:root {
    --bg: #0b1015;
    --panel: rgba(18, 24, 31, 0.94);
    --panel-2: rgba(27, 35, 44, 0.96);
    --panel-3: rgba(32, 40, 50, 0.98);
    --line: rgba(139, 158, 177, 0.16);
    --text: #e6edf5;
    --muted: #90a2b4;
    --accent: #78d8b3;
    --accent-soft: rgba(120, 216, 179, 0.14);
    --danger: #ff8398;
    --warning: #ffd27c;
    --info: #a9bcff;
    --shadow: 0 18px 36px rgba(0, 0, 0, 0.28);
    --radius: 16px;
    --app-top-offset: 128px;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html,
body {
    margin: 0;
    height: 100%;
    min-height: 100%;
}

body {
    font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(120, 216, 179, 0.1), transparent 26%),
        radial-gradient(circle at bottom right, rgba(100, 122, 255, 0.14), transparent 28%),
        linear-gradient(180deg, #0b1015 0%, #06090d 100%);
}

body.app-body {
    overflow: hidden;
}

button,
audio,
input {
    font: inherit;
}

i.fa-solid {
    line-height: 1;
}

.app-shell {
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
    padding: var(--app-top-offset) 14px 14px;
}

.player-topbar,
.tree-pane,
.files-pane,
.banner,
.login-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.player-topbar {
    position: fixed;
    top: 10px;
    left: 14px;
    right: 14px;
    padding: 10px 12px;
    z-index: 10;
}

.player-cluster {
    display: grid;
    gap: 6px;
}

.track-head {
    display: grid;
    gap: 2px;
}

.track-title {
    font-size: 14px;
    font-weight: 700;
}

.track-path {
    color: var(--muted);
    font-size: 11px;
}

.player-strip,
.player-controls,
.mode-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.icon-button,
.file-button,
.playlist-track-button,
.playlist-row,
.playlist-choice,
.sidebar-tab,
.login-form input {
    border-radius: 11px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--text);
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 36px;
    padding: 8px 11px;
    cursor: pointer;
    transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.icon-button:hover,
.file-button:hover,
.playlist-track-button:hover,
.playlist-row:hover,
.playlist-choice:hover,
.sidebar-tab:hover,
.tree-nav:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.icon-only {
    width: 36px;
    min-width: 36px;
    padding: 0;
}

.tree-load.icon-only {
    width: 34px;
    min-width: 34px;
    min-height: 34px;
}

.transport-strip {
    flex: 1 1 320px;
    min-width: min(320px, 100%);
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
}

.timecode {
    min-width: 34px;
    color: var(--muted);
    font-size: 11px;
    font-variant-numeric: tabular-nums;
}

.seek-bar {
    --progress-value: 0%;
    appearance: none;
    width: 100%;
    height: 6px;
    margin: 0;
    border-radius: 999px;
    background: linear-gradient(
        90deg,
        rgba(120, 216, 179, 0.58) 0%,
        rgba(120, 216, 179, 0.58) var(--progress-value),
        rgba(139, 158, 177, 0.18) var(--progress-value),
        rgba(139, 158, 177, 0.18) 100%
    );
    outline: none;
    cursor: pointer;
}

.seek-bar:disabled {
    opacity: 0.5;
    cursor: default;
}

.seek-bar::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 999px;
    background: linear-gradient(
        90deg,
        rgba(120, 216, 179, 0.58) 0%,
        rgba(120, 216, 179, 0.58) var(--progress-value),
        rgba(139, 158, 177, 0.18) var(--progress-value),
        rgba(139, 158, 177, 0.18) 100%
    );
}

.seek-bar::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    margin-top: -4px;
    border: 2px solid rgba(6, 9, 13, 0.92);
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px rgba(120, 216, 179, 0.16);
}

.seek-bar::-moz-range-track {
    height: 6px;
    border: 0;
    border-radius: 999px;
    background: rgba(139, 158, 177, 0.18);
}

.seek-bar::-moz-range-progress {
    height: 6px;
    border-radius: 999px;
    background: rgba(120, 216, 179, 0.42);
}

.seek-bar::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(6, 9, 13, 0.92);
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px rgba(120, 216, 179, 0.16);
}

.native-audio {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
    pointer-events: none;
}

.mode-switch label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--muted);
    font-size: 11px;
}

.status {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--muted);
    font-size: 11px;
}

.status-updated {
    background: rgba(120, 216, 179, 0.18);
    color: #9ff0d5;
}

.status-scanning {
    background: rgba(255, 210, 124, 0.18);
    color: var(--warning);
}

.status-no-changes,
.status-cache {
    background: rgba(169, 188, 255, 0.18);
    color: var(--info);
}

.status-error,
.status-missing,
.status-mount-missing {
    background: rgba(255, 131, 152, 0.12);
    color: var(--danger);
}

