/**
 * DH Suite — Shared UI Components
 *
 * Buttons, cards, forms, tables, modals, badges, and alerts.
 * Uses Rally's patterns as canonical reference (most complete with
 * focus-visible, color-mix, and consistent design token usage).
 *
 * Consolidates identical patterns from:
 *   - reach/static/css/main.css
 *   - respond/static/css/main.css
 *   - rally/static/css/main.css
 */

@layer components {

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:hover {
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}

/* --- Variants ----------------------------------------------------------- */

.btn-primary {
    color: white;
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.btn-secondary {
    color: var(--color-gray-700);
    background-color: white;
    border-color: var(--color-gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

.btn-danger {
    color: white;
    background-color: var(--color-danger);
    border-color: var(--color-danger);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--color-danger-dark);
    border-color: var(--color-danger-dark);
}

.btn-success {
    color: white;
    background-color: var(--color-success);
    border-color: var(--color-success);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-dark);
    border-color: var(--color-success-dark);
}

.btn-warning {
    color: var(--color-gray-900);
    background-color: var(--color-warning);
    border-color: var(--color-warning);
}

.btn-warning:hover:not(:disabled) {
    background-color: var(--color-warning-dark);
    border-color: var(--color-warning-dark);
}

.btn-ghost {
    color: var(--color-gray-700);
    background-color: transparent;
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-gray-100);
}

/* --- Sizes -------------------------------------------------------------- */

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
}

/* --- Modifiers ---------------------------------------------------------- */

.btn-block {
    width: 100%;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    color: inherit;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.btn-icon:hover:not(:disabled) {
    background-color: var(--color-gray-100);
}

.btn-icon:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}

.btn-icon:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-4);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-200);
}

.card-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.card-subtitle {
    margin: var(--spacing-1) 0 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    font-weight: 400;
}

.card-body {
    /* Content area — no default padding (card itself has padding) */
}

.card-footer {
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-gray-200);
}

/* --- Stat card ---------------------------------------------------------- */

.stat-card {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label,
.form-group label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea,
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-3);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus-visible,
.form-select:focus-visible,
.form-textarea:focus-visible,
.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible {
    border-color: var(--color-primary);
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

.form-input::placeholder,
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled,
.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
    background-color: var(--color-gray-100);
    cursor: not-allowed;
}

/* --- Validation states -------------------------------------------------- */

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid,
.form-group input.is-invalid,
.form-group select.is-invalid,
.form-group textarea.is-invalid,
.form-input.error,
.form-group .error {
    border-color: var(--color-danger);
}

.field-error,
.form-error {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: var(--spacing-1);
}

.form-hint {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-1);
}

/* --- Form row (inline fields) ------------------------------------------ */

.form-row {
    display: flex;
    gap: var(--spacing-4);
}

.form-row > .form-group {
    flex: 1;
}

/* --- Form actions (button row below form) ------------------------------- */

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-gray-200);
}

/* --- Legacy .input alias (used in Reach templates) --------------------- */

.input {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-900);
    background-color: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus-visible {
    border-color: var(--color-primary);
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

textarea.input,
textarea.form-input {
    width: 100%;
    min-height: 80px;
    resize: vertical;
    font-family: inherit;
    line-height: 1.5;
}

/* --- Checkbox / radio --------------------------------------------------- */

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.form-checkbox input[type="checkbox"],
.form-checkbox input[type="radio"] {
    width: auto;
    accent-color: var(--color-primary);
}

/* ==========================================================================
   Tables
   ========================================================================== */

/* --- Wrapper for horizontal scroll -------------------------------------- */

.table-wrapper {
    overflow-x: auto;
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

/* --- Data table --------------------------------------------------------- */

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

.data-table th,
.data-table td {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-200);
}

.data-table th {
    background-color: var(--color-gray-50);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    white-space: nowrap;
}

.data-table th.sortable {
    cursor: pointer;
    user-select: none;
}

.data-table th.sortable:hover {
    background-color: var(--color-gray-100);
}

.data-table th.sortable:focus-visible {
    outline: var(--focus-ring);
    outline-offset: calc(-1 * var(--focus-ring-offset, 2px));
}

.data-table tbody tr:hover {
    background-color: var(--color-gray-50);
}

.data-table tbody tr.clickable {
    cursor: pointer;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* --- Legacy .table class (Reach compatibility) -------------------------- */

