/* ===================================================
   TorrentFlow x365 — Premium Dark UI
   =================================================== */

/* ---------- Design Tokens ---------- */
:root {
    --bg-deep: #060a14;
    --bg-base: #0a0e1a;
    --bg-surface: rgba(16, 22, 40, 0.75);
    --bg-surface-hover: rgba(22, 30, 55, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --bg-glass-strong: rgba(255, 255, 255, 0.07);

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-active: rgba(0, 210, 255, 0.25);

    --accent: #00d2ff;
    --accent-glow: rgba(0, 210, 255, 0.35);
    --accent-secondary: #7b61ff;
    --accent-secondary-glow: rgba(123, 97, 255, 0.3);
    --success: #34d399;
    --success-glow: rgba(52, 211, 153, 0.3);
    --warning: #fbbf24;
    --danger: #f87171;
    --danger-glow: rgba(248, 113, 113, 0.3);

    --text-primary: #f0f2f8;
    --text-secondary: rgba(240, 242, 248, 0.55);
    --text-muted: rgba(240, 242, 248, 0.3);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ---------- Background ---------- */
body {
    font-family: var(--font);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.app-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 60% 50% at 15% 0%, rgba(0, 210, 255, 0.08) 0%, transparent 70%),
        radial-gradient(ellipse 50% 50% at 85% 100%, rgba(123, 97, 255, 0.07) 0%, transparent 70%),
        var(--bg-deep);
}

/* ---------- Container ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    animation: containerIn 0.6s var(--transition) both;
}

@keyframes containerIn {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Header ---------- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    margin-bottom: 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-icon {
    font-size: 36px;
    filter: drop-shadow(0 0 12px var(--accent-glow));
    animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 12px var(--accent-glow)); transform: scale(1); }
    50%      { filter: drop-shadow(0 0 20px var(--accent-glow)); transform: scale(1.05); }
}

header h1 {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-tag {
    font-weight: 400;
    font-size: 14px;
    opacity: 0.6;
    -webkit-text-fill-color: var(--accent);
}

.logo-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 2px;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.stat-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: var(--transition);
}

.stat-pill:hover {
    background: var(--bg-glass-strong);
}

.stat-pill-icon {
    font-size: 13px;
}

/* WebSocket indicator */
.ws-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning);
    box-shadow: 0 0 6px var(--warning);
    transition: var(--transition);
}

.ws-dot.connected {
    background: var(--success);
    box-shadow: 0 0 8px var(--success-glow);
    animation: wsDotPulse 2s ease-in-out infinite;
}

.ws-dot.disconnected {
    background: var(--danger);
    box-shadow: 0 0 6px var(--danger-glow);
}

@keyframes wsDotPulse {
    0%, 100% { box-shadow: 0 0 6px var(--success-glow); }
    50%      { box-shadow: 0 0 14px var(--success-glow); }
}

/* ---------- Sections ---------- */
.add-torrent,
.torrents-list {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 28px;
    margin-bottom: 20px;
    backdrop-filter: blur(20px) saturate(1.3);
    -webkit-backdrop-filter: blur(20px) saturate(1.3);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.section-hint {
    font-size: 12px;
    color: var(--text-muted);
}

/* ---------- Input Group ---------- */
.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
}

.input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--bg-glass-strong);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0 14px;
    transition: var(--transition);
}

.input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.1);
}

.input-icon {
    font-size: 16px;
    margin-right: 10px;
    opacity: 0.5;
}

.input-wrapper input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    padding: 14px 0;
    font-size: 14px;
    font-family: var(--font);
    color: var(--text-primary);
}

.input-wrapper input::placeholder {
    color: var(--text-muted);
}

.input-paste-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    font-size: 16px;
    opacity: 0.4;
    transition: var(--transition);
    border-radius: var(--radius-sm);
}

.input-paste-btn:hover {
    opacity: 1;
    background: var(--bg-glass);
    transform: none;
    box-shadow: none;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 22px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #0090b8 100%);
    color: #000;
    box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-glass-strong);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    background: var(--bg-glass);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-icon {
    font-size: 14px;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ---------- Options Row ---------- */
.options-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-subtle);
    border-radius: 4px;
    position: relative;
    transition: var(--transition);
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: #000;
}

.shortcut-hint {
    font-size: 11px;
    color: var(--text-muted);
}

kbd {
    display: inline-block;
    padding: 1px 6px;
    background: var(--bg-glass-strong);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    font-family: var(--font);
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.empty-state span {
    font-size: 13px;
}

.empty-state.error {
    color: var(--danger);
}

/* ---------- Torrent Card ---------- */
.torrent-item {
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 22px;
    margin-bottom: 12px;
    transition: var(--transition);
    animation: cardIn 0.4s var(--transition) both;
    position: relative;
    overflow: hidden;
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.torrent-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: transparent;
    transition: var(--transition);
}

.torrent-item:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-active);
    transform: translateY(-1px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.torrent-item[data-state="downloading"]::before,
.torrent-item[data-state="4"]::before {
    background: var(--success);
    box-shadow: 0 0 12px var(--success-glow);
}

.torrent-item[data-state="completed"]::before {
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}

.torrent-item[data-state="seeding"]::before,
.torrent-item[data-state="5"]::before {
    background: var(--accent-secondary);
    box-shadow: 0 0 12px var(--accent-secondary-glow);
}

/* Torrent Header */
.torrent-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
    gap: 12px;
}

.torrent-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Badges */
.done-badge,
.seed-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-left: 10px;
    vertical-align: middle;
}

.done-badge {
    background: linear-gradient(135deg, var(--accent) 0%, #0090b8 100%);
    color: #000;
    box-shadow: 0 2px 10px var(--accent-glow);
}

