem; margin-bottom: 0.75rem; }

.room-name {
    font-size: 1.15rem; font-weight: 600; margin-bottom: 0.3rem;
}

.room-desc { color: var(--text2); font-size: 0.875rem; margin-bottom: 1rem; }

.room-footer {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: auto;
}

.participant-badge {
    display: flex; align-items: center; gap: 0.4rem;
    font-size: 0.8rem; color: var(--text2);
}

.dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--text3); transition: background 0.3s;
}

.join-arrow { color: var(--accent); font-size: 1.1rem; }

/* ===== JOIN PAGE ===== */
.join-container {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    position: relative; padding: 2rem;
}

.join-bg {
    position: fixed; inset: 0;
    background: radial-gradient(ellipse at center, rgba(99,102,241,0.10) 0%, var(--bg) 70%);
}

.join-card {
    z-index: 1; background: var(--surface); border: 1px solid var(--border);
    border-radius: 20px; padding: 2.5rem; width: 100%; max-width: 420px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}

.back-btn {
    display: inline-block; color: var(--text2); text-decoration: none;
    font-size: 0.875rem; margin-bottom: 2rem;
    transition: color 0.2s;
}
.back-btn:hover { color: var(--text); }

.join-room-info { text-align: center; margin-bottom: 2rem; }
.join-room-icon { font-size: 3rem; margin-bottom: 0.5rem; }
.join-room-info h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.3rem; }
.join-room-info p { color: var(--text2); font-size: 0.9rem; }

.form-label { display: block; font-size: 0.875rem; color: var(--text2); margin-bottom: 0.6rem; font-weight: 500; }

.name-input {
    width: 100%; background: var(--surface2); border: 1px solid var(--border);
    border-radius: 10px; padding: 0.85rem 1rem; font-size: 1rem;
    color: var(--text); font-family: var(--font); outline: none;
    transition: border-color 0.2s;
}
.name-input:focus { border-color: var(--accent); }

.input-hint { font-size: 0.78rem; color: var(--text3); margin-top: 0.4rem; margin-bottom: 1.2rem; }

.join-btn {
    width: 100%; background: linear-gradient(135deg, var(--accent), var(--accent2));
    border: none; border-radius: 10px; padding: 0.9rem 1rem;
    font-size: 1rem; font-weight: 600; color: white; cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 0.5rem;
    transition: opacity 0.2s, transform 0.15s; font-family: var(--font);
}
.join-btn:hover { opacity: 0.9; transform: translateY(-1px); }

.join-features {
    display: flex; gap: 0.75rem; justify-content: center; margin-top: 1.5rem; flex-wrap: wrap;
}

.feature-item {
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: 6px; padding: 0.3rem 0.7rem; font-size: 0.78rem; color: var(--text2);
}

/* ===== MEETING PAGE ===== */
.meeting-container {
    display: flex; height: 100vh; width: 100vw; overflow: hidden; background: var(--bg);
}

/* Sidebar */
.meeting-sidebar {
    width: 280px; min-width: 280px; background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column; z-index: 10;
    transition: width 0.3s, min-width 0.3s; overflow: hidden;
}

.meeting-sidebar.hidden { width: 0; min-width: 0; }

.sidebar-tabs {
    display: flex; border-bottom: 1px solid var(--border); flex-shrink: 0;
}

.tab-btn {
    flex: 1; background: none; border: none; padding: 0.85rem 0.5rem;
    color: var(--text2); font-size: 0.8rem; font-family: var(--font);
    cursor: pointer; transition: all 0.2s; position: relative;
}
.tab-btn.active { color: var(--text); background: var(--surface2); }
.tab-btn.has-notification::after {
    content: ''; position: absolute; top: 8px; right: 12px;
    width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
}

.tab-panel { display: none; flex-direction: column; flex: 1; overflow: hidden; }
.tab-panel.active { display: flex; }

.panel-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.85rem 1rem; font-size: 0.8rem; font-weight: 600; color: var(--text2);
    border-bottom: 1px solid var(--border); flex-shrink: 0;
}