.banner {
    margin-top: 12px;
    padding: 10px 12px;
    font-size: 12px;
}

.banner-error {
    border-color: rgba(255, 131, 152, 0.24);
    color: var(--danger);
    background: rgba(255, 131, 152, 0.08);
}

.workspace {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 12px;
    height: calc(100vh - var(--app-top-offset) - 14px);
    margin-top: 12px;
    min-height: 0;
}

.tree-pane,
.files-pane {
    height: 100%;
    min-height: 0;
    overflow: hidden;
}

.tree-pane {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
}

.sidebar-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    padding: 10px 12px 0;
}

.sidebar-tab {
    min-height: 34px;
    padding: 7px 10px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
}

.sidebar-tab.is-active {
    border-color: rgba(120, 216, 179, 0.42);
    background: rgba(120, 216, 179, 0.1);
    color: #9ff0d5;
}

.sidebar-panel {
    min-height: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
}

.files-pane {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
}

.pane-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px 8px;
}

.pane-top-tree {
    padding-bottom: 10px;
}

.pane-top-main {
    min-width: 0;
    display: grid;
    gap: 3px;
}

.pane-title {
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.selection-meta,
.path-trail {
    color: var(--muted);
    font-size: 11px;
}

.selection-meta,
.path-trail {
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tree-browser {
    min-height: 0;
    margin: 0 12px 12px;
    border-radius: 14px;
    border: 1px solid rgba(139, 158, 177, 0.12);
    background: rgba(255, 255, 255, 0.02);
    overflow: hidden;
}

.tree-level-card {
    height: 100%;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
}

.tree-level-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 12px;
    border-bottom: 1px solid rgba(139, 158, 177, 0.12);
}

.tree-level-title {
    font-size: 13px;
    font-weight: 600;
}

.tree-level-meta {
    color: var(--muted);
    font-size: 11px;
}

.tree-level-list {
    min-height: 0;
    display: grid;
    gap: 6px;
    padding: 10px;
    overflow: auto;
    align-content: start;
}

.tree-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px;
}

.tree-row-actions {
    display: inline-flex;
    gap: 4px;
}

.tree-nav {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 9px 11px;
    text-align: left;
    cursor: pointer;
    border-radius: 11px;
    border: 1px solid var(--line);
    background: var(--panel-3);
    color: var(--text);
}

.tree-nav.is-active {
    border-color: rgba(120, 216, 179, 0.42);
    background: rgba(120, 216, 179, 0.1);
}

.tree-nav-main {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.tree-nav-folder {
    color: var(--accent);
    font-size: 13px;
}

.tree-nav-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
}

.tree-nav-arrow {
    color: var(--muted);
    font-size: 11px;
}

.tree-load.is-selected {
    border-color: rgba(120, 216, 179, 0.5);
    background: rgba(120, 216, 179, 0.18);
    color: #9ff0d5;
}

.tree-slide-empty {
    color: var(--muted);
    font-size: 11px;
}

.playlist-browser {
    min-height: 0;
    margin: 0 12px 12px;
    border-radius: 14px;
    border: 1px solid rgba(139, 158, 177, 0.12);
    background: rgba(255, 255, 255, 0.02);
    overflow: auto;
}

.playlist-list {
    display: grid;
    gap: 6px;
    padding: 10px;
}

.playlist-row {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 9px 10px;
    text-align: left;
    cursor: pointer;
}

.playlist-row.is-active {
    border-color: rgba(120, 216, 179, 0.42);
    background: rgba(120, 216, 179, 0.1);
}

.playlist-row-main {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.playlist-row-name,
.playlist-choice-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
}

.playlist-row-meta,
.playlist-choice-meta {
    color: var(--muted);
    font-size: 10px;
}

.playlist-modal {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: grid;
    place-items: center;
    padding: 18px;
}

.playlist-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4, 8, 12, 0.72);
    backdrop-filter: blur(10px);
}

.playlist-modal-card {
    position: relative;
    z-index: 1;
    width: min(560px, calc(100vw - 36px));
    max-height: min(80vh, 720px);
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    gap: 12px;
    padding: 14px;
    border-radius: 18px;
    border: 1px solid rgba(139, 158, 177, 0.18);
    background: rgba(12, 18, 24, 0.96);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.42);
}

.playlist-modal-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.playlist-modal-copy {
    min-width: 0;
    display: grid;
    gap: 4px;
}

.playlist-modal-title {
    font-size: 18px;
    font-weight: 700;
}

.playlist-modal-context {
    color: var(--muted);
    font-size: 12px;
    word-break: break-word;
}

.playlist-choice-list {
    min-height: 120px;
    max-height: min(46vh, 420px);
    display: grid;
    gap: 8px;
    align-content: start;
    overflow: auto;
}

.playlist-choice {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    text-align: left;
    cursor: pointer;
}

.playlist-create-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
}

.playlist-create-form input {
    width: 100%;
    min-height: 38px;
    padding: 9px 12px;
    border-radius: 11px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--text);
}

