/* =====================================================
   YanDrive — Stylesheet
   ===================================================== */

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

:root {
    --bg: #0a0a0a;
    --bg-elev-1: #141414;
    --bg-elev-2: #1c1c1c;
    --bg-elev-3: #262626;
    --border: #2a2a2a;
    --border-strong: #3a3a3a;

    --text: #e8e8e8;
    --text-dim: #888;
    --text-faint: #555;

    --accent: #d4a574;
    --accent-bright: #f0c089;
    --danger: #c84545;
    --warning: #d4a544;
    --success: #4a9b6f;

    --mono: ui-monospace, "JetBrains Mono", "SF Mono", Consolas, monospace;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;

    --r-sm: 4px;
    --r-md: 8px;
    --r-lg: 14px;

    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.6);
}

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
}

body.auth-page { overflow: auto; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-bright); }

code, pre { font-family: var(--mono); font-size: 0.92em; }

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: 0;
    background: transparent;
    color: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

.hidden { display: none !important; }
.filler { flex: 1; }

/* AUTH PAGES */

.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
    background:
        radial-gradient(circle at 20% 30%, rgba(212, 165, 116, 0.06), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(212, 165, 116, 0.04), transparent 50%),
        var(--bg);
}

.auth-container { width: 100%; max-width: 420px; }

.auth-card {
    background: var(--bg-elev-1);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-lg);
}

.auth-logo {
    display: flex;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 1.25rem;
}

.success-icon {
    display: flex;
    justify-content: center;
    color: var(--success);
    margin-bottom: 1rem;
}

.auth-card h1 {
    text-align: center;
    font-size: 1.6rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-dim);
    font-size: 0.92rem;
    margin-bottom: 1.75rem;
}

.otp-input-wrap { margin-bottom: 1.25rem; }

.otp-input {
    width: 100%;
    text-align: center;
    font-family: var(--mono);
    font-size: 1.7rem;
    font-weight: 500;
    letter-spacing: 0.45em;
    padding: 1rem 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    border-radius: var(--r-md);
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.otp-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.15);
}

.otp-input::placeholder {
    color: var(--text-faint);
    letter-spacing: 0.3em;
}

.form-group { margin-bottom: 1rem; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 0.4rem;
    font-family: var(--mono);
}

.form-group input {
    width: 100%;
    padding: 0.7rem 0.9rem;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    border-radius: var(--r-md);
    color: var(--text);
    transition: border-color 0.15s;
}

.form-group input:focus { outline: none; border-color: var(--accent); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: var(--r-md);
    font-weight: 500;
    transition: background 0.15s, transform 0.05s;
    white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn-primary { background: var(--accent); color: #1a1208; }
.btn-primary:hover { background: var(--accent-bright); }
.btn-block { width: 100%; }

.btn-secondary {
    background: var(--bg-elev-2);
    color: var(--text);
    border: 1px solid var(--border-strong);
}
.btn-secondary:hover { background: var(--bg-elev-3); }

.btn-icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-md);
    color: var(--text-dim);
    font-size: 1.1rem;
    transition: background 0.15s, color 0.15s;
}

.btn-icon:hover { background: var(--bg-elev-2); color: var(--text); }

.btn-text {
    color: var(--text-dim);
    padding: 0.4rem 0.6rem;
    border-radius: var(--r-sm);
    font-size: 0.88rem;
    transition: color 0.15s, background 0.15s;
}

.btn-text:hover { color: var(--text); background: var(--bg-elev-2); }

.btn-copy {
    background: var(--bg-elev-3);
    color: var(--text-dim);
    width: 32px;
    height: 32px;
    border-radius: var(--r-sm);
    transition: background 0.15s, color 0.15s;
}
.btn-copy:hover { background: var(--accent); color: #1a1208; }

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--r-md);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    border-left: 3px solid;
}

.alert-error {
    background: rgba(200, 69, 69, 0.1);
    border-color: var(--danger);
    color: #f4a8a8;
}

