*, *::before, *::after {
    box-sizing: border-box;
}

/* ==== FORM ELEMENTS ==== */

input,
select,
textarea {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid var(--color-text-secondary);
    border-radius: 4px;
    background-color: var(--color-background-primary);
    color: var(--color-text-primary);
    padding: 0.4rem 0.6rem;
    font-size: 0.95rem;
    line-height: 1.3;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--color-highlight-primary);
    outline: none;
    background-color: var(--color-background-secondary);
}

/* Placeholder color */
input::placeholder,
textarea::placeholder {
    color: var(--color-text-secondary);
}

/* Labels */
label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.2rem;
    color: var(--color-text-secondary);
}

/* Form layout helpers */
.form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-col {
    flex: 1;
    min-width: 200px;
}

.form-col label {
    margin-bottom: 0.1rem;
    font-size: 0.7rem;
    display: block;
    color: var(--color-text-secondary);
}

/* ==== BUTTONS ==== */

button, .btn{
    border: none;
    border-radius: 4px;
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease, transform 0.1s ease;
}

button:active, .btn:active {
    transform: scale(0.97);
}

button:disabled, .btn:disabled {
    background-color: var(--color-button-disabled-bg);
    color: var(--color-button-disabled-text);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-primary {
    background-color: var(--color-button-primary-bg);
    color: var(--color-button-primary-text);
}
.btn-primary:hover {
    background-color: var(--color-button-primary-hover-bg);
}

.btn-success {
    background-color: var(--color-button-success-bg);
    color: var(--color-button-success-text);
}
.btn-success:hover {
    background-color: var(--color-button-success-hover-bg);
}

.btn-secondary {
    background-color: var(--color-button-secondary-bg);
    color: var(--color-button-secondary-text);
}
.btn-secondary:hover {
    background-color: var(--color-button-secondary-hover-bg);
}

.btn-danger {
    background-color: var(--color-button-danger-bg);
    color: var(--color-button-danger-text);
}
.btn-danger:hover {
    background-color: var(--color-button-danger-hover-bg);
}

button.btn-sm, .btn.btn-sm {
    padding: 0.25rem 0.55rem;
    font-size: 0.8rem;
}

/* ==== CARD / PANEL ==== */

.card,
.panel {
    background-color: var(--color-background-primary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-text-secondary);
    border-radius: 4px;
    padding: 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    transition: background-color 0.2s ease, transform 0.15s ease;
}

.card:hover {
    border-color: var(--color-highlight-primary);
}

/* ==== LAYOUT UTILITIES ==== */

.ui-stack-md {
    display: grid;
    gap: 1rem;
}

.ui-grid-2 {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(320px, 1fr));
}

.ui-grid-auto-160 {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.ui-grid-auto-180 {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

/* ==== ADMIN LAYOUT PRIMITIVES ==== */

.two-column-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    min-height: 0;
    align-items: stretch;
}

.two-column-layout-left,
.two-column-layout-right {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: visible;
}

.list-buttons {
    display: grid;
    gap: 0.25rem;
    grid-template-columns: 1fr auto auto;
    align-items: center;
}

.list-buttons h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.list-buttons .btn {
    margin-bottom: 0.5rem;
}

.list-main {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--color-background-primary);
}

.list-scroll-container {
    flex: 1;
    overflow-y: auto;
    padding-right: 8px;
    position: relative;
    scroll-behavior: smooth;
}

.preview-card-list {
    display: grid;
    gap: 0.5rem;
    width: 100%;
}

.list-scroll-container::after {
    content: "";
    position: sticky;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    pointer-events: none;
    background: linear-gradient(to bottom, transparent 0%, var(--color-background-primary) 100%);
}

.table-wrapper {
    overflow: auto;
    border: 1px solid var(--color-text-secondary);
    border-radius: 4px;
    background: var(--color-background-primary);
}

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

.audit-table th,
.audit-table td {
    padding: 0.45rem 0.55rem;
    border-bottom: 1px solid var(--color-text-secondary);
    text-align: left;
    vertical-align: top;
}

.audit-table th {
    background: color-mix(in oklab, var(--color-background-secondary) 75%, var(--color-background-primary) 25%);
    color: var(--color-text-primary);
    position: sticky;
    top: 0;
}

.ui-field {
    display: grid;
    gap: 0.2rem;
}

.ui-actions {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.ui-list {
    display: grid;
    gap: 0.75rem;
}

.ui-title {
    margin: 0 0 0.75rem 0;
}

.ui-text-muted {
    color: var(--color-text-secondary);
}

.ui-divider-top-dashed {
    border-top: 1px dashed var(--color-text-secondary);
    padding-top: 0.75rem;
}

.ui-select-sm {
    min-width: 140px;
    max-width: 280px;
    font-size: 0.85rem;
    padding: 0.2rem 0.5rem;
}

.mobile-detail-nav {
    display: none;
}

/* ==== SCROLLABLE LIST ==== */

.scrollable {
    max-height: 400px;
    overflow-y: auto;
    position: relative;
    padding-right: 0.5rem;
}

/* fade effect */
.scrollable::after {
    content: "";
    position: sticky;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    pointer-events: none;
    background: linear-gradient(
            to bottom,
            rgba(0, 0, 0, 0),
            var(--color-background-primary)
    );
}

/* scrollbar styling */
.scrollable::-webkit-scrollbar {
    width: 8px;
}

.scrollable::-webkit-scrollbar-thumb {
    background-color: var(--color-text-secondary);
    border-radius: 4px;
}

.scrollable::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-highlight-secondary);
}

/* ==== TYPOGRAPHY & CONTAINERS ==== */

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-weight: 600;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 0.75rem;
    color: var(--color-text-primary);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
}

/* ==== BODY ==== */
body {
    background-color: var(--color-background-primary);
    color: var(--color-text-primary);
    margin: 0;
    padding: 0;
}

@media (max-width: 900px) {
    .ui-grid-2 {
        grid-template-columns: 1fr;
    }

    .two-column-layout {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .two-column-layout-left,
    .two-column-layout-right {
        overflow: visible;
    }

    .list-buttons {
        grid-template-columns: 1fr auto;
        gap: 0.5rem;
    }

    .list-buttons h4 {
        grid-column: 1 / -1;
        margin-bottom: 0;
    }

    .list-buttons .btn {
        margin-bottom: 0;
    }

    .list-main {
        overflow: visible;
    }

    .list-scroll-container {
        max-height: 40dvh;
        padding-right: 0;
    }

    .list-scroll-container::after {
        height: 24px;
    }

    .two-column-layout.mobile-master-detail {
        display: block;
        width: 100%;
        gap: 0;
    }

    .two-column-layout.mobile-master-detail .two-column-layout-left,
    .two-column-layout.mobile-master-detail .two-column-layout-right {
        max-width: 100%;
        min-height: 0;
    }

    .two-column-layout.mobile-master-detail:not(.mobile-detail-open) .two-column-layout-right {
        display: none;
    }

    .two-column-layout.mobile-master-detail.mobile-detail-open .two-column-layout-left {
        display: none;
    }

    .mobile-detail-nav {
        display: flex;
        align-items: center;
        margin-bottom: 0.75rem;
    }
}

@media (max-width: 560px) {
    .list-buttons {
        grid-template-columns: 1fr;
    }

    .list-buttons .btn {
        width: 100%;
    }

    .mobile-detail-nav .btn {
        width: auto;
    }
}