/* Media Viewer v1.0 — Dark theme + blue accent, mobile-first */

:root {
    --bg: #1a1a1a;
    --card: #2a2a2a;
    --card-hover: #333;
    --border: #3a3a3a;
    --text: #e0e0e0;
    --text-muted: #888;
    --accent: #3b82f6;
    --accent-hover: #2c6dd6;
    --danger: #dc2626;
    --radius: 8px;
    --header-h: 56px;
    --bottom-pad: 16px;
    --thumb-size: 120px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.4;
    min-height: 100%;
    -webkit-text-size-adjust: 100%;
}

button { font-family: inherit; }

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

/* ---------- Top bar ---------- */

.topbar {
    position: sticky; top: 0; z-index: 50;
    height: var(--header-h);
    background: rgba(26,26,26,0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 12px;
    padding: 0 12px;
}
.topbar .back-btn, .topbar .toggle-btn, .topbar .logout-btn {
    background: transparent; border: 1px solid var(--border); color: var(--text);
    border-radius: 50%; width: 36px; height: 36px; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background .15s, border-color .15s;
    font-size: 18px;
}
.topbar .back-btn:hover, .topbar .toggle-btn:hover, .topbar .logout-btn:hover {
    background: var(--card); border-color: var(--accent);
}
.topbar .spacer { flex: 1; }

.topbar .view-label {
    font-size: 14px; color: var(--text-muted);
}

/* ---------- Breadcrumbs ---------- */

.breadcrumbs {
    display: flex; flex-wrap: nowrap; gap: 4px; align-items: center;
    overflow-x: auto; white-space: nowrap; padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    scrollbar-width: thin;
}
.breadcrumbs::-webkit-scrollbar { height: 4px; }
.breadcrumbs::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.breadcrumbs a, .breadcrumbs span {
    color: var(--text-muted); flex-shrink: 0;
}
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs .current { color: var(--text); font-weight: 500; }
.breadcrumbs .sep { color: var(--text-muted); opacity: .5; margin: 0 2px; }

/* ---------- Login ---------- */

#login-view {
    display: none; min-height: 100vh;
    align-items: center; justify-content: center;
}
#login-view.active { display: flex; }
.login-card {
    width: 320px; max-width: calc(100vw - 32px);
    background: var(--card); padding: 28px 24px;
    border-radius: var(--radius); border: 1px solid var(--border);
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card .subtitle { color: var(--text-muted); margin: 0 0 20px; font-size: 13px; }
.login-card .field { margin-bottom: 14px; }
.login-card label { display: block; margin-bottom: 6px; color: var(--text-muted); font-size: 13px; }
.login-card input {
    width: 100%; padding: 10px 12px; background: var(--bg);
    border: 1px solid var(--border); border-radius: 6px;
    color: var(--text); font-size: 15px;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card .btn-primary {
    width: 100%; padding: 11px; background: var(--accent);
    color: #fff; border: none; border-radius: 6px; cursor: pointer;
    font-size: 15px; font-weight: 500;
}
.login-card .btn-primary:hover { background: var(--accent-hover); }
.login-card .btn-primary:disabled { opacity: .5; cursor: default; }
.login-card .error {
    background: rgba(220,38,38,0.12); color: #f87171;
    border: 1px solid rgba(220,38,38,0.4);
    padding: 10px 12px; border-radius: 6px; margin-top: 12px;
    font-size: 13px;
}

/* ---------- Browser ---------- */

#browser-view { display: none; padding-bottom: 80px; }
#browser-view.active { display: block; }