.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-4);
}

.table thead th {
    background: var(--color-gray-50);
    color: var(--color-gray-600);
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.05em;
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    border-bottom: 2px solid var(--color-gray-200);
    white-space: nowrap;
}

.table tbody td {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: top;
    color: var(--color-gray-700);
}

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

.table tbody tr:hover {
    background: var(--color-gray-50);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* --- Compact density ---------------------------------------------------- */

/* Legacy .table-compact variant (Reach compatibility) */
.table-compact thead th {
    padding: var(--spacing-2) var(--spacing-3);
}

.table-compact tbody td {
    padding: var(--spacing-2) var(--spacing-3);
}

/* .data-table compact variant */
.compact-view .data-table th,
.compact-view .data-table td {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
}

.compact-view .data-table th {
    font-size: var(--font-size-xs);
}

.compact-view .badge {
    padding: 0.125rem 0.375rem;
    font-size: 0.6875rem;
}

.compact-view .btn-icon {
    width: 28px;
    height: 28px;
    padding: var(--spacing-1);
}

.compact-view .btn-icon svg {
    width: 14px;
    height: 14px;
}

/* --- Action buttons in table rows --------------------------------------- */

.action-btns {
    display: flex;
    gap: var(--spacing-1);
}

.compact-view .action-btns {
    gap: 2px;
}

/* --- Column visibility -------------------------------------------------- */

.col-hidden {
    display: none !important;
}

/* ==========================================================================
   Modals
   ========================================================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
}

.modal-lg {
    max-width: 640px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-200);
}

.modal-header h2,
.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--color-gray-500);
    cursor: pointer;
    padding: var(--spacing-2);
    line-height: 1;
    border-radius: var(--radius-md);
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--color-gray-700);
    background-color: var(--color-gray-100);
}

.modal-close:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}

.modal-body {
    flex: 1;
    padding: var(--spacing-4);
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-gray-200);
}

/* ==========================================================================
   Badges
   ========================================================================== */

.badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-sm);
    text-transform: capitalize;
}

/* --- Semantic variants -------------------------------------------------- */

.badge-success { background: var(--badge-success-bg); color: var(--badge-success-text); }
.badge-danger  { background: var(--badge-danger-bg);  color: var(--badge-danger-text); }
.badge-warning { background: var(--badge-warning-bg); color: var(--badge-warning-text); }
.badge-info    { background: var(--badge-info-bg);    color: var(--badge-info-text); }
.badge-primary { background: var(--badge-primary-bg); color: var(--badge-primary-text); }
.badge-secondary { background: var(--badge-secondary-bg); color: var(--badge-secondary-text); }

/* --- Status variants ---------------------------------------------------- */

.badge-pending    { background: var(--badge-pending-bg);     color: var(--badge-pending-text); }
.badge-assigned   { background: var(--badge-assigned-bg);    color: var(--badge-assigned-text); }
.badge-in-progress { background: var(--badge-in-progress-bg); color: var(--badge-in-progress-text); }
.badge-completed  { background: var(--badge-completed-bg);   color: var(--badge-completed-text); }
.badge-cancelled  { background: var(--badge-cancelled-bg);   color: var(--badge-cancelled-text); }
.badge-available  { background: var(--badge-available-bg);   color: var(--badge-available-text); }

/* Status classes (alternative naming convention used in templates) */
.status-pending    { background-color: var(--badge-pending-bg);     color: var(--badge-pending-text); }
.status-assigned   { background-color: var(--badge-assigned-bg);    color: var(--badge-assigned-text); }
.status-in-progress,
.status-in_progress { background-color: var(--badge-in-progress-bg); color: var(--badge-in-progress-text); }
.status-completed  { background-color: var(--badge-completed-bg);   color: var(--badge-completed-text); }
.status-cancelled  { background-color: var(--badge-cancelled-bg);   color: var(--badge-cancelled-text); }
.status-available  { background-color: var(--badge-available-bg);   color: var(--badge-available-text); }
.status-deployed   { background-color: var(--badge-deployed-bg);    color: var(--badge-deployed-text); }
.status-returning  { background-color: var(--badge-returning-bg);   color: var(--badge-returning-text); }
.status-checked-in { background-color: var(--badge-available-bg);   color: var(--badge-available-text); }
.status-not-in     { background-color: var(--badge-danger-bg);      color: var(--badge-danger-text); }
.status-success    { background-color: var(--badge-success-bg);     color: var(--badge-success-text); }

