/* WebCart – radio cart deck styling */
:root {
    --bg-dark: #0f172a;
    --bg-panel: #1e293b;
    --bg-button: #334155;
    --accent: #38bdf8;
    --accent-hover: #7dd3fc;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #475569;
    --danger: #f87171;
    --font-sans: "DM Sans", "Segoe UI", system-ui, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg-dark);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.4;
}

.app-main {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.cart-app {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: 1rem;
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.app-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.play-controls {
    display: flex;
    align-items: center;
}

.btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-panel);
    color: var(--text);
    font: inherit;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.btn:hover {
    background: var(--bg-button);
    border-color: var(--accent);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-play-pause {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.btn-play-pause:not(:disabled):hover {
    background: var(--accent);
    color: var(--bg-dark);
}

.btn-play-pause .icon-pause {
    display: none;
}

.btn-play-pause .icon-stop {
    display: none;
}

.btn-play-pause.playing .icon-play {
    display: none;
}

.btn-play-pause.playing .icon-stop {
    display: inline;
}

/* Gear button (semi-transparent) */
.cart-gear-btn {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: rgba(30, 41, 59, 0.5);
    color: var(--text-muted);
    opacity: 0.7;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s, background 0.2s, color 0.2s;
}

.cart-gear-btn:hover {
    opacity: 1;
    background: rgba(51, 65, 85, 0.8);
    color: var(--text);
}

.cart-gear-icon {
    width: 1.35rem;
    height: 1.35rem;
}

/* Drawer (slides from left, like clock app) */
.cart-drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 199;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.25s ease-out;
}

.cart-drawer-backdrop.is-visible {
    pointer-events: auto;
    opacity: 1;
}

.cart-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(280px, 85vw);
    max-width: 100%;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--border);
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.25s ease-out;
    overflow-y: auto;
    padding: 1.25rem;
    box-sizing: border-box;
}

.cart-drawer.is-open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.3);
}

.cart-drawer-inner {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.cart-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin: -0.25rem 0 0 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.cart-drawer-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

.cart-drawer-close {
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.cart-drawer-close:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
}

.cart-drawer-body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cart-drawer-body .cart-drawer-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.cart-drawer-body input[type="number"] {
    width: 4ch;
    padding: 0.35rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-dark);
    color: var(--text);
    font: inherit;
}

.cart-drawer-select {
    width: 100%;
    max-width: 100%;
    padding: 0.45rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-dark);
    color: var(--text);
    font: inherit;
}

.cart-drawer-section {
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}
.cart-drawer-section-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    display: block;
    margin-bottom: 0.5rem;
}
.cart-drawer-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0.25rem 0 0 0;
}
.cart-drawer-body .btn-save-grid {
    align-self: flex-start;
}

/* Cart grid */
.cart-grid-wrap {
    flex: 1;
    min-height: 200px;
}

.cart-grid {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(var(--cols, 4), 1fr);
    grid-template-rows: repeat(var(--rows, 3), minmax(100px, 1fr));
    max-height: calc(100vh - 220px);
}

.cart-cell {
    position: relative;
    min-height: 90px;
    border-radius: 10px;
    overflow: visible;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.1s, box-shadow 0.15s;
}

.cart-cell::before {
    content: "";
    position: absolute;
    inset: -12px;
    border-radius: 14px;
    z-index: -1;
    opacity: 0;
    box-shadow: 0 0 32px 12px rgba(56, 189, 248, 0),
                0 0 56px 20px rgba(56, 189, 248, 0);
    transition: opacity 0.2s ease, box-shadow 0.2s ease;
}

.cart-cell.playing::before {
    opacity: 1;
    box-shadow: 0 0 32px 12px rgba(56, 189, 248, 0.6),
                0 0 56px 20px rgba(56, 189, 248, 0.35);
}

.cart-cell:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.cart-cell .cart-btn {
    width: 100%;
    height: 100%;
    min-height: 90px;
    border: none;
    padding: 0.75rem 1.5rem 0.75rem 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    cursor: pointer;
    font: inherit;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    background: var(--cell-color, var(--bg-button));
    transition: filter 0.15s;
    position: relative;
}