/* On This Day strip */
.on-this-day {
    display: none; padding: 10px 12px 14px;
    border-bottom: 1px solid var(--border);
}
.on-this-day.active { display: block; }
.on-this-day h3 {
    margin: 0 0 8px; font-size: 13px; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: .04em;
}
.on-this-day .strip {
    display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none;
    padding-bottom: 2px;
}
.on-this-day .strip::-webkit-scrollbar { display: none; }
.on-this-day .strip-item {
    flex: 0 0 auto; width: 92px; height: 92px;
    border-radius: 6px; overflow: hidden; background: var(--card);
    border: 1px solid var(--border); cursor: pointer; position: relative;
}
.on-this-day .strip-item img,
.on-this-day .strip-item .placeholder {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.on-this-day .strip-item .placeholder {
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); background: #222;
}

/* ---------- List view ---------- */

.file-list { padding: 8px 12px; }
.file-row {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 8px; border-radius: var(--radius);
    cursor: pointer; transition: background .15s;
}
.file-row:hover { background: var(--card); }
.file-row .icon {
    flex: 0 0 auto; width: 48px; height: 48px;
    border-radius: 6px; overflow: hidden;
    background: var(--card); display: flex;
    align-items: center; justify-content: center;
    color: var(--text-muted); position: relative;
}
.file-row .icon img { width: 100%; height: 100%; object-fit: cover; }
.file-row .icon .folder-glyph { font-size: 28px; color: #f0c040; }
.file-row .icon .paperclip { font-size: 20px; }
.file-row .icon .play-overlay {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 22px;
}
.file-row .info { flex: 1; min-width: 0; }
.file-row .name {
    font-size: 15px; overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap;
}
.file-row .meta { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.file-row .download-btn {
    flex: 0 0 auto; width: 36px; height: 36px;
    background: transparent; border: 1px solid var(--border);
    border-radius: 50%; color: var(--text); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background .15s, border-color .15s;
}
.file-row .download-btn:hover { background: var(--card); border-color: var(--accent); color: var(--accent); }

/* ---------- Grid view ---------- */

.file-grid {
    display: grid; gap: 4px; padding: 8px 4px;
    grid-template-columns: repeat(3, 1fr);
}
.file-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.file-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.file-grid.cols-6 { grid-template-columns: repeat(6, 1fr); }

.grid-date {
    grid-column: 1 / -1;
    padding: 12px 8px 6px;
    font-size: 13px; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: .04em;
}
.grid-folder-row {
    grid-column: 1 / -1;
    display: grid; gap: 4px;
    grid-template-columns: repeat(3, 1fr);
}
.grid-folder-row.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-folder-row.cols-5 { grid-template-columns: repeat(5, 1fr); }
.grid-folder-row.cols-6 { grid-template-columns: repeat(6, 1fr); }

.grid-tile {
    position: relative; cursor: pointer;
    aspect-ratio: 1 / 1;
    background: var(--card); overflow: hidden;
    border-radius: 4px;
}
.grid-tile img, .grid-tile .placeholder {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.grid-tile .placeholder {
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); background: #222;
    font-size: 24px;
}
.grid-tile .play-overlay {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 28px;
}
.grid-tile .label {
    position: absolute; left: 0; right: 0; bottom: 0;
    padding: 6px 8px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: #fff; font-size: 12px;
    text-overflow: ellipsis; overflow: hidden; white-space: nowrap;
}
.grid-tile .folder-badge {
    position: absolute; top: 4px; right: 4px;
    background: rgba(0,0,0,0.6); color: #fff;
    width: 22px; height: 22px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px;
}
.grid-tile .download-mini {
    position: absolute; bottom: 4px; right: 4px;
    background: rgba(0,0,0,0.65); color: #fff;
    width: 28px; height: 28px; border-radius: 50%;
    border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
    opacity: 0; transition: opacity .15s;
}
.grid-tile:hover .download-mini { opacity: 1; }

