.page-packs {
    display: grid;
    grid-template-columns: 300px 1fr 220px;
    gap: 1.5rem;

    padding: 2rem;
    box-sizing: border-box;

    height: calc(100vh - 4.5rem);
    overflow: hidden;
}

/* =========================
   PANELS
========================= */

.packs-sidebar,
.pack-content,
.pack-player {
    background: var(--panel-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-sizing: border-box;

    overflow-y: auto;
    min-height: 0;
}

.packs-sidebar h2,
.pack-player h2 {
    margin: 0 0 1rem;
    text-align: center;
}

/* =========================
   LEFT SIDEBAR
========================= */

.packs-sidebar {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pack-card {
    background: var(--color-background-hover);
    border-radius: 0.75rem;
    border-left: 5px solid transparent;

    padding: 1rem;

    cursor: pointer;
    transition: all .15s ease;
}

.pack-card:hover {
    transform: translateY(-2px);
    background: var(--panel-bg-hover);
}

.pack-card.active {
    background: var(--panel-bg-hover);
}

.pack-title {
    font-size: 1rem;
    font-weight: 700;
}

.pack-meta {
    margin-top: .35rem;
    opacity: .75;
    font-size: .9rem;
}

.pack-progress {
    width: 100%;
    height: 8px;
    margin-top: .75rem;

    border-radius: 999px;
    overflow: hidden;

    background: rgba(128,128,128,.25);
}

.pack-progress-fill {
    height: 100%;
    border-radius: 999px;
    transition: width .2s ease;
}

/* =========================
   MIDDLE PANEL
========================= */

.pack-content {
    display: flex;
    flex-direction: column;
}

.level-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;

    margin-top: 2rem;
}

.level-card {
    display: flex;
    align-items: center;
    gap: 1rem;

    padding: 1rem;

    border-radius: .75rem;

    background: var(--color-background-hover);

    transition: all .15s ease;
}

.level-card:hover {
    transform: translateY(-2px);
    background: var(--panel-bg-hover);
}

.level-status {
    width: 36px;
    text-align: center;
    font-size: 1.5rem;
}

.level-thumb {
    width: 140px;
    border-radius: .5rem;
    margin-left: auto;
}

/* =========================
   PLAYER PANEL
========================= */

.pack-player {
    display: flex;
    flex-direction: column;
}

/* Search box (matches list page) */

.pack-player .list-search {
    width: 100%;
    box-sizing: border-box;

    padding: 0.6rem 0.8rem;

    border: none;
    border-radius: 0.5rem;

    background: var(--panel-bg);
    color: var(--color-on-background);

    font: inherit;
    outline: none;

    transition: background 0.15s ease;
}

.pack-player .list-search:hover {
    background: var(--panel-bg-hover);
}

.pack-player .list-search:focus {
    background: var(--panel-bg-hover);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Search results */

.player-results {
    margin-top: .5rem;

    max-height: 350px;
    overflow-y: auto;

    border-radius: var(--border-radius);
    background: var(--panel-bg);
}

.player-result {
    padding: .75rem 1rem;
    cursor: pointer;

    transition: background .15s ease;
}

.player-result:hover {
    background: var(--panel-bg-hover);
}

.player-result + .player-result {
    border-top: 1px solid rgba(128,128,128,.15);
}

/* =========================
   SCROLLBARS
========================= */

.packs-sidebar::-webkit-scrollbar,
.pack-content::-webkit-scrollbar,
.player-results::-webkit-scrollbar {
    width: 8px;
}

.packs-sidebar::-webkit-scrollbar-thumb,
.pack-content::-webkit-scrollbar-thumb,
.player-results::-webkit-scrollbar-thumb {
    background: rgba(128,128,128,.35);
    border-radius: 999px;
}