.cart-cell .cart-btn:hover {
    filter: brightness(1.1);
}

.cart-cell .cart-btn:active {
    filter: brightness(0.95);
}

.cart-cell .cart-btn.playing {
    box-shadow: 0 0 20px 8px rgba(56, 189, 248, 0.4);
}
.cart-cell .cart-btn.playing .cart-duration {
    font-weight: 700;
    font-size: 0.95rem;
}

.cart-cell .cart-label {
    font-weight: 600;
    font-size: 0.95rem;
    text-align: center;
    word-break: break-word;
}

.cart-cell .cart-duration {
    font-size: 0.8rem;
    opacity: 0.9;
}

.cart-loop-icon {
    position: absolute;
    top: 6px;
    left: 8px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    line-height: 1;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

.time-warning {
    color: #f87171 !important;
    animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
    50% { opacity: 0.2; }
}

.cart-cell .cart-btn:not(.has-audio) {
    opacity: 0.85;
}

.cart-cell .cart-btn.has-audio {
    cursor: pointer;
}

.cart-meter {
    position: absolute;
    right: 6px;
    top: 8px;
    bottom: 8px;
    width: 10px;
    display: flex;
    flex-direction: column-reverse;
    gap: 2px;
    padding: 2px;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.cart-meter-block {
    width: 100%;
    flex: 1;
    border-radius: 2px;
    background: rgba(20, 24, 35, 0.7);
}

.cart-meter-block.active {
    background: #22c55e;
}

.cart-meter-block.active.warn {
    background: #eab308;
}

.cart-meter-block.active.hot {
    background: #ef4444;
}

.record-waveform {
    width: 100%;
    height: 90px;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
}

.record-preview {
    width: 100%;
}

.cart-cell .cart-btn.empty-cart {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Page tabs */
.page-tabs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0;
    flex-wrap: wrap;
}

.page-tab {
    padding: 0.4rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(30, 41, 59, 0.6);
    color: var(--text);
    font: inherit;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.page-tab:hover {
    background: rgba(51, 65, 85, 0.8);
    border-color: var(--accent);
}

.page-tab.is-active {
    background: var(--accent);
    color: var(--bg-dark);
    border-color: var(--accent);
}

.page-tab.add-tab {
    font-weight: 700;
    width: 2.25rem;
    text-align: center;
}

/* Footer: now playing + time remaining */
.app-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
    min-height: 2.5rem;
}

.now-playing {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.time-remaining {
    font-variant-numeric: tabular-nums;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-overlay[hidden] {
    display: none;
}

.modal {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    width: 100%;
    max-width: 400px;
}

.modal h2 {
    margin: 0 0 1rem;
    font-size: 1.25rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-group input[type="text"],
.form-group input[type="color"] {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-dark);
    color: var(--text);
    font: inherit;
}

.form-group input[type="color"] {
    height: 40px;
    padding: 2px;
    cursor: pointer;
}

.form-group input[type="file"] {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.file-name {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.25rem;
}

.btn-cancel {
    background: transparent;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-dark);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-danger {
    color: var(--danger);
    border-color: var(--danger);
}

.btn-danger:hover {
    background: rgba(248, 113, 113, 0.2);
    border-color: var(--danger);
}

/* Right-click context menu */
.context-menu {
    position: fixed;
    z-index: 1001;
    min-width: 180px;
    padding: 0.25rem 0;
    margin: 0;
    list-style: none;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.context-menu[hidden] {
    display: none;
}

.context-menu li {
    margin: 0;
}

.context-menu button {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
    border: none;
    background: none;
    color: var(--text);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.context-menu button:hover {
    background: var(--bg-button);
}

/* Responsive: fewer columns on small screens if auto */
@media (max-width: 600px) {
    .cart-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(auto-fill, minmax(90px, 1fr));
    }
}