.seed-badge {
    background: linear-gradient(135deg, var(--accent-secondary), #9b59ff);
    color: #fff;
    box-shadow: 0 2px 10px var(--accent-secondary-glow);
    animation: seedPulse 2.5s ease-in-out infinite;
}

@keyframes seedPulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.75; transform: scale(1.03); }
}

/* Torrent Actions */
.torrent-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.torrent-actions button {
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: var(--bg-glass-strong);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.torrent-actions button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.torrent-actions .btn-pause:hover  { border-color: var(--warning); color: var(--warning); }
.torrent-actions .btn-resume:hover { border-color: var(--success); color: var(--success); }
.torrent-actions .btn-delete:hover { border-color: var(--danger); color: var(--danger); background: rgba(248, 113, 113, 0.1); }
.torrent-actions .btn-download:hover { border-color: var(--accent); color: var(--accent); }

.torrent-actions button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ---------- Progress Bar ---------- */
.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 100px;
    overflow: hidden;
    margin-bottom: 16px;
    position: relative;
}

.progress-fill {
    height: 100%;
    border-radius: 100px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-secondary) 100%);
    transition: width 0.8s ease-out;
    will-change: width;
    position: relative;
}

/* Animated shimmer on active downloads */
.torrent-item[data-state="downloading"] .progress-fill,
.torrent-item[data-state="4"] .progress-fill {
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-secondary) 50%, var(--accent) 100%);
    background-size: 200% 100%;
    animation: progressShimmer 2s linear infinite;
}

@keyframes progressShimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.progress-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 20px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
    border-radius: 100px;
}

/* ---------- Torrent Stats Grid ---------- */
.torrent-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 8px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    padding: 8px 10px;
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: var(--transition);
}

.stat-item:hover {
    border-color: var(--border-subtle);
}

.stat-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition);
}

/* State colors */
.state-downloading, .state-4 { color: var(--success); font-weight: 700; }
.state-seeding, .state-5     { color: var(--accent-secondary); }
.state-completed             { color: var(--accent); }
.state-paused                { color: var(--warning); }
.state-error                 { color: var(--danger); }

/* ---------- Toast Notifications ---------- */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    color: white;
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: pre-line;
    word-break: break-word;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-success { background: linear-gradient(135deg, rgba(52, 211, 153, 0.9), rgba(16, 185, 129, 0.9)); }
.toast-error   { background: linear-gradient(135deg, rgba(248, 113, 113, 0.9), rgba(239, 68, 68, 0.9)); }
.toast-info    { background: linear-gradient(135deg, rgba(0, 210, 255, 0.9), rgba(123, 97, 255, 0.9)); }

/* Toast dismiss timer bar */
.toast::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: rgba(255, 255, 255, 0.3);
    animation: toastTimer 5s linear forwards;
}

@keyframes toastTimer {
    from { width: 100%; }
    to   { width: 0%; }
}

/* ---------- Media Player Modal ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 12000;
}

.media-modal-content {
    background: var(--bg-glass-heavy);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s ease;
}

/* ---------- File Picker Modal ---------- */
.file-picker-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 11000;
    padding: 20px;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.file-picker {
    width: min(720px, 95vw);
    background: var(--bg-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    box-shadow: 0 32px 64px rgba(0, 0, 0, 0.5);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    animation: modalIn 0.3s var(--transition) both;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.file-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.file-picker-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.file-picker-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.file-picker-close {
    background: var(--bg-glass-strong);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    font-size: 12px;
    font-family: var(--font);
    cursor: pointer;
    transition: var(--transition);
}

.file-picker-close:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
    transform: none;
    box-shadow: none;
}

.file-picker-actions {
    display: flex;
    justify-content: flex-end;
}

.file-picker-list {
    max-height: 380px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.file-picker-list::-webkit-scrollbar {
    width: 6px;
}

.file-picker-list::-webkit-scrollbar-track {
    background: transparent;
}

.file-picker-list::-webkit-scrollbar-thumb {
    background: var(--border-subtle);
    border-radius: 100px;
}

.file-picker-row {
    display: grid;
    grid-template-columns: 1fr 100px 80px;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    background: var(--bg-glass);
    transition: var(--transition);
}

.file-picker-row:hover {
    background: var(--bg-glass-strong);
    border-color: var(--border-active);
}

.file-picker-name {
    font-size: 13px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-picker-size {
    font-size: 12px;
    color: var(--text-muted);
    text-align: right;
}

.file-picker-download {
    background: linear-gradient(135deg, var(--accent) 0%, #0090b8 100%);
    color: #000;
    padding: 7px 12px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 12px;
    font-family: var(--font);
    transition: var(--transition);
}

.file-picker-download:hover {
    box-shadow: 0 4px 14px var(--accent-glow);
    transform: translateY(-1px);
}

button.download-all {
    background: linear-gradient(135deg, var(--accent-secondary), #9b59ff);
    color: white;
    padding: 8px 18px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

button.download-all:hover {
    box-shadow: 0 4px 14px var(--accent-secondary-glow);
    transform: translateY(-1px);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    header {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
    }

    .stats-bar {
        justify-content: center;
    }

    .input-group {
        flex-direction: column;
    }

    .torrent-header {
        flex-direction: column;
        gap: 12px;
    }

    .torrent-actions {
        flex-wrap: wrap;
    }

    .torrent-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .options-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .section-header {
        flex-direction: column;
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .torrent-stats {
        grid-template-columns: 1fr;
    }

    .file-picker-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .file-picker-size {
        text-align: left;
    }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-subtle);
    border-radius: 100px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.12);
}

/* ---------- Selection ---------- */
::selection {
    background: var(--accent);
    color: #000;
}