.participant-count {
    background: var(--accent); color: white; border-radius: 99px;
    padding: 0.1rem 0.5rem; font-size: 0.72rem; font-weight: 700;
}

.participants-list { overflow-y: auto; flex: 1; padding: 0.5rem; }

.participant-item {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.6rem 0.5rem; border-radius: 10px; transition: background 0.15s;
}
.participant-item:hover { background: var(--surface2); }
.participant-item.mine { background: rgba(99,102,241,0.07); border: 1px solid rgba(99,102,241,0.15); }

.p-avatar {
    width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
    background: linear-gradient(135deg, var(--surface3), #2d3252);
    display: flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: 0.9rem;
}
.self-avatar { background: linear-gradient(135deg, var(--accent), var(--accent2)); }

.p-name { font-size: 0.85rem; font-weight: 500; display: block; }
.you-badge { font-size: 0.72rem; color: var(--accent); font-weight: 400; }
.p-status { display: flex; gap: 0.3rem; margin-top: 0.2rem; font-size: 0.8rem; }
.status-off { opacity: 0.4; }

/* Chat */
.chat-messages { flex: 1; overflow-y: auto; padding: 0.75rem; display: flex; flex-direction: column; gap: 0.6rem; }

.chat-welcome {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    flex: 1; gap: 0.5rem; color: var(--text3); font-size: 0.85rem; text-align: center;
}
.chat-welcome span { font-size: 2rem; }

.chat-msg { display: flex; flex-direction: column; max-width: 85%; }
.chat-msg.own { align-self: flex-end; align-items: flex-end; }
.chat-msg.other { align-self: flex-start; }

.msg-sender { font-size: 0.72rem; color: var(--text3); margin-bottom: 0.2rem; padding: 0 0.4rem; }
.chat-msg.own .msg-sender { color: var(--accent); }

.msg-bubble {
    background: var(--surface2); border-radius: 12px; padding: 0.5rem 0.75rem;
    font-size: 0.875rem; line-height: 1.4; word-break: break-word;
    border: 1px solid var(--border);
}
.chat-msg.own .msg-bubble { background: var(--accent); border-color: var(--accent); }

.msg-time { font-size: 0.68rem; color: var(--text3); padding: 0 0.4rem; margin-top: 0.15rem; }

.chat-input-area {
    display: flex; gap: 0.5rem; padding: 0.75rem; border-top: 1px solid var(--border); flex-shrink: 0;
}

.chat-input {
    flex: 1; background: var(--surface2); border: 1px solid var(--border);
    border-radius: 8px; padding: 0.55rem 0.75rem; font-size: 0.875rem;
    color: var(--text); font-family: var(--font); outline: none;
}
.chat-input:focus { border-color: var(--accent); }

.send-btn {
    background: var(--accent); border: none; border-radius: 8px;
    width: 36px; height: 36px; color: white; font-size: 1rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: opacity 0.2s;
}
.send-btn:hover { opacity: 0.85; }

/* Video Area */
.video-area {
    flex: 1; display: flex; flex-direction: column; overflow: hidden; position: relative;
}

.meeting-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.75rem 1.25rem; background: rgba(18,20,26,0.9);
    border-bottom: 1px solid var(--border); flex-shrink: 0; backdrop-filter: blur(10px);
}

.meeting-room-info { display: flex; align-items: center; gap: 0.5rem; }
.room-icon-sm { font-size: 1.2rem; }
.room-name-sm { font-weight: 600; font-size: 0.95rem; }

.rec-badge {
    background: rgba(239,68,68,0.15); color: var(--red);
    border: 1px solid rgba(239,68,68,0.3);
    border-radius: 4px; padding: 0.15rem 0.5rem; font-size: 0.72rem; font-weight: 600;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.header-right { display: flex; align-items: center; gap: 0.75rem; }
.user-badge {
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: 6px; padding: 0.25rem 0.75rem; font-size: 0.8rem; font-weight: 500;
}
.meeting-time { font-family: var(--mono); font-size: 0.85rem; color: var(--text2); }

/* Video Grid */
.video-grid {
    flex: 1; display: grid; overflow: hidden; padding: 0.75rem; gap: 0.75rem;
    background: #080a0e;
}