.file-list {
    list-style: none;
    margin: 0;
    padding: 0 8px 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    height: 100%;
    min-height: 0;
    overflow: auto;
    overscroll-behavior: contain;
    align-items: stretch;
}

.file-group {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
}

.file-group-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    padding: 0;
}

.file-group-title {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: #c8d5e2;
}

.file-group-meta {
    color: var(--muted);
    font-size: 10px;
}

.file-group-body {
    display: grid;
    grid-template-columns: 184px minmax(0, 1fr);
    gap: 8px;
    align-items: start;
}

.file-group-art {
    position: relative;
    width: 184px;
    min-width: 184px;
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(139, 158, 177, 0.18);
    background: rgba(255, 255, 255, 0.03);
}

.file-group-image,
.file-group-placeholder {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.file-group-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(230, 237, 245, 0.48);
    font-size: 9px;
    letter-spacing: 0.12em;
}

.file-group-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
    justify-content: flex-start;
}

.file-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px;
    align-items: stretch;
}

.file-button {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 2px;
    width: 100%;
    padding: 6px 8px;
    cursor: pointer;
    text-align: left;
    font-size: 12px;
    font-weight: 400;
    line-height: 1.25;
}

.file-item.is-active .file-button {
    border-color: rgba(120, 216, 179, 0.42);
    background: rgba(120, 216, 179, 0.1);
}

.file-name {
    color: var(--text);
    font-size: 12px;
    font-weight: 400;
}

.file-meta {
    color: var(--muted);
    font-size: 10px;
    line-height: 1.2;
}

.file-add-button {
    align-self: stretch;
}

.playlist-tracks {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.playlist-track-header {
    display: grid;
    grid-template-columns: minmax(0, 2.2fr) minmax(120px, 1fr) minmax(120px, 1fr) 72px 40px;
    gap: 8px;
    padding: 0 6px;
    color: var(--muted);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.playlist-track-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    justify-content: flex-start;
}

.playlist-track-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px;
}

.playlist-track-button {
    width: 100%;
    display: grid;
    grid-template-columns: minmax(0, 2.2fr) minmax(120px, 1fr) minmax(120px, 1fr) 72px;
    gap: 8px;
    align-items: center;
    padding: 7px 8px;
    cursor: pointer;
    text-align: left;
    font-size: 12px;
}

.playlist-track-row.is-active .playlist-track-button {
    border-color: rgba(120, 216, 179, 0.42);
    background: rgba(120, 216, 179, 0.1);
}

.playlist-track-row.is-missing .playlist-track-button {
    opacity: 0.52;
}

.playlist-track-title,
.playlist-track-artist,
.playlist-track-album,
.playlist-track-year {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.playlist-track-year {
    color: var(--muted);
    text-align: right;
}

.empty-state,
.tree-error {
    margin: 0 12px 12px;
    padding: 18px;
    border-radius: 14px;
    border: 1px dashed var(--line);
    background: rgba(255, 255, 255, 0.03);
    color: var(--muted);
    overflow: auto;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.login-body {
    display: grid;
    place-items: center;
    padding: 18px;
}

.login-card {
    width: min(360px, 100%);
    padding: 22px;
}

.login-card h1 {
    margin: 10px 0 6px;
    font-size: 24px;
}

.login-mark {
    color: var(--accent);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.login-note,
.login-label {
    color: var(--muted);
    font-size: 12px;
}

.login-note {
    margin: 0 0 16px;
}

.login-error {
    margin-bottom: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 131, 152, 0.22);
    background: rgba(255, 131, 152, 0.12);
    color: var(--danger);
    font-size: 12px;
}

.login-form {
    display: grid;
    gap: 10px;
}

.login-form input {
    padding: 10px 12px;
}

@media (max-width: 1120px) {
    .workspace {
        grid-template-columns: 1fr;
        height: auto;
        overflow: auto;
    }

    .tree-pane,
    .files-pane {
        min-height: 320px;
    }

    .tree-pane {
        grid-template-rows: auto minmax(260px, 1fr);
    }
}

@media (max-width: 840px) {
    .app-shell {
        padding-top: calc(var(--app-top-offset) + 16px);
    }

    .transport-strip {
        width: 100%;
        min-width: 0;
    }

    .playlist-track-header,
    .playlist-track-button {
        grid-template-columns: minmax(0, 1.8fr) minmax(0, 1fr) minmax(0, 1fr) 52px;
    }

    .file-group-body {
        grid-template-columns: 1fr;
    }

    .file-group-art {
        width: 100%;
        max-width: 184px;
    }
}

@media (max-width: 640px) {
    .playlist-create-form {
        grid-template-columns: 1fr;
    }

    .playlist-track-header {
        display: none;
    }

    .playlist-track-button {
        grid-template-columns: 1fr;
    }

    .playlist-track-year {
        text-align: left;
    }
}