/* =============================================================================
   DEXASIGN COMPONENT LIBRARY v2.0
   Professional Dashboard Components
   ============================================================================= */

/* =============================================================================
   BUTTONS - Single Source of Truth
   ============================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 40px;
    padding: 0 var(--space-4);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-user-select: none;
    user-select: none;
}

.btn:focus {
    outline: none;
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-100);
}

.btn:disabled,
.btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button with icon */
.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Primary Button */
.btn-primary {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

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

.btn-primary:active:not(:disabled) {
    background: var(--primary-light);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-tertiary);
    border-color: var(--border);
}

/* Danger Button */
.btn-danger {
    background: var(--danger);
    color: var(--text-inverse);
    border-color: var(--danger);
}

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

/* Danger Outline */
.btn-danger-outline {
    background: var(--bg-primary);
    color: var(--danger);
    border-color: var(--danger);
}

.btn-danger-outline:hover:not(:disabled) {
    background: var(--danger-light);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Link Button */
.btn-link {
    background: transparent;
    color: var(--primary);
    border-color: transparent;
    padding: 0;
    height: auto;
}

.btn-link:hover:not(:disabled) {
    text-decoration: underline;
}

/* Button Sizes */
.btn-sm {
    height: 32px;
    padding: 0 var(--space-3);
    font-size: var(--text-xs);
}

.btn-sm svg {
    width: 14px;
    height: 14px;
}

.btn-lg {
    height: 48px;
    padding: 0 var(--space-6);
    font-size: var(--text-base);
}

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

/* Full Width */
.btn-full {
    width: 100%;
}

/* Icon Only Button */
.btn-icon {
    width: 40px;
    padding: 0;
    justify-content: center;
}

.btn-icon.btn-sm {
    width: 32px;
}

.btn-icon.btn-lg {
    width: 48px;
}

/* =============================================================================
   CARDS
   ============================================================================= */

.card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-body {
    padding: var(--space-5);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

/* Simple card without header */
.card-simple {
    padding: var(--space-5);
}

/* Clickable card */
.card-clickable {
    cursor: pointer;
    transition: all var(--transition-base);
}

.card-clickable:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

/* Danger card variant */
.card-danger {
    border-color: var(--danger);
    background: var(--danger-light);
}

.card-danger .card-header {
    border-bottom-color: var(--danger);
}

.card-danger .card-title {
    color: var(--danger-dark);
}

/* Settings form layout */
.settings-form {
    display: flex;
    flex-direction: column;
}

/* =============================================================================
   STAT CARDS
   ============================================================================= */

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

.stat-label {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.stat-value {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

/* Smaller stat value variant for text/dates */
.stat-value-sm {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    font-weight: 500;
    margin-top: var(--space-2);
}

.stat-change.positive { color: var(--success); }
.stat-change.negative { color: var(--danger); }

/* =============================================================================
   BADGES
   ============================================================================= */

.badge {
    display: inline-flex;
    align-items: center;
    height: 24px;
    padding: 0 var(--space-2);
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.badge-primary {
    background: var(--primary);
    color: var(--text-inverse);
}

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

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

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

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

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

.badge-sm {
    height: 20px;
    padding: 0 var(--space-2);
    font-size: 10px;
}

/* =============================================================================
   FORMS
   ============================================================================= */

.form-group {
    margin-bottom: var(--space-5);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    height: 40px;
    padding: 0 var(--space-3);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-textarea {
    height: auto;
    padding: var(--space-3);
    resize: vertical;
    min-height: 100px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-tertiary);
}

.form-help {
    margin-top: var(--space-2);
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.form-error {
    margin-top: var(--space-2);
    font-size: var(--text-xs);
    color: var(--danger);
}

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

/* =============================================================================
   TABLES
   ============================================================================= */

.table-container {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
}

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

.table th {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.table td {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
}

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

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

/* Table responsive wrapper */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* =============================================================================
   MODALS
   ============================================================================= */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: rgba(0, 0, 0, 0.5);
}

.modal.active {
    display: flex;
}

.modal-content {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 480px;
    max-height: calc(100vh - var(--space-8));
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

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

.modal-sm .modal-content {
    max-width: 400px;
}

.modal-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5);
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    font-size: 20px;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.modal-content > form {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.modal-body {
    flex: 1;
    padding: var(--space-5);
    overflow-y: auto;
    min-height: 0;
}

.modal-footer {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

/* =============================================================================
   EMPTY STATES
   ============================================================================= */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12) var(--space-6);
    text-align: center;
}

.empty-state svg {
    width: 64px;
    height: 64px;
    color: var(--text-tertiary);
    margin-bottom: var(--space-4);
}

.empty-state h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.empty-state p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    max-width: 320px;
}

/* =============================================================================
   LOADING STATES
   ============================================================================= */

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

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

.loading-state p {
    margin-top: var(--space-3);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* =============================================================================
   ALERTS
   ============================================================================= */

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
}

.alert-info {
    background: var(--info-light);
    color: var(--info-dark);
}

.alert-success {
    background: var(--success-light);
    color: var(--success-dark);
}

.alert-warning {
    background: var(--warning-light);
    color: var(--warning-dark);
}

.alert-danger {
    background: var(--danger-light);
    color: var(--danger-dark);
}

/* =============================================================================
   CODE BLOCKS
   ============================================================================= */

.code-block {
    position: relative;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-4);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.code-title {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

.code-content {
    padding: var(--space-4);
    overflow-x: auto;
}

.code-content pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--text-primary);
}

/* Copy button */
.btn-copy {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    height: 28px;
    padding: 0 var(--space-2);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-copy.copied {
    background: var(--success);
    color: var(--text-inverse);
    border-color: var(--success);
}