/* ---------- Inline video player ---------- */

.inline-player {
    display: none; padding: 12px; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius);
    margin: 8px 12px;
}
.inline-player.active { display: block; }
.inline-player video {
    width: 100%; max-height: 50vh; background: #000;
    border-radius: 4px;
}
.inline-player .player-head {
    display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.inline-player .player-head .title {
    flex: 1; font-weight: 500; font-size: 14px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.inline-player .player-head button {
    background: transparent; color: var(--text);
    border: 1px solid var(--border); border-radius: 4px;
    padding: 6px 12px; cursor: pointer; font-size: 13px;
}
.inline-player .player-head button:hover { border-color: var(--accent); color: var(--accent); }
.inline-player .hevc-notice {
    color: var(--text-muted); font-size: 13px; padding: 8px 4px;
}

/* ---------- Lightbox ---------- */

#lightbox {
    position: fixed; inset: 0; z-index: 100;
    background: rgba(0,0,0,0.96);
    display: none; align-items: center; justify-content: center;
    flex-direction: row;
}
#lightbox.active { display: flex; }
#lightbox img {
    max-width: 100%; max-height: 100vh; object-fit: contain;
    user-select: none; -webkit-user-drag: none;
}
#lightbox .nav-btn {
    position: absolute; top: 50%; transform: translateY(-50%);
    background: rgba(255,255,255,0.1); color: #fff;
    border: none; width: 44px; height: 44px; border-radius: 50%;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    transition: background .15s;
}
#lightbox .nav-btn:hover { background: rgba(255,255,255,0.25); }
#lightbox .nav-prev { left: 12px; }
#lightbox .nav-next { right: 12px; }
#lightbox .close-btn {
    position: absolute; top: 12px; right: 12px;
    background: rgba(255,255,255,0.1); color: #fff;
    border: none; width: 40px; height: 40px; border-radius: 50%;
    cursor: pointer; font-size: 20px;
}
#lightbox .count {
    position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
    color: rgba(255,255,255,0.6); font-size: 13px;
}

/* ---------- Skeletons ---------- */

.skeleton {
    background: linear-gradient(90deg, var(--card) 0%, #383838 50%, var(--card) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.2s infinite;
    border-radius: 4px;
}
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.skeleton-row {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 8px;
}
.skeleton-row .sk-icon { flex: 0 0 auto; width: 48px; height: 48px; }
.skeleton-row .sk-line { flex: 1; height: 12px; margin-bottom: 4px; }
.skeleton-row .sk-meta { flex: 0 0 80px; height: 10px; }
.sk-grid-tile {
    aspect-ratio: 1 / 1; border-radius: 4px;
}

/* ---------- Error ---------- */

.error-banner {
    background: rgba(220,38,38,0.1);
    border: 1px solid rgba(220,38,38,0.4);
    color: #f87171;
    padding: 14px 16px; border-radius: var(--radius);
    margin: 16px 12px; text-align: center;
}
.error-banner .retry {
    margin-top: 10px; background: transparent;
    color: var(--accent); border: 1px solid var(--accent);
    padding: 6px 14px; border-radius: 4px;
    cursor: pointer; font-size: 13px;
}
.empty-state {
    text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.empty-state .icon { font-size: 40px; margin-bottom: 8px; opacity: .5; }

/* ---------- Admin page ---------- */

.admin-body { padding: 24px; max-width: 720px; margin: 0 auto; }
.admin-body h1 {
    font-size: 22px; margin: 0 0 4px;
}
.admin-body .subtitle { color: var(--text-muted); margin: 0 0 20px; font-size: 13px; }

.admin-back-link { display: block; margin-bottom: 12px; }

.user-list {
    margin: 20px 0; border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden;
}
.user-row {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px; border-bottom: 1px solid var(--border);
    background: var(--card);
}
.user-row:last-child { border-bottom: none; }
.user-row .info { flex: 1; min-width: 0; }
.user-row .info .name { font-weight: 500; }
.user-row .info .meta { color: var(--text-muted); font-size: 12px; margin-top: 2px; }
.user-row .badge {
    background: rgba(59,130,246,0.18); color: #93c5fd;
    padding: 2px 8px; border-radius: 4px; font-size: 11px; margin-left: 6px;
}
.user-row .actions { display: flex; gap: 6px; }
.user-row .actions button {
    background: var(--bg); color: var(--text);
    border: 1px solid var(--border); border-radius: 4px;
    padding: 6px 10px; cursor: pointer; font-size: 12px;
}
.user-row .actions button.danger { color: #f87171; border-color: rgba(220,38,38,0.4); }
.user-row .actions button:hover { border-color: var(--accent); color: var(--accent); }