/* --- Priority variants -------------------------------------------------- */

.priority-critical { background-color: var(--badge-critical-bg); color: var(--badge-critical-text); }
.priority-high     { background-color: var(--badge-high-bg);     color: var(--badge-high-text); }
.priority-medium   { background-color: var(--badge-medium-bg);   color: var(--badge-medium-text); }
.priority-low      { background-color: var(--badge-low-bg);      color: var(--badge-low-text); }

/* --- Convenience aliases ------------------------------------------------ */

.badge-approved  { background: var(--badge-success-bg);   color: var(--badge-success-text); }
.badge-rejected  { background: var(--badge-danger-bg);    color: var(--badge-danger-text); }
.badge-suspended { background: var(--badge-secondary-bg); color: var(--badge-secondary-text); }

/* ==========================================================================
   Alerts
   ========================================================================== */

.alert {
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.alert-error,
.alert-danger {
    color: var(--badge-danger-text);
    background-color: var(--badge-danger-bg);
    border: 1px solid color-mix(in srgb, var(--color-danger) 30%, transparent);
}

.alert-success {
    color: var(--badge-success-text);
    background-color: var(--badge-success-bg);
    border: 1px solid color-mix(in srgb, var(--color-success) 30%, transparent);
}

.alert-warning {
    color: var(--badge-warning-text);
    background-color: var(--badge-warning-bg);
    border: 1px solid color-mix(in srgb, var(--color-warning) 30%, transparent);
}

.alert-info {
    color: var(--badge-info-text);
    background-color: var(--badge-info-bg);
    border: 1px solid color-mix(in srgb, var(--color-info) 30%, transparent);
}

/* Legacy aliases used in Respond templates */
.error-message {
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    color: var(--badge-danger-text);
    background-color: var(--badge-danger-bg);
    border: 1px solid color-mix(in srgb, var(--color-danger) 30%, transparent);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.success-message {
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    color: var(--badge-success-text);
    background-color: var(--badge-success-bg);
    border: 1px solid color-mix(in srgb, var(--color-success) 30%, transparent);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-4);
    color: var(--color-gray-500);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-4);
    color: var(--color-gray-300);
}

.empty-state p {
    margin: 0;
}

/* ==========================================================================
   User Menu + Avatar
   ========================================================================== */

/* --- Avatar -------------------------------------------------------------- */

.avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-xs);
}

/* --- User menu container ------------------------------------------------- */

.user-menu {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-2);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

.user-btn:hover {
    background-color: var(--color-gray-50);
}

.user-btn:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}

/* --- Dropdown ------------------------------------------------------------ */

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background-color: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2) 0;
    z-index: 150;
}

.dropdown-item {
    display: block;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--color-gray-700);
    text-decoration: none;
    font-size: var(--font-size-sm);
}

.dropdown-item:hover {
    background-color: var(--color-gray-50);
    text-decoration: none;
}

.dropdown-item:focus-visible {
    outline: var(--focus-ring);
    outline-offset: calc(-1 * var(--focus-ring-offset, 2px));
    background-color: var(--color-gray-50);
}

.user-dropdown hr {
    margin: var(--spacing-2) 0;
    border: none;
    border-top: 1px solid var(--color-gray-200);
}

/* ==========================================================================
   Notification Bell
   ========================================================================== */

.notification-bell {
    position: relative;
}

.notification-bell-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.notification-bell-btn:hover {
    background-color: var(--color-gray-100);
    color: var(--color-gray-800);
}

.notification-bell-btn:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}

.notification-bell-btn svg {
    width: 20px;
    height: 20px;
}

/* Unread count badge — positioned top-right of the bell icon */
.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 18px;
    height: 18px;
    padding: 0 var(--spacing-1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6875rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-full);
    background-color: var(--color-danger);
    color: white;
}

/* ==========================================================================
   Error Pages
   ========================================================================== */

.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-4);
    text-align: center;
}

.error-container {
    max-width: 480px;
}

.error-code {
    font-size: 6rem;
    font-weight: 700;
    color: var(--color-gray-200);
    line-height: 1;
    margin-bottom: var(--spacing-4);
}

.error-title {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-3);
}

.error-description {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-6);
}

.error-actions {
    display: flex;
    gap: var(--spacing-3);
    justify-content: center;
    flex-wrap: wrap;
}

} /* end @layer components */