/**
 * Dhanvi HRMS - Enterprise UI Component Library
 */

/* ==========================================================================
   1. Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1.1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    line-height: 1.25;
    white-space: nowrap;
    user-select: none;
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--brand-glow);
}

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

/* Primary Dhanvi Gold Button */
.btn-primary {
    background-color: var(--brand-primary);
    color: #FFFFFF;
    border-color: var(--brand-primary);
}

.btn-primary:hover {
    background-color: var(--brand-dark);
    border-color: var(--brand-dark);
    color: #FFFFFF;
    box-shadow: var(--shadow-sm);
}

.btn-primary:active {
    background-color: var(--brand-dark);
    transform: translateY(1px);
}

/* Secondary Button */
.btn-secondary {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

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

/* Outline Gold Button */
.btn-outline-gold {
    background-color: transparent;
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.btn-outline-gold:hover {
    background-color: var(--brand-soft);
    color: var(--brand-dark);
}

/* Semantic Buttons */
.btn-success {
    background-color: var(--success);
    border-color: var(--success);
    color: #FFFFFF;
}
.btn-success:hover {
    filter: brightness(0.92);
    color: #FFFFFF;
}

.btn-danger {
    background-color: var(--danger);
    border-color: var(--danger);
    color: #FFFFFF;
}
.btn-danger:hover {
    filter: brightness(0.92);
    color: #FFFFFF;
}

.btn-warning {
    background-color: var(--warning);
    border-color: var(--warning);
    color: #FFFFFF;
}

.btn-ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

/* Button Sizes */
.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    border-radius: var(--radius-xs);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
}

/* ==========================================================================
   2. Input Fields & Form Controls
   ========================================================================== */
.form-group {
    margin-bottom: 1.15rem;
}

.form-label {
    display: block;
    font-size: 0.84rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-hint {
    font-size: 0.76rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.form-control {
    width: 100%;
    padding: 0.58rem 0.85rem;
    font-size: 0.9rem;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-card);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px var(--brand-glow);
}

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

.form-control:disabled, .form-control[readonly] {
    background-color: var(--bg-secondary);
    cursor: not-allowed;
    opacity: 0.8;
}

.form-control.is-invalid {
    border-color: var(--danger);
}
.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.form-control.is-valid {
    border-color: var(--success);
}

.form-feedback-error {
    font-size: 0.78rem;
    color: var(--danger);
    margin-top: 0.25rem;
}

/* Input Groups */
.input-group {
    display: flex;
    position: relative;
}

.input-group .form-control {
    flex: 1;
}

.input-group-prepend, .input-group-append {
    display: flex;
    align-items: center;
    padding: 0 0.85rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.input-group-prepend {
    border-right: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.input-group-append {
    border-left: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.input-group .form-control:not(:first-child) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.input-group .form-control:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

/* Form Grid */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--text-primary);
    user-select: none;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    accent-color: var(--brand-primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* Switch Component */
.form-switch {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    cursor: pointer;
}

.switch-slider {
    position: relative;
    width: 38px;
    height: 20px;
    background-color: var(--border-color);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
}

.switch-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background-color: #FFFFFF;
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

input:checked + .switch-slider {
    background-color: var(--brand-primary);
}

input:checked + .switch-slider::before {
    transform: translateX(18px);
}

/* ==========================================================================
   3. Cards & Statistic KPI Cards
   ========================================================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-fast);
}

.card-header {
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-card);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Statistic KPI Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card-gold {
    border-top: 3px solid var(--brand-primary);
}

.stat-icon-wrapper {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-icon-wrapper.gold { background-color: var(--brand-soft); color: var(--brand-primary); }
.stat-icon-wrapper.success { background-color: var(--success-soft); color: var(--success); }
.stat-icon-wrapper.warning { background-color: var(--warning-soft); color: var(--warning); }
.stat-icon-wrapper.danger { background-color: var(--danger-soft); color: var(--danger); }
.stat-icon-wrapper.info { background-color: var(--info-soft); color: var(--info); }

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.15;
    margin: 0.25rem 0 0.15rem;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-trend {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.35rem;
}

.stat-trend.positive { color: var(--success); }
.stat-trend.negative { color: var(--danger); }
.stat-trend.neutral { color: var(--text-secondary); }

/* ==========================================================================
   4. Tables & Data Grids
   ========================================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
}

.table th {
    background-color: var(--bg-secondary);
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

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

.table tbody tr:hover {
    background-color: var(--bg-secondary);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--bg-secondary);
}

/* Table Selection Checkbox Column */
.table-checkbox-col {
    width: 40px;
    text-align: center;
    padding-left: 0.75rem;
    padding-right: 0;
}

/* ==========================================================================
   5. Badges & Status Indicators
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.6rem;
    font-size: 0.74rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: capitalize;
    line-height: 1.2;
    white-space: nowrap;
}

.badge-gold {
    background-color: var(--brand-soft);
    color: var(--brand-primary);
    border: 1px solid rgba(181, 128, 0, 0.3);
}