.alert-warning {
    background: rgba(212, 165, 68, 0.08);
    border-color: var(--warning);
    color: #e8d5a8;
    font-size: 0.85rem;
}

.auth-help {
    margin-top: 1.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.hint {
    color: var(--text-dim);
    font-size: 0.85rem;
    line-height: 1.6;
}

.hint-code {
    display: inline-block;
    background: var(--bg);
    padding: 0.4rem 0.7rem;
    border-radius: var(--r-sm);
    border: 1px solid var(--border);
    color: var(--accent);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-dim);
}

.credential-box { margin-bottom: 1rem; }

.credential-box label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
}

.credential-value {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: 0.5rem 0.5rem 0.5rem 0.85rem;
}

.credential-value code {
    flex: 1;
    word-break: break-all;
    color: var(--accent);
    font-size: 0.92rem;
}

/* DRIVE */

.drive-page {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-elev-1);
    flex-shrink: 0;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.menu-toggle {
    display: none;
}

.brand {
    font-weight: 600;
    color: var(--accent);
    font-family: var(--mono);
    letter-spacing: -0.02em;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-chip {
    background: var(--bg-elev-2);
    color: var(--text-dim);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-family: var(--mono);
    font-size: 0.78rem;
    border: 1px solid var(--border);
}

/* BREADCRUMB */

.breadcrumb-bar {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.55rem 1rem;
    background: var(--bg-elev-1);
    border-bottom: 1px solid var(--border);
    font-family: var(--mono);
    font-size: 0.88rem;
    overflow-x: auto;
    flex-shrink: 0;
    white-space: nowrap;
    scrollbar-width: thin;
}

.crumb {
    color: var(--text-dim);
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    border-radius: var(--r-sm);
    transition: background 0.12s, color 0.12s;
}

.crumb:hover {
    background: var(--bg-elev-2);
    color: var(--text);
}

.crumb.active {
    color: var(--accent);
    font-weight: 600;
}

.crumb-sep {
    color: var(--text-faint);
    font-size: 0.9rem;
}

/* STATS */

.stats-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.4rem 1rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.82rem;
    font-family: var(--mono);
    flex-shrink: 0;
}

.drive-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.sidebar {
    width: 240px;
    background: var(--bg-elev-1);
    border-right: 1px solid var(--border);
    padding: 1rem 0.5rem;
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    padding: 0 0.5rem;
}

.sidebar h3 {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    font-family: var(--mono);
    font-weight: 500;
}

.sidebar-close { display: none; }
.sidebar-backdrop { display: none; }

.folder-list {
    list-style: none;
    margin-bottom: 1rem;
}

.folder-list li {
    padding: 0.4rem 0.6rem;
    border-radius: var(--r-sm);
    cursor: pointer;
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 1px;
    transition: background 0.12s, color 0.12s;
    word-break: break-all;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.folder-list li:hover {
    background: var(--bg-elev-2);
    color: var(--text);
}

.folder-list li.active {
    background: var(--bg-elev-3);
    color: var(--accent);
}
.folder-list li {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.tree-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    flex-shrink: 0;
    color: var(--text-faint);
    cursor: pointer;
    font-size: 0.7rem;
    user-select: none;
}

.tree-arrow:hover {
    color: var(--text);
}

.tree-spacer {
    cursor: default;
}

.tree-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.files-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.files-toolbar {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

#search {
    flex: 1;
    padding: 0.5rem 0.85rem;
    background: var(--bg-elev-1);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    color: var(--text);
}

#search:focus { outline: none; border-color: var(--accent); }

.files-grid {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.85rem;
    align-content: start;
}

/* FOLDER CARD */

.folder-card {
    background: var(--bg-elev-1);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.08s, border-color 0.12s, background 0.12s;
    display: flex;
    flex-direction: column;
    position: relative;
}

