/**
 * SALON BOOKING SYSTEM - UI COMPONENTS
 * Reusable component styles
 */

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: #756049;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

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

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

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

.btn-block {
    display: flex;
    width: 100%;
}

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

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

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

.form-label-required::after {
    content: '*';
    color: var(--error);
    margin-left: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background-color: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.1);
}

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

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

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

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

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

.form-input.is-valid,
.form-select.is-valid,
.form-textarea.is-valid {
    border-color: var(--success);
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
    margin-right: var(--spacing-sm);
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.form-check-label {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

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

.card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    background-color: var(--surface);
}

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

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
    background-color: var(--background);
}

.card-image {
    width: 100%;
    height: auto;
    display: block;
}

/* Card Variants */
.card-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: white;
}

.card-primary h2,
.card-primary h3,
.card-primary h4,
.card-primary p {
    color: white;
}

.card-primary .card-header {
    background-color: var(--primary-dark);
    color: white;
    border-bottom-color: var(--primary-dark);
}

.card-no-border {
    border: none;
}

.card-no-shadow {
    box-shadow: none;
}

/* ===================================================================
   BADGES & LABELS
   =================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

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

.badge-success {
    background-color: var(--success-light);
    color: #4A7C4A;
}

.badge-warning {
    background-color: var(--warning-light);
    color: #B8873F;
}

.badge-error {
    background-color: var(--error-light);
    color: #B85757;
}

.badge-info {
    background-color: var(--info-light);
    color: #4A73B8;
}

/* Appointment Status Badges */
.badge-status-pending {
    background-color: #FFF4E5;
    color: #B8873F;
}

.badge-status-confirmed {
    background-color: #E8F1FF;
    color: #4A73B8;
}

.badge-status-in-progress {
    background-color: #F0EBFF;
    color: #6A4FBC;
}

.badge-status-completed {
    background-color: #E8F5E8;
    color: #4A7C4A;
}

.badge-status-cancelled {
    background-color: #F5F5F5;
    color: #666666;
}

.badge-status-no-show {
    background-color: #FFE8E8;
    color: #B85757;
}

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

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.alert-success {
    background-color: var(--success-light);
    border-left-color: var(--success);
    color: #2C5C2C;
}

.alert-warning {
    background-color: var(--warning-light);
    border-left-color: var(--warning);
    color: #8B6520;
}

.alert-error {
    background-color: var(--error-light);
    border-left-color: var(--error);
    color: #8B3838;
}

.alert-info {
    background-color: var(--info-light);
    border-left-color: var(--info);
    color: #385E8B;
}

/* ===================================================================
   MODAL
   =================================================================== */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform var(--transition-base);
}

.modal-backdrop.active .modal {
    transform: scale(1);
}

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

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

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

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

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface);
}

.table thead {
    background-color: var(--background);
    border-bottom: 2px solid var(--border);
}

.table th {
    padding: var(--spacing-md);
    text-align: left;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

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

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

/* ===================================================================
   LOADING SPINNER
   =================================================================== */

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: var(--z-modal);
}

/* ===================================================================
   PAGINATION
   =================================================================== */

.pagination {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    justify-content: center;
}

.pagination-btn {
    min-width: 40px;
    height: 40px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border);
    background-color: var(--surface);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: var(--font-weight-medium);
}

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

.pagination-btn.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--text-on-primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.stat-card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.stat-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.stat-card-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.stat-card-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-xs);
}

.stat-card-footer {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.stat-trend {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

.stat-trend.positive {
    color: var(--success);
}

.stat-trend.negative {
    color: var(--error);
}