body {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    height: 100dvh;
    overflow: hidden;
}

.app-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 1rem;
    width: 100%;
    max-width: 1500px;
    margin: 0 auto;
    padding: 1rem clamp(1rem, 2vw, 2rem);
    min-height: 0;
    position: relative;
    z-index: 1;
}

.editor-pane {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
}

#text-editor {
    flex: 1;
    display: flex;
    min-width: 0;
    min-height: 0;
}

.side-pane {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow-y: auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: rgba(99, 102, 241, 0.2) transparent;
}

.side-pane > section {
    padding: 0.7rem 0.85rem;
}

/* voices card absorbs leftover height so the pane meets the editor's bottom edge */
.side-pane > .voice-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: min-content;
}

/* fixed-height cards: a status message borrows height from the voice list, not these */
.side-pane > .settings-card,
.side-pane > .generate-card {
    flex-shrink: 0;
}

/* keep generate reachable even when the pane has to scroll */
.side-pane > .generate-card {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    position: sticky;
    bottom: 0;
    background: rgba(30, 41, 59, 0.92);
    backdrop-filter: blur(8px);
}

.side-pane > section + section {
    border-top: 1px solid var(--border);
}

.side-pane::-webkit-scrollbar {
    width: 6px;
}

.side-pane::-webkit-scrollbar-track {
    background: transparent;
}

.side-pane::-webkit-scrollbar-thumb {
    background-color: rgba(99, 102, 241, 0.2);
    border-radius: 3px;
}

@media (max-width: 900px) {
    body {
        display: flex;
        flex-direction: column;
        height: auto;
        min-height: 100dvh;
        overflow: visible;
    }

    .app-shell {
        grid-template-columns: 1fr;
        padding: 0.75rem;
        gap: 0.75rem;
    }

    .side-pane {
        overflow: visible;
    }

    /* pane doesn't scroll here and the dock is already sticky */
    .side-pane > .generate-card {
        position: static;
        backdrop-filter: none;
    }
}