.folder-card:hover {
    border-color: var(--accent);
    background: var(--bg-elev-2);
    transform: translateY(-1px);
}

.folder-thumb {
    aspect-ratio: 1;
    background: linear-gradient(135deg, rgba(212,165,116,0.08), rgba(212,165,116,0.02));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    overflow: hidden;
    position: relative;
}

.folder-thumb svg {
    width: 50%;
    height: 50%;
}

/* FILE CARD */

.file-card {
    background: var(--bg-elev-1);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.08s, border-color 0.12s, background 0.12s;
    display: flex;
    flex-direction: column;
    position: relative;
}

.file-card:hover {
    border-color: var(--accent);
    background: var(--bg-elev-2);
    transform: translateY(-1px);
}

.file-thumb {
    aspect-ratio: 1;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    font-size: 2rem;
    overflow: hidden;
    position: relative;
}

.file-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.file-thumb .icon-svg {
    width: 40%;
    height: 40%;
    color: var(--accent);
    opacity: 0.7;
}

.file-info {
    padding: 0.55rem 0.7rem;
    border-top: 1px solid var(--border);
    background: var(--bg-elev-1);
}

.file-dl-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 32px;
    height: 32px;
    background: rgba(0,0,0,0.7);
    color: var(--accent);
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s;
    z-index: 2;
    border: 1px solid var(--border-strong);
}

.file-menu-btn {
    position: absolute;
    top: 6px;
    left: 6px;
    width: 32px;
    height: 32px;
    background: rgba(0,0,0,0.7);
    color: var(--text);
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s;
    z-index: 2;
    border: 1px solid var(--border-strong);
    line-height: 0;
    padding-bottom: 6px;
}

.file-card:hover .file-dl-btn,
.file-card:hover .file-menu-btn,
.folder-card:hover .file-menu-btn {
    opacity: 1;
}

.file-dl-btn:hover {
    background: var(--accent);
    color: #1a1208;
    opacity: 1;
}

.file-menu-btn:hover {
    background: var(--bg-elev-3);
    opacity: 1;
}

.file-name {
    font-size: 0.82rem;
    line-height: 1.35;
    word-break: break-word;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0.2rem;
}

.file-meta {
    font-size: 0.7rem;
    color: var(--text-faint);
    font-family: var(--mono);
}

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-faint);
    text-align: center;
    padding: 2rem;
}

.empty-state svg { margin-bottom: 1rem; opacity: 0.4; }
.empty-state p { margin: 0.25rem 0; }

/* PLAYER */

.player {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-elev-2);
    border-top: 1px solid var(--border-strong);
    padding: 0.6rem 1rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr auto;
    gap: 1rem;
    align-items: center;
    z-index: 100;
    box-shadow: 0 -8px 24px rgba(0,0,0,0.4);
}

.player-info { display: flex; flex-direction: column; overflow: hidden; }

.player-info #player-title {
    font-size: 0.92rem;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-time {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: var(--mono);
}

.player-controls { display: flex; align-items: center; gap: 0.25rem; }

.player-play {
    background: var(--accent);
    color: #1a1208;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1rem;
}

.player-play:hover { background: var(--accent-bright); color: #1a1208; }

#player-seek {
    flex: 1;
    -webkit-appearance: none;
    height: 4px;
    background: var(--bg-elev-3);
    border-radius: 2px;
    cursor: pointer;
}

#player-seek::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px; height: 14px;
    background: var(--accent);
    border-radius: 50%;
}

#player-seek::-moz-range-thumb {
    width: 14px; height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: 0;
}

/* VIEWER */

.viewer {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.92);
    z-index: 200;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.viewer-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
}

.viewer-content {
    max-width: 100%;
    max-height: calc(100% - 4rem);
    display: flex;
    align-items: center;
    justify-content: center;
}

.viewer-content img,
.viewer-content video {
    max-width: 100%;
    max-height: calc(100vh - 8rem);
    object-fit: contain;
    border-radius: var(--r-md);
}

