.shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: #ffffff;
}

.brand {
    display: block;
    color: #0f172a;
    font-size: 1.25rem;
    font-weight: bold;
    text-decoration: none;
}

.content {
    min-width: 0;
}

.page-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    margin: 0 0 8px;
    font-size: 1.75rem;
}

.page-header p {
    margin: 0;
    color: #6c757d;
}

.eyebrow {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 0.5rem;
}

.card,
.stat-card {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 1rem;
    box-shadow: 0 0.5rem 1rem rgba(15, 23, 42, 0.05);
}

.stat-card {
    padding: 1.25rem;
}

.card {
    overflow: hidden;
}

.card > form,
.card > p,
.card > .row,
.card > .vstack {
    padding: 1.25rem;
}

.card > p:last-child,
.card > form:last-child,
.card > .row:last-child,
.card > .vstack:last-child {
    margin-bottom: 0;
}

.card-grid,
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    margin: 0.5rem 0;
}

.button-row,
.actions,
.form-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.actions form {
    margin: 0;
}

.button,
.button-secondary {
    display: inline-block;
    padding: 0.625rem 1rem;
    border-radius: 0.75rem;
    text-decoration: none;
    border: 1px solid transparent;
    font-weight: 500;
}

.button {
    background: #0d6efd;
    color: #fff;
}

.button-secondary {
    background: #fff;
    border-color: #ced4da;
    color: #212529;
}

.link-button {
    background: transparent;
    color: #dc3545;
    padding: 0;
    border: 0;
}

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

.data-table th,
.data-table td {
    text-align: left;
    padding: 0.875rem 0.75rem;
    border-bottom: 1px solid #dee2e6;
    vertical-align: top;
}

.muted {
    color: #6c757d;
    font-size: 0.9rem;
}

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

.form-grid label {
    display: grid;
    gap: 0.5rem;
    font-weight: 600;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
    width: 100%;
    border: 1px solid #ced4da;
    border-radius: 0.75rem;
    padding: 0.625rem 0.875rem;
    font: inherit;
    background: #fff;
}

.form-grid input[readonly] {
    background: #f8f9fa;
    color: #6c757d;
}

.help-text {
    color: #6c757d;
    font-size: 0.85rem;
    font-weight: 400;
    line-height: 1.5;
}

.full-width {
    grid-column: 1 / -1;
}

.checkbox-field {
    display: flex !important;
    align-items: center;
    gap: 0.625rem !important;
    font-weight: 600;
}

.checkbox-field input {
    width: auto;
}

.play-card {
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 1rem;
}

.play-option {
    border: 1px solid #dee2e6;
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
    background: #fff;
}

.result-metric {
    min-width: 180px;
}

@media (max-width: 900px) {
    .shell {
        grid-template-columns: 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }
}