.add-user-form {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px;
}
.add-user-form .field { margin-bottom: 12px; }
.add-user-form label { display: block; margin-bottom: 4px; color: var(--text-muted); font-size: 13px; }
.add-user-form input[type="text"], .add-user-form input[type="password"] {
    width: 100%; padding: 8px 10px; background: var(--bg);
    border: 1px solid var(--border); border-radius: 6px; color: var(--text);
}
.add-user-form input:focus { outline: none; border-color: var(--accent); }
.add-user-form .row { display: flex; gap: 12px; }
.add-user-form .row .field { flex: 1; }
.add-user-form .checkbox-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.add-user-form .checkbox-row input { accent-color: var(--accent); }
.add-user-form .home-path-row { display: flex; gap: 8px; align-items: stretch; }
.add-user-form .home-path-row input { flex: 1; }
.add-user-form .browse-btn {
    border: 1px solid var(--border); background: var(--bg);
    color: var(--text); padding: 0 14px;
    border-radius: 6px; cursor: pointer; white-space: nowrap;
}
.add-user-form .browse-btn:hover { border-color: var(--accent); color: var(--accent); }
.add-user-form .save-btn {
    background: var(--accent); color: #fff; border: none;
    padding: 10px 20px; border-radius: 6px; cursor: pointer; font-size: 14px;
}
.add-user-form .save-btn:hover { background: var(--accent-hover); }
.add-user-form .form-error {
    color: #f87171; font-size: 13px; margin-top: 8px;
}

/* ---------- Folder picker modal ---------- */

#folder-picker {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(0,0,0,0.7);
    display: none; align-items: center; justify-content: center;
}
#folder-picker.active { display: flex; }
.fp-modal {
    width: 480px; max-width: calc(100vw - 32px); max-height: 70vh;
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    display: flex; flex-direction: column;
}
.fp-head {
    padding: 12px 16px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 8px;
}
.fp-head .fp-breadcrumbs {
    flex: 1; overflow-x: auto; white-space: nowrap; color: var(--text-muted);
}
.fp-body { flex: 1; overflow-y: auto; padding: 8px 0; }
.fp-body .fp-dir-row {
    padding: 10px 16px; cursor: pointer; display: flex; align-items: center; gap: 8px;
}
.fp-body .fp-dir-row:hover { background: rgba(59,130,246,0.12); }
.fp-foot {
    padding: 12px 16px; border-top: 1px solid var(--border);
    display: flex; justify-content: flex-end; gap: 8px;
}
.fp-foot button {
    padding: 8px 16px; border-radius: 6px; cursor: pointer;
    border: 1px solid var(--border); background: var(--bg); color: var(--text);
    font-size: 13px;
}
.fp-foot button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.fp-foot button.primary:hover { background: var(--accent-hover); }

/* ---------- Footer ---------- */

footer {
    text-align: center; color: var(--text-muted);
    padding: 18px 12px; font-size: 12px;
    border-top: 1px solid var(--border); margin-top: 24px;
}

/* ---------- Responsive ---------- */

@media (min-width: 600px) {
    .file-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 900px) {
    .file-grid { grid-template-columns: repeat(5, 1fr); }
    .grid-folder-row { grid-template-columns: repeat(5, 1fr); }
}

@media (min-width: 1200px) {
    .file-grid { grid-template-columns: repeat(6, 1fr); }
    .grid-folder-row { grid-template-columns: repeat(6, 1fr); }
}