.grid-1 { grid-template-columns: 1fr; grid-template-rows: 1fr; }
.grid-2 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr; }
.grid-4 { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); }
.grid-many { grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(2, 1fr); }

.video-tile {
    background: var(--surface); border-radius: 12px; overflow: hidden;
    position: relative; border: 2px solid transparent; transition: border-color 0.2s;
}
.video-tile.local-tile { border-color: rgba(99,102,241,0.3); }

.video-tile video {
    width: 100%; height: 100%; object-fit: cover; display: block;
}

.video-tile-info {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 0.6rem 0.75rem;
    background: linear-gradient(transparent, rgba(0,0,0,0.75));
    display: flex; justify-content: space-between; align-items: flex-end;
}

.tile-name { font-size: 0.82rem; font-weight: 500; text-shadow: 0 1px 4px rgba(0,0,0,0.5); }

.video-off-overlay {
    position: absolute; inset: 0; background: var(--surface2);
    display: flex; align-items: center; justify-content: center; z-index: 2;
}

.avatar-circle {
    width: 72px; height: 72px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 700;
}

.mute-indicator {
    position: absolute; top: 0.5rem; right: 0.5rem;
    background: rgba(0,0,0,0.6); border-radius: 6px; padding: 0.2rem 0.4rem; font-size: 0.8rem; z-index: 3;
}

/* Controls Bar */
.controls-bar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.75rem 1.5rem; background: rgba(18,20,26,0.95);
    border-top: 1px solid var(--border); flex-shrink: 0; backdrop-filter: blur(10px);
}

.controls-center { display: flex; align-items: center; gap: 0.75rem; }
.controls-left, .controls-right { display: flex; align-items: center; min-width: 120px; }
.controls-right { justify-content: flex-end; }

.room-badge {
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: 8px; padding: 0.4rem 0.8rem; font-size: 0.8rem; color: var(--text2);
}

.ctrl-btn {
    display: flex; flex-direction: column; align-items: center; gap: 0.2rem;
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: 12px; padding: 0.6rem 1rem; cursor: pointer;
    transition: all 0.2s; color: var(--text); font-family: var(--font);
    min-width: 70px;
}
.ctrl-btn:hover { background: var(--surface3); border-color: rgba(255,255,255,0.15); }
.ctrl-btn.active { background: rgba(239,68,68,0.15); border-color: rgba(239,68,68,0.4); color: var(--red); }

.ctrl-icon { font-size: 1.3rem; }
.ctrl-label { font-size: 0.68rem; color: var(--text2); }

.danger-btn { }
.danger-btn:hover { background: rgba(239,68,68,0.2); border-color: var(--red); }

.ctrl-btn-sm {
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: 8px; padding: 0.6rem 0.75rem; cursor: pointer;
    color: var(--text2); font-size: 1.1rem; transition: all 0.2s;
}
.ctrl-btn-sm:hover { background: var(--surface3); color: var(--text); }

/* Connecting Overlay */
.connecting-overlay {
    position: fixed; inset: 0; background: rgba(10,11,15,0.9);
    display: flex; align-items: center; justify-content: center; z-index: 100;
    backdrop-filter: blur(8px);
}

.connecting-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 20px; padding: 3rem 2.5rem; text-align: center;
    box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}

.spinner {
    width: 48px; height: 48px; border: 3px solid var(--border);
    border-top-color: var(--accent); border-radius: 50%;
    animation: spin 0.8s linear infinite; margin: 0 auto 1.25rem;
}

@keyframes spin { to { transform: rotate(360deg); } }

.connecting-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 0.5rem; }
.connecting-card p { color: var(--text2); font-size: 0.875rem; }

/* Notifications */
.notification {
    position: fixed; bottom: 100px; left: 50%; transform: translateX(-50%) translateY(20px);
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 10px; padding: 0.65rem 1.2rem; font-size: 0.875rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3); z-index: 50;
    opacity: 0; transition: all 0.3s ease;
}
.notification.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Scrollbars */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface3); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }