:root {
    --bg: #0f172a;
    --bg-soft: #111827;
    --panel: #162033;
    --panel-2: #1d2a44;
    --line: #24324d;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --accent: #35c1a0;
    --accent-2: #60a5fa;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
    --radius: 18px;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(96, 165, 250, 0.14), transparent 26%),
        radial-gradient(circle at top right, rgba(53, 193, 160, 0.12), transparent 22%),
        linear-gradient(180deg, #09111f 0%, #0f172a 52%, #0b1220 100%);
    color: var(--text);
}

body.modal-open {
    overflow: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code, .inline-code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.app-shell {
    min-height: 100vh;
}

.app-frame {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
}

.setup-shell .app-frame {
    grid-template-columns: 1fr;
}

.setup-shell .workspace {
    width: min(1100px, calc(100vw - 48px));
    margin: 0 auto;
}

.sidebar {
    padding: 24px;
    border-right: 1px solid rgba(255,255,255,.06);
    background: rgba(7, 12, 23, 0.6);
    backdrop-filter: blur(16px);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.brand, .login-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: white;
    font-weight: 800;
    letter-spacing: .03em;
    box-shadow: 0 8px 20px rgba(96,165,250,.25);
}

.brand-name {
    font-size: 1.02rem;
    font-weight: 700;
}

.brand-subtitle, .eyebrow, .stat-label, .stat-footnote, .playlist-link span, .thumb-card span,
.palette-item span, .timeline-item span, .meta-line, .topbar-meta, .section-label {
    color: var(--muted);
}

.nav {
    display: grid;
    gap: 8px;
}

.nav a, .playlist-link {
    padding: 12px 14px;
    border-radius: 14px;
    background: transparent;
    color: var(--text);
    border: 1px solid transparent;
}

.nav a:hover, .playlist-link:hover, .nav a.active, .playlist-link.active {
    background: rgba(96,165,250,.12);
    border-color: rgba(96,165,250,.18);
}

.sidebar-footer { margin-top: auto; }

.workspace {
    padding: 26px;
    display: grid;
    gap: 20px;
}

.topbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
}

.topbar h1 {
    margin: 6px 0 0;
    font-size: 2rem;
    letter-spacing: -0.03em;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: .16em;
    font-size: .72rem;
}

.notice {
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,.08);
    background: rgba(255,255,255,.04);
    box-shadow: var(--shadow);
}

.notice-success { border-color: rgba(16,185,129,.22); }
.notice-error { border-color: rgba(239,68,68,.25); }
.notice-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.panel, .stat-card, .login-card {
    background: linear-gradient(180deg, rgba(22,32,51,.98), rgba(17,24,39,.98));
    border: 1px solid rgba(255,255,255,.07);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.panel { padding: 18px; }

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

.panel-head h2, .panel h3 {
    margin: 0;
}

.panel-actions, .button-row, .form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.grid {
    display: grid;
    gap: 18px;
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-card {
    padding: 18px;
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 8px 0 6px;
}

.dashboard-columns {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 18px;
}

.table-wrap {
    overflow: auto;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,.06);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255,255,255,.06);
    text-align: left;
}

.mini-grid {
    display: grid;
    gap: 10px;
}

.thumb-card {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 10px;
    border-radius: 14px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.06);
}

.thumb-card img, .palette-item img, .timeline-item img {
    width: 72px;
    height: 56px;
    object-fit: cover;
    border-radius: 12px;
    background: #000;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.form-grid label, .stack label, .artwork-card label, .screen-card label, .settings-card label {
    display: grid;
    gap: 6px;
}

.form-grid span, .stack span, .artwork-card span, .screen-card span, .settings-card span {
    font-size: .82rem;
    color: var(--muted);
}

input, select, textarea, button {
    font: inherit;
}

input, select, textarea {
    width: 100%;
    color: var(--text);
    background: rgba(8,12,21,.9);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 12px;
    padding: 10px 12px;
    outline: none;
}

textarea { resize: vertical; }

input:focus, select:focus, textarea:focus {
    border-color: rgba(96,165,250,.42);
    box-shadow: 0 0 0 4px rgba(96,165,250,.08);
}

.span-2 { grid-column: span 2; }

.button {
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 999px;
    padding: 10px 16px;
    cursor: pointer;
    color: var(--text);
    background: rgba(255,255,255,.06);
    transition: transform .15s ease, background .15s ease, border-color .15s ease;
    flex: 0 0 auto;
    min-width: 120px;
    text-align: center;
}

.button:hover { transform: translateY(-1px); }
.button-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-color: transparent; color: #06121f; font-weight: 700; }
.button-secondary { background: rgba(255,255,255,.06); }
.button-danger { background: rgba(239,68,68,.14); border-color: rgba(239,68,68,.22); }
.button-block { width: 100%; }

.inline-form, .create-playlist {
    margin: 0;
}

.stack {
    display: grid;
    gap: 12px;
}

.artwork-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 14px;
}

.artwork-grid-tight {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.artwork-tile {
    padding: 12px;
    border-radius: 18px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.07);
    display: grid;
    gap: 10px;
}

.artwork-tile img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 14px;
    background: #000;
}

.button-small {
    min-width: 0;
    padding: 8px 12px;
    font-size: .92rem;
}

.artwork-card, .screen-card {
    padding: 14px;
    border-radius: 18px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.07);
    display: grid;
    gap: 10px;
}

.artwork-delete {
    margin-top: -2px;
}

.panel-subtitle {
    color: var(--muted);
    margin-top: 4px;
    font-size: .92rem;
}

.playlist-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.playlist-card {
    border-radius: 20px;
    overflow: hidden;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.07);
    box-shadow: var(--shadow);
    display: grid;
}

.playlist-card-thumb {
    display: block;
    background: #050816;
}

.playlist-card-thumb img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.playlist-card-placeholder {
    aspect-ratio: 16 / 9;
    display: grid;
    place-items: center;
    color: var(--muted);
    background: linear-gradient(135deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
}

.playlist-card-body {
    padding: 16px;
    display: grid;
    gap: 12px;
}

.playlist-card h3 {
    margin: 0;
    font-size: 1.1rem;
}

.playlist-card-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: .88rem;
    margin-top: 6px;
}

.playlist-card-description {
    margin: 0;
    color: var(--muted);
    min-height: 2.6em;
}

.playlist-create-form {
    margin-top: 8px;
}

.playlist-editor-shell {
    display: grid;
    gap: 14px;
}

.playlist-editor-form {
    min-width: 0;
}

.playlist-editor-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
}

.playlist-editor-header h1 {
    margin: 4px 0 0;
    font-size: clamp(1.7rem, 2.4vw, 2.4rem);
}

.playlist-editor-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.playlist-editor-summary > div {
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.06);
    display: grid;
    gap: 6px;
}

.playlist-editor-summary span {
    color: var(--muted);
    font-size: .82rem;
}

.playlist-editor-summary strong {
    font-size: .98rem;
    font-weight: 600;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .68);
    display: grid;
    place-items: center;
    padding: 20px;
    z-index: 50;
}

.modal-backdrop[hidden] {
    display: none !important;
}

.modal-card {
    width: min(640px, 100%);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(22,32,51,.99), rgba(17,24,39,.99));
    border: 1px solid rgba(255,255,255,.08);
    box-shadow: var(--shadow);
    padding: 18px;
}

.modal-head {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    margin-bottom: 14px;
}

.modal-body {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 18px;
}

.modal-thumb {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 16px;
    background: #000;
}

.modal-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.modal-form-wide {
    width: 100%;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.icon-button {
    width: 38px;
    height: 38px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,.08);
    background: rgba(255,255,255,.06);
    color: var(--text);
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
}

.screen-main {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.screen-foot {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
}

.meta-line {
    display: grid;
    gap: 6px;
}

.check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .92rem;
}

.check input {
    width: auto;
}

.playlists-shell {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr) 280px;
    gap: 18px;
    align-items: start;
}

.playlists-list, .artwork-palette, .playlist-editor {
    min-height: 100%;
}

.playlist-links {
    display: grid;
    gap: 8px;
    margin-top: 12px;
}

.playlist-link {
    display: grid;
    gap: 2px;
}

.playlist-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) 340px;
    gap: 16px;
}

.playlist-column {
    display: grid;
    gap: 12px;
}

.timeline {
    min-height: 190px;
    padding: 12px;
    border-radius: 18px;
    border: 1px dashed rgba(255,255,255,.12);
    background: rgba(8, 12, 21, .45);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    align-items: start;
    overflow: hidden;
    position: relative;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}

.timeline.is-over {
    border-color: rgba(96,165,250,.5);
    background: rgba(96,165,250,.08);
}

.timeline:empty::before {
    content: attr(data-empty-text);
    color: var(--muted);
    display: grid;
    place-items: center;
    min-width: 100%;
    min-height: 100%;
    font-size: .96rem;
}

.timeline-wide {
    width: 100%;
    min-height: 220px;
}

.drop-marker {
    min-height: 8px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(96,165,250,.35), rgba(53,193,160,.95));
    box-shadow: 0 0 0 4px rgba(96,165,250,.08);
    pointer-events: none;
    grid-column: 1 / -1;
}

.timeline-item {
    width: 100%;
    min-width: 0;
    display: grid;
    gap: 8px;
    padding: 10px;
    border-radius: 16px;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.08);
    cursor: pointer;
    align-content: start;
    position: relative;
}

.timeline-item.active, .palette-item:active {
    outline: 2px solid rgba(96,165,250,.55);
}

.timeline-item strong, .palette-item strong {
    display: block;
}

.timeline-handle, .timeline-action {
    border: 1px solid rgba(255,255,255,.08);
    background: rgba(255,255,255,.06);
    color: var(--text);
}

.timeline-handle {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    cursor: grab;
    font-size: 1rem;
    line-height: 1;
}

.timeline-handle:active {
    cursor: grabbing;
}

.timeline-title-block {
    min-width: 0;
    display: grid;
    gap: 2px;
}

.timeline-title-block strong {
    font-size: .95rem;
    color: var(--text);
}

.timeline-title-block span {
    font-size: .82rem;
}

.timeline-item-actions {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
}

.timeline-action {
    min-width: 34px;
    height: 30px;
    border-radius: 10px;
    cursor: pointer;
    padding: 0 9px;
    line-height: 1;
}

.timeline-action.danger {
    background: rgba(239,68,68,.14);
    border-color: rgba(239,68,68,.22);
}

.timeline-item img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: 14px;
}

.timeline-item.drop-before,
.timeline-item.drop-after {
    border-color: rgba(96,165,250,.55);
    box-shadow: inset 0 0 0 1px rgba(96,165,250,.15);
}

.timeline-item.drop-before::before,
.timeline-item.drop-after::after {
    content: "";
    position: absolute;
    left: 12px;
    right: 12px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(96,165,250,.2), rgba(53,193,160,.95));
    box-shadow: 0 0 0 4px rgba(96,165,250,.08);
    pointer-events: none;
}

.timeline-item.drop-before::before {
    top: 8px;
}

.timeline-item.drop-after::after {
    bottom: 8px;
}

.timeline-item-top {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px;
    align-items: start;
}

.timeline-handle {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    cursor: grab;
    font-size: 1rem;
    line-height: 1;
    flex: 0 0 auto;
}

.timeline-handle:active {
    cursor: grabbing;
}

.settings-card, .preview-shell {
    padding: 14px;
    border-radius: 18px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.07);
}

.preview-stage {
    min-height: 190px;
    border-radius: 14px;
    background: linear-gradient(180deg, #020617, #0f172a);
    border: 1px solid rgba(255,255,255,.06);
    display: grid;
    place-items: center;
    overflow: hidden;
}

.preview-stage .preview-inner {
    width: 100%;
    height: 100%;
    display: grid;
    gap: 10px;
    align-content: center;
    justify-items: center;
    text-align: center;
    padding: 18px;
}

.preview-stage img {
    max-height: 120px;
    width: auto;
    border-radius: 14px;
}

.palette-grid-wide {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.palette-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.drop-marker {
    display: none;
}

.palette-item {
    padding: 10px;
    display: grid;
    gap: 10px;
    align-items: start;
    border-radius: 16px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.07);
    cursor: grab;
    width: 100%;
    min-width: 0;
}

.palette-item img {
    width: 100%;
    height: 110px;
    object-fit: cover;
    border-radius: 12px;
}

.palette-item div {
    min-width: 0;
}

.palette-item span {
    display: block;
}

.palette-item:active {
    cursor: grabbing;
}

.login-panel {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(440px, 100%);
    padding: 24px;
}

.login-card .stack {
    margin-top: 22px;
}

.setup-panel {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    align-items: start;
    width: min(960px, 100%);
    margin: 0 auto;
}

.setup-intro p {
    color: var(--muted);
    line-height: 1.6;
    margin: 10px 0 0;
}

.setup-note {
    margin-top: 18px;
    display: grid;
    gap: 4px;
    padding: 14px;
    border-radius: 16px;
    background: rgba(96,165,250,.08);
    border: 1px solid rgba(96,165,250,.14);
}

.setup-note strong {
    font-size: .92rem;
}

.setup-note span {
    color: var(--muted);
    line-height: 1.5;
}

.setup-form-panel {
    padding: 24px;
    overflow: visible;
}

.setup-form-panel .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.setup-section-title {
    font-size: .88rem;
    text-transform: uppercase;
    letter-spacing: .14em;
    color: var(--muted);
    margin-top: 6px;
}

.setup-form {
    margin-top: 14px;
}

.setup-actions {
    display: flex;
    justify-content: flex-end;
    padding-top: 4px;
}

.field-error {
    color: #fca5a5;
    font-size: .8rem;
}

.hint {
    color: var(--muted);
    font-size: .78rem;
}

.empty-state {
    padding: 30px;
    color: var(--muted);
    text-align: center;
    border: 1px dashed rgba(255,255,255,.12);
    border-radius: 18px;
}

@media (max-width: 1200px) {
    .app-frame, .playlists-shell, .dashboard-columns, .playlist-layout {
        grid-template-columns: 1fr;
    }

    .playlist-editor-summary {
        grid-template-columns: 1fr;
    }

    .sidebar {
        border-right: 0;
        border-bottom: 1px solid rgba(255,255,255,.06);
    }
}

@media (max-width: 760px) {
    .workspace { padding: 16px; }
    .grid-3, .form-grid, .screen-main {
        grid-template-columns: 1fr;
    }
    .modal-body, .modal-form {
        grid-template-columns: 1fr;
    }
    .playlist-editor-header {
        flex-direction: column;
    }
    .playlist-card-grid {
        grid-template-columns: 1fr;
    }
    .setup-panel {
        grid-template-columns: 1fr;
        width: 100%;
    }
    .span-2 { grid-column: auto; }
    .topbar {
        align-items: flex-start;
        flex-direction: column;
    }
    .panel-head, .screen-foot {
        align-items: flex-start;
        flex-direction: column;
    }
}