/* =====================================================================
   COMPONENTS - Navigation, surfaces, forms, buttons, tables, pagination
   ===================================================================== */

/* ====== Navigation ====== */
#nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-teal-dark);
    padding: var(--space-md) var(--space-2xl);
    box-shadow: var(--shadow-nav);
    flex-wrap: wrap;
}

.nav-logo img {
    height: 40px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: var(--space-2xl);
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-light);
    font-weight: 600;
    padding-bottom: 2px;
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-normal);
}

.nav-links a:hover {
    border-bottom-color: var(--color-text-light);
}

.logout-form {
    display: inline;
    margin: 0;
    padding: 0;
}

.nav-logout-btn {
    background: none;
    border: none;
    color: var(--color-text-light);
    font-weight: 600;
    font-size: inherit;
    font-family: inherit;
    padding: 0;
    padding-bottom: 2px;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: border-color var(--transition-normal);
}

.nav-logout-btn:hover {
    border-bottom-color: var(--color-text-light);
}

.lang-switcher {
    display: flex;
    align-items: center;
    margin-left: var(--space-sm);
    padding-left: var(--space-lg);
    border-left: 1px solid rgba(255, 255, 255, 0.3);
}

.lang-switcher form {
    margin: 0;
}

.lang-select {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: var(--color-text-light);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.lang-select:hover {
    border-color: var(--color-text-light);
}

.lang-select:focus {
    outline: none;
    border-color: var(--color-text-light);
}

.lang-select option {
    background: var(--color-teal-dark);
    color: var(--color-text-light);
}

@media (max-width: 768px) {
    #nav {
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }

    .nav-links {
        gap: var(--space-lg);
    }
}

/* ====== Surfaces (Cards/Panels) ====== */
.surface {
    background: var(--color-bg-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.surface-deep {
    background: var(--color-bg-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

/* ====== Form Controls ====== */
.form-control {
    width: 100%;
    height: 38px;
    padding: 0 var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    font-size: 13px;
    background-color: var(--color-bg-input);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control::placeholder {
    color: var(--color-text-placeholder);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-teal);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.25);
}

.form-control:disabled {
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    cursor: not-allowed;
}

.form-control.compact {
    height: 36px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
}

/* ====== Buttons ====== */
.btn-primary {
    height: 38px;
    padding: 0 18px;
    border-radius: var(--radius-full);
    border: none;
    background: linear-gradient(135deg, var(--color-teal), var(--color-teal-dark));
    color: #FFFFFF;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-btn);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn-hover);
    opacity: 0.95;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-btn);
}

.btn-primary:disabled {
    background: var(--color-gray-400);
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
    box-shadow: none;
}

.btn-primary.lg,
.btn-primary.lg:disabled {
    height: 44px;
    padding: 0 var(--space-2xl);
    border-radius: var(--radius-md);
    font-size: 14px;
}

/* ====== Tables ====== */
.table-wrapper {
    background: var(--color-bg-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md);
    max-width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 14px;
    color: var(--color-text-primary);
}

thead th {
    background: var(--color-gray-100);
    color: var(--color-text-secondary);
    text-align: left;
    font-weight: 600;
    padding: var(--space-md) var(--space-xl);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

thead th:first-child {
    border-top-left-radius: var(--radius-lg);
}

thead th:last-child {
    border-top-right-radius: var(--radius-lg);
}

tbody tr {
    transition: background-color var(--transition-fast);
}

tbody tr:hover {
    background-color: var(--color-teal-hover);
}

tbody td {
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
    white-space: nowrap;
}

tbody tr:last-child td:first-child {
    border-bottom-left-radius: var(--radius-lg);
}

tbody tr:last-child td:last-child {
    border-bottom-right-radius: var(--radius-lg);
}

tbody td:empty,
tbody td:has(> span:empty) {
    color: var(--color-text-placeholder);
}

tbody tr td[colspan] {
    text-align: center;
    color: var(--color-gray-600);
    font-style: italic;
    padding: var(--space-xl);
}

/* First row (Add form row) */
tbody tr:first-child {
    background: var(--color-bg-form-row);
}

tbody tr:first-child:hover {
    background: var(--color-bg-form-row-hover);
}

/* Data rows (non-form rows) */
tbody tr:not(:first-child) {
    background-color: var(--color-bg-input);
}

tbody tr:not(:first-child):hover {
    background-color: var(--color-gray-50);
}

tbody tr:not(:first-child) td {
    padding: var(--space-xl) var(--space-lg);
    color: var(--color-text-primary);
    font-size: 14px;
}

/* Numeric columns alignment */
tbody tr:not(:first-child) td:nth-child(1),
tbody tr:not(:first-child) td:nth-child(3),
tbody tr:not(:first-child) td:nth-child(6) {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* Comments column */
tbody tr:not(:first-child) td:nth-child(7) {
    color: var(--color-text-secondary);
    max-width: 280px;
    white-space: normal;
    line-height: 1.4;
}

/* Action column */
tbody tr:not(:first-child) td:last-child {
    text-align: center;
    color: var(--color-text-placeholder);
}



/* Fallback for table form elements */
table input,
table select {
    width: 100%;
}

@media (max-width: 900px) {
    table {
        font-size: 13px;
    }

    thead th,
    tbody td {
        padding: 10px var(--space-md);
    }
}

/* ====== Pagination ====== */
.pagination {
    display: flex;
    justify-content: center;
    margin: 36px 0 28px;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--color-bg-surface);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    color: var(--color-teal);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.page-btn:visited,
.pagination-controls .page-btn {
    color: var(--color-teal);
}

.page-btn * {
    color: inherit;
}

.page-btn:hover {
    background: var(--color-teal-light);
    border-color: var(--color-teal);
    box-shadow: 0 8px 18px rgba(20, 184, 166, 0.35);
    transform: translateY(-1px);
}

.page-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 10px rgba(20, 184, 166, 0.25);
}

.page-indicator {
    min-width: 72px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-gray-100);
    padding: 6px var(--space-md);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-inset);
}