/* 
   GridStream - Formula 1 Dedicated Dark Theme
   High-octane Racing Red (#e10600), carbon layouts, and frosted glass.
*/

:root {
    --bg-pure: #090b11;
    --bg-card: rgba(18, 22, 33, 0.75);
    --bg-card-hover: rgba(26, 31, 46, 0.9);
    --bg-header: rgba(11, 14, 21, 0.85);
    --border-color: rgba(255, 255, 255, 0.07);
    --border-accent: rgba(225, 6, 0, 0.25);
    
    --primary: #e10600; /* F1 Racing Red */
    --primary-glow: rgba(225, 6, 0, 0.25);
    --secondary: #ff7675; /* Soft Coral Red */
    --secondary-glow: rgba(255, 118, 117, 0.2);
    --accent: #00f2fe; /* Cyber Track Cyan */
    --accent-glow: rgba(0, 242, 254, 0.2);
    
    --text-main: #f1f3f9;
    --text-muted: #94a3b8;
    --text-inactive: #475569;
    
    --sidebar-width: 380px;
    --header-height: 72px;
    --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --glass-blur: blur(14px);
}

/* Reset and Scrollbars */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.hidden {
    display: none !important;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background: radial-gradient(circle at 50% 0%, rgba(225, 6, 0, 0.09) 0%, rgba(9, 11, 17, 0.05) 60%, #090b11 100%), #090b11;
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
    box-shadow: 0 0 8px var(--primary-glow);
}

/* Typography */
h1, h2, h3, .stream-title, .stat-res-badge {
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.3px;
}

/* Header */
.app-header {
    height: var(--header-height);
    background-color: var(--bg-header);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 40%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-logo h1 span {
    background: linear-gradient(135deg, var(--primary) 0%, #ff5252 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-logo p {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-top: -1px;
}

.header-icon {
    font-size: 1.7rem;
    background: linear-gradient(135deg, var(--primary) 0%, #ff5252 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Live Badge */
.live-status {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(225, 6, 0, 0.08);
    border: 1px solid rgba(225, 6, 0, 0.2);
    padding: 6px 14px;
    border-radius: 20px;
}

.pulse-dot {
    width: 7px;
    height: 7px;
    background-color: var(--primary);
    border-radius: 50%;
    animation: pulse 1.6s infinite;
    box-shadow: 0 0 8px var(--primary);
}

.live-label {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.8px;
}

/* Settings & Action Buttons */
.settings-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
    text-decoration: none;
}

.settings-btn:hover {
    border-color: var(--primary);
    background: rgba(225, 6, 0, 0.06);
    box-shadow: 0 0 12px var(--primary-glow);
    transform: translateY(-1px);
}

.settings-btn:active {
    transform: translateY(1px);
}

.settings-btn.active {
    border-color: var(--primary);
    background: rgba(225, 6, 0, 0.1);
    color: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
}

/* Main Layout Grid */
.main-content {
    flex: 1;
    display: flex;
    padding: 1.5rem;
    gap: 1.5rem;
    max-width: 1920px;
    margin: 0 auto;
    width: 100%;
    min-height: 0;
    overflow: hidden;
}

.viewing-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
}

/* Collapsible Sidebar */
.sidebar {
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex-shrink: 0;
    min-height: 0;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease, margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.sidebar.collapsed {
    width: 0;
    opacity: 0;
    pointer-events: none;
    margin-left: -1.5rem;
}

/* Video Containers */
.player-container {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: var(--transition-fast);
}

.player-container.active {
    border-color: var(--border-accent);
}

.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 18px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.player-channel-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.badge {
    font-size: 0.65rem;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 5px;
    letter-spacing: 0.5px;
}

.ch1-badge {
    background: linear-gradient(135deg, var(--primary) 0%, #ff5252 100%);
    color: #fff;
    box-shadow: 0 2px 8px var(--primary-glow);
}

.stream-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
}

.stat-res-badge {
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 3px 8px;
    border-radius: 4px;
    color: var(--text-muted);
    margin-right: 8px;
}

.player-actions {
    display: flex;
    align-items: center;
}

.player-action-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.player-action-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-main);
    transform: scale(1.05);
}

/* Video Wrapper */
.video-wrapper {
    position: relative;
    width: 100%;
    flex: 1;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.error-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(9, 11, 17, 0.96);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    text-align: center;
    z-index: 5;
}

.error-overlay i {
    font-size: 2.2rem;
    color: var(--primary);
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.error-overlay p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Sidebar Cards */
.sidebar-card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.sidebar-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
}