.badge-success {
    background-color: var(--success-soft);
    color: var(--success);
}

.badge-warning {
    background-color: var(--warning-soft);
    color: var(--warning);
}

.badge-danger {
    background-color: var(--danger-soft);
    color: var(--danger);
}

.badge-info {
    background-color: var(--info-soft);
    color: var(--info);
}

.badge-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

/* Status Indicator Dot */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.status-dot.active { background-color: var(--success); box-shadow: 0 0 0 2px var(--success-soft); }
.status-dot.pending { background-color: var(--warning); }
.status-dot.inactive { background-color: var(--danger); }
.status-dot.gold { background-color: var(--brand-primary); }

/* ==========================================================================
   6. Alerts & Callouts
   ========================================================================== */
.alert {
    padding: 0.85rem 1.15rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.88rem;
    border: 1px solid transparent;
}

.alert-gold {
    background-color: var(--brand-soft);
    color: var(--brand-dark);
    border-color: rgba(181, 128, 0, 0.3);
}

.alert-success {
    background-color: var(--success-soft);
    color: #065F46;
    border-color: #A7F3D0;
}

.alert-danger {
    background-color: var(--danger-soft);
    color: #991B1B;
    border-color: #FECACA;
}

.alert-warning {
    background-color: var(--warning-soft);
    color: #92400E;
    border-color: #FDE68A;
}

.alert-info {
    background-color: var(--info-soft);
    color: #075985;
    border-color: #BAE6FD;
}

/* ==========================================================================
   7. Tabs & Navigation Components
   ========================================================================== */
.nav-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.25rem;
    list-style: none;
}

.nav-tab-item {
    padding: 0.65rem 1rem;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav-tab-item:hover {
    color: var(--text-primary);
}

.nav-tab-item.active {
    color: var(--brand-primary);
    border-bottom-color: var(--brand-primary);
    font-weight: 600;
}

/* Pill Tabs */
.nav-pills {
    display: inline-flex;
    background-color: var(--bg-secondary);
    padding: 3px;
    border-radius: var(--radius-md);
    gap: 2px;
}

.nav-pill-item {
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: none;
    background: transparent;
    transition: all var(--transition-fast);
}

.nav-pill-item.active {
    background-color: var(--bg-card);
    color: var(--brand-primary);
    font-weight: 600;
    box-shadow: var(--shadow-xs);
}

/* ==========================================================================
   8. Pagination & Breadcrumbs
   ========================================================================== */
.pagination {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    list-style: none;
}

.page-item .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 0.5rem;
    font-size: 0.84rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.page-item .page-link:hover {
    background-color: var(--bg-secondary);
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.page-item.active .page-link {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
    color: #FFFFFF;
    font-weight: 600;
}

.page-item.disabled .page-link {
    opacity: 0.5;
    pointer-events: none;
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.breadcrumb-separator {
    color: var(--text-muted);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

/* ==========================================================================
   9. Modals & Slide-Over Drawers
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(3px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    width: 92%;
    max-width: 580px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.35rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    background-color: var(--bg-secondary);
}

/* Slide-Over Drawer */
.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1000;
    display: none;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.drawer-overlay.active {
    display: block;
    opacity: 1;
}

.drawer-container {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    box-shadow: var(--shadow-xl);
    border-left: 1px solid var(--border-color);
    z-index: 1001;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.drawer-overlay.active .drawer-container {
    transform: translateX(0);
}

.drawer-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.drawer-body {
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
}

.drawer-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* ==========================================================================
   10. Empty, Loading & Skeleton States
   ========================================================================== */
.empty-state {
    padding: 3.5rem 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.empty-state-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.empty-state-description {
    font-size: 0.88rem;
    color: var(--text-secondary);
    max-width: 380px;
    margin: 0 auto 1.25rem;
}

/* Skeletons */
.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--border-color) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-xs);
}

.skeleton-text {
    height: 14px;
    margin-bottom: 8px;
    width: 100%;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Spinners */
.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid var(--border-color);
    border-top-color: var(--brand-primary);
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   11. Notification Center Dropdown
   ========================================================================== */
.notification-bell-btn {
    position: relative;
    background: transparent;
    border: 1px solid var(--border-color);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.notification-bell-btn:hover {
    background-color: var(--bg-secondary);
    color: var(--brand-primary);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--brand-primary);
    color: #FFFFFF;
    font-size: 0.65rem;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    border: 2px solid var(--bg-surface-elevated);
}

.notification-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 340px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: 120;
    display: none;
}

.notification-dropdown.show {
    display: block;
}

.notification-dropdown-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.notification-item {
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    font-size: 0.85rem;
    transition: background-color var(--transition-fast);
    text-decoration: none;
    color: var(--text-primary);
}

.notification-item:hover {
    background-color: var(--bg-secondary);
}

.notification-item.unread {
    background-color: var(--brand-soft);
}