.viewer-caption {
    margin-top: 1rem;
    color: var(--text-dim);
    font-family: var(--mono);
    font-size: 0.88rem;
}

/* UPLOAD PANEL */

.upload-panel {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    width: 360px;
    max-width: calc(100vw - 2rem);
    background: var(--bg-elev-2);
    border: 1px solid var(--border-strong);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-lg);
    z-index: 90;
    overflow: hidden;
}

.upload-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.8rem;
    background: var(--bg-elev-3);
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
}

.upload-list {
    list-style: none;
    max-height: 240px;
    overflow-y: auto;
}

.upload-list li {
    padding: 0.55rem 0.8rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.82rem;
}

.upload-list li:last-child { border-bottom: 0; }

.upload-name {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.3rem;
    color: var(--text);
}

.upload-name span:last-child {
    color: var(--text-dim);
    font-family: var(--mono);
    font-size: 0.78rem;
}

.upload-progress {
    height: 3px;
    background: var(--bg);
    border-radius: 2px;
    overflow: hidden;
}

.upload-progress-bar {
    height: 100%;
    background: var(--accent);
    width: 0;
    transition: width 0.2s;
}

.upload-progress-bar.error { background: var(--danger); }
.upload-progress-bar.done { background: var(--success); }

/* DROP ZONE */

.drop-overlay {
    position: absolute;
    inset: 0;
    background: rgba(212, 165, 116, 0.1);
    border: 3px dashed var(--accent);
    border-radius: var(--r-md);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
}

.drop-overlay.active { opacity: 1; }

.drop-message { text-align: center; color: var(--accent); }
.drop-message p { margin-top: 0.75rem; font-size: 1.1rem; font-family: var(--mono); }

/* MOBILE */

@media (max-width: 720px) {
    .topbar { padding: 0.5rem 0.5rem; }
    .brand { font-size: 0.95rem; }
    .stats-bar { font-size: 0.75rem; padding: 0.4rem 0.6rem; }

    .breadcrumb-bar {
        padding: 0.4rem 0.6rem;
        font-size: 0.82rem;
    }

    .menu-toggle {
        display: inline-flex;
        font-size: 1.4rem;
        color: var(--text);
    }

    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        z-index: 110;
        width: 280px;
        max-width: 85vw;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        box-shadow: var(--shadow-lg);
        padding-top: 1.5rem;
    }

    .sidebar.open { transform: translateX(0); }

    .sidebar-close {
        display: inline-flex;
        font-size: 1.1rem;
    }

    .sidebar-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 105;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s;
    }

    .sidebar-backdrop.active {
        opacity: 1;
        pointer-events: auto;
    }

    .files-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.6rem;
        padding: 0.75rem;
    }

    .files-toolbar {
        gap: 0.4rem;
        padding: 0.6rem;
    }

    .files-toolbar .btn {
        padding: 0.45rem 0.7rem;
        font-size: 0.85rem;
    }

    .file-name { font-size: 0.78rem; }
    .file-meta { font-size: 0.68rem; }

    .file-dl-btn,
    .file-menu-btn {
        opacity: 1;
        width: 36px;
        height: 36px;
    }

    .player {
        grid-template-columns: 1fr auto;
        gap: 0.5rem;
        padding: 0.5rem 0.7rem;
    }

    #player-seek {
        grid-column: 1 / -1;
    }

    .upload-panel {
        bottom: 100px;
        left: 0.5rem;
        right: 0.5rem;
        width: auto;
    }

    .auth-card { padding: 1.75rem 1.25rem; }

    .otp-input {
        font-size: 1.4rem;
        letter-spacing: 0.35em;
    }
}

@supports (padding: env(safe-area-inset-bottom)) {
    .player { padding-bottom: calc(0.6rem + env(safe-area-inset-bottom)); }
    .upload-panel { bottom: calc(1rem + env(safe-area-inset-bottom)); }
}