.sidebar-card h3 i {
    color: var(--primary);
    filter: drop-shadow(0 0 6px var(--primary-glow));
}

/* Channel Picker Card */
.channel-options {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.channel-opt-btn {
    background: transparent;
    border: none;
    border-radius: 8px;
    padding: 8px 10px;
    display: flex;
    align-items: center;
    gap: 0;
    width: 100%;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s;
}

.channel-opt-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.channel-opt-btn.active {
    background: rgba(225, 6, 0, 0.08);
}

.channel-opt-btn.active .ch-name {
    color: var(--primary);
}

.opt-details {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.ch-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    transition: color 0.15s;
}

.ch-group {
    font-size: 0.65rem;
    color: var(--text-inactive);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    margin-top: 1px;
}

#channel-search {
    border-radius: var(--border-radius-md);
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.3);
    color: var(--text-main);
    font-size: 0.85rem;
    margin-bottom: 12px;
    width: 100%;
    outline: none;
    transition: var(--transition-fast);
}

#channel-search:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px var(--primary-glow);
    background: rgba(0, 0, 0, 0.5);
}

/* ========================================================
   Uploader Styles (/add)
   ======================================================== */
.uploader-body {
    background: radial-gradient(circle at 50% 50%, rgba(225, 6, 0, 0.12) 0%, #090b11 100%), #090b11;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.uploader-container {
    width: 100%;
    max-width: 500px;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    text-align: center;
}

.uploader-header {
    position: relative;
    margin-bottom: 2rem;
}

.back-home-link {
    position: absolute;
    left: 0;
    top: 0;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.back-home-link:hover {
    color: var(--primary);
}

.brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.brand h2 {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 40%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand h2 span {
    background: linear-gradient(135deg, var(--primary) 0%, #ff5252 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-icon {
    font-size: 1.8rem;
    color: var(--primary);
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Dropzone styling */
.drop-zone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius-lg);
    padding: 3rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--primary);
    background: rgba(225, 6, 0, 0.03);
    box-shadow: 0 0 15px rgba(225, 6, 0, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}

.drop-zone:hover .upload-icon {
    color: var(--primary);
    transform: translateY(-4px);
}

.drop-zone h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.drop-zone p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Progress loader styles */
.upload-progress-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.spin-gauge {
    font-size: 2.5rem;
    color: var(--primary);
    animation: rotate-gauge 1.5s infinite linear;
    filter: drop-shadow(0 0 8px var(--primary-glow));
    margin-bottom: 1rem;
}

.progress-bar-wrapper {
    width: 80%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    margin-top: 1rem;
    overflow: hidden;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, #ff5252 100%);
    border-radius: 10px;
    transition: width 0.4s ease;
}

.status-feedback {
    margin-top: 1.5rem;
    padding: 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-feedback.success {
    background: rgba(46, 204, 113, 0.1);
    border: 1px solid rgba(46, 204, 113, 0.2);
    color: #2ecc71;
}

.status-feedback.error {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.2);
    color: #e74c3c;
}

/* ── Spinner ── */
.spinner-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(9, 11, 17, 0.6);
    z-index: 5;
    pointer-events: none;
}
.spinner-overlay.hidden { display: none; }
.spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Playlist tabs ── */
.playlist-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0 0 8px 0;
}
.playlist-tab {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.playlist-tab:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.playlist-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ── Channel group header ── */
.channel-group-header {
    font-size: 0.62rem;
    font-weight: 700;
    color: var(--text-inactive);
    padding: 12px 10px 4px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

/* ── Channel action buttons ── */
.ch-actions {
    display: flex;
    gap: 2px;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s;
    margin-left: 6px;
}
.channel-opt-btn:hover .ch-actions { opacity: 1; }
.ch-edit-btn, .ch-del-btn {
    font-size: 0.7rem;
    padding: 3px 5px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-muted);
    transition: background 0.1s, color 0.1s;
}
.ch-edit-btn:hover { background: rgba(255,255,255,0.08); color: var(--text-main); }
.ch-del-btn:hover  { background: rgba(225,6,0,0.15); color: var(--primary); }

/* Animations */
@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(225, 6, 0, 0.6);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 8px rgba(225, 6, 0, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(225, 6, 0, 0);
    }
}

@keyframes rotate-gauge {
    0% {
        transform: rotate(-120deg);
    }
    50% {
        transform: rotate(120deg);
    }
    100% {
        transform: rotate(-120deg);
    }
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .main-content {
        flex-direction: column;
        overflow-y: auto;
    }
    .sidebar {
        width: 100%;
    }
}