:root {
    --bg: #111116;
    --panel: #181820;
    --panel-2: #1f1f28;
    --ink: #e9e9ee;
    --muted: #a7a7b3;
    --accent: #8b5cf6; /* purple */
    --accent-2: #6d28d9; /* deeper purple */
    --card: #15151c;
    --danger: #ef4444;
    --ok: #22c55e;
    --ring: 0 0 0 2px color-mix(in oklab, var(--accent) 50%, transparent);
    --shadow: 0 10px 30px rgba(0,0,0,.35);
    --radius: 16px;
}

* {
    box-sizing: border-box
}

html, body {
    height: 100%
}

body {
    margin: 0;
    font: 16px/1.45 Inter, ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
    background: radial-gradient(1200px 800px at 30% -10%, #24183b 0%, transparent 40%), var(--bg);
    color: var(--ink);
}

.app {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh
}

.sidebar {
    background: linear-gradient(180deg, #14131a 0%, #0f0f14 100%);
    border-right: 1px solid #20202a;
    padding: 20px;
    position: sticky;
    top: 0;
    height: 100dvh;
}

.brand {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 20px
}

.logo {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg,var(--accent),var(--accent-2));
    border-radius: 12px;
    box-shadow: var(--shadow);
    font-weight: 800;
}

.brand-text h1 {
    margin: 0;
    font-size: 1.1rem
}

.brand-text p {
    margin: 2px 0 0;
    color: var(--muted);
    font-size: .85rem
}

.nav .lists {
    list-style: none;
    margin: 16px 0 0;
    padding: 0
}

    .nav .lists li {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        border-radius: 12px;
        color: var(--muted);
    }

        .nav .lists li.active, .nav .lists li:hover {
            background: #171722;
            color: var(--ink)
        }

    .nav .lists .dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent)
    }

.main {
    padding: 28px 28px 60px
}

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

    .toolbar h2 {
        margin: 0;
        font-size: 1.35rem
    }

.search-wrap {
    flex: 1;
    max-width: 360px
}

    .search-wrap input {
        width: 100%;
        background: #101018;
        border: 1px solid #2a2a35;
        color: var(--ink);
        padding: 10px 12px;
        border-radius: 12px;
        outline: none;
    }

        .search-wrap input:focus {
            border-color: var(--accent);
            box-shadow: var(--ring)
        }

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

/* Track card */
.track {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    align-items: center;
    background: linear-gradient(180deg, var(--card), #101019);
    border: 1px solid #232333;
    border-radius: 14px;
    padding: 12px 14px;
    box-shadow: var(--shadow);
}

.avatar {
    width: 46px;
    height: 46px;
    border-radius: 10px;
    flex: 0 0 46px;
    background: radial-gradient(60% 60% at 30% 30%, #2d2642 0%, #201a34 60%, #171424 100%);
    border: 1px solid #2b2b3a;
    display: grid;
    place-items: center;
    font-size: 20px;
    color: #cfc7ff;
}

.meta {
    min-width: 0
}

.title {
    margin: 0;
    font-weight: 700
}

.artist {
    margin: 2px 0 0;
    color: var(--muted);
    font-size: .9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.notes {
    margin: 6px 0 0;
    color: #b9b9c7;
    font-size: .85rem;
    word-break: break-word
}

.actions {
    display: flex;
    gap: 8px
}

.btn, .icon-btn {
    border: none;
    cursor: pointer;
    border-radius: 12px;
    padding: 10px 12px;
    background: #1a1a24;
    color: var(--ink);
    transition: .2s ease;
}

    .btn.primary {
        background: linear-gradient(135deg,var(--accent),var(--accent-2));
        color: white
    }

    .btn.ghost {
        background: #12121a;
        color: var(--muted);
        border: 1px solid #2b2b36
    }

    .btn.danger {
        background: linear-gradient(135deg,#ef4444,#b91c1c);
        color: white
    }

    .btn:hover {
        transform: translateY(-1px)
    }

.icon-btn {
    padding: 6px 10px;
    background: #14141c;
    border: 1px solid #2a2a37
}

.w-full {
    width: 100%
}

/* Slide-over panel */
.panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 380px;
    height: 100dvh;
    background: var(--panel);
    border-left: 1px solid #262634;
    box-shadow: -20px 0 50px rgba(0,0,0,.45);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    z-index: 30;
}

.hidden {
    display: none
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px
}

    .field span {
        color: var(--muted);
        font-size: .9rem
    }

    .field input, .field textarea {
        background: #0f0f16;
        border: 1px solid #2a2a36;
        color: var(--ink);
        padding: 10px 12px;
        border-radius: 12px;
        outline: none;
    }

        .field input:focus, .field textarea:focus {
            border-color: var(--accent);
            box-shadow: var(--ring)
        }

.panel-actions {
    display: flex;
    gap: 8px;
    margin-top: 4px
}

/* Dialog */
.confirm {
    background: var(--panel-2);
    border: 1px solid #2b2b38;
    color: var(--ink);
    padding: 18px;
    border-radius: 14px;
}

    .confirm::backdrop {
        background: rgba(0,0,0,.6)
    }

    .confirm h4 {
        margin: 0 0 6px
    }

    .confirm p {
        margin: 0 0 14px;
        color: var(--muted)
    }

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

/* Responsive */
@media (max-width: 860px) {
    .app {
        grid-template-columns: 1fr
    }

    .sidebar {
        position: static;
        height: auto
    }

    .panel {
        width: 100%
    }
}