/* ========================================
   COMPONENT STYLES
   Reusable UI Components
   ======================================== */

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-dark:hover:not(:disabled) {
    background: var(--color-darker);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-dark);
    border-color: var(--color-gray-300);
}

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

.btn-sm {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

.btn-icon {
    padding: var(--space-md);
    aspect-ratio: 1;
}

/* === CARDS === */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-header {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--color-gray-200);
}

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

.card-footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-50);
}

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.card-overlay {
    position: relative;
    overflow: hidden;
}

.card-overlay::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: var(--gradient-overlay);
    pointer-events: none;
}

.card-overlay-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-xl);
    color: var(--color-white);
    z-index: 1;
}

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

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

.badge-success {
    background-color: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background-color: #FEF3C7;
    color: #92400E;
}

.badge-error {
    background-color: #FEE2E2;
    color: #991B1B;
}

.badge-dark {
    background-color: var(--color-gray-800);
    color: var(--color-white);
}

/* === FORMS === */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

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

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

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

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

.form-checkbox,
.form-radio {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.form-checkbox-group,
.form-radio-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* === MODALS === */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal-backdrop);
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.modal {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

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

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

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--color-gray-500);
    cursor: pointer;
    padding: var(--space-sm);
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-gray-900);
}

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

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-md);
    padding: var(--space-xl);
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-50);
}

/* === TABLES === */
.table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.table thead {
    background-color: var(--color-gray-50);
    border-bottom: 2px solid var(--color-gray-200);
}

.table th {
    padding: var(--space-lg) var(--space-md);
    text-align: left;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    padding: var(--space-lg) var(--space-md);
    border-bottom: 1px solid var(--color-gray-200);
    color: var(--color-gray-900);
}

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

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

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

/* === ALERTS === */
.alert {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    margin-bottom: var(--space-lg);
}

.alert-success {
    background-color: #D1FAE5;
    border-color: var(--color-success);
    color: #065F46;
}

.alert-warning {
    background-color: #FEF3C7;
    border-color: var(--color-warning);
    color: #92400E;
}

.alert-error {
    background-color: #FEE2E2;
    border-color: var(--color-error);
    color: #991B1B;
}

.alert-info {
    background-color: #DBEAFE;
    border-color: var(--color-info);
    color: #1E40AF;
}

/* === TOAST === */
.toast-container {
    position: fixed;
    top: var(--space-xl);
    right: var(--space-xl);
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 400px;
}

.toast {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--space-lg);
    display: flex;
    align-items: start;
    gap: var(--space-md);
    animation: slideInRight 0.3s ease-out;
}

.toast-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

.toast-content {
    flex: 1;
}

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

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--color-gray-900);
}

/* === PAGINATION === */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
}

.pagination-btn {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-gray-300);
    background-color: var(--color-white);
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

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

/* === LOADER === */
.loader {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

/* === DROPDOWN === */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-sm);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    color: var(--color-gray-700);
    background: none;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--color-gray-50);
}

.dropdown-item:first-child {
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
}

.dropdown-item:last-child {
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--color-gray-200);
    margin: var(--space-sm) 0;
}

/* === TABS === */
.tabs {
    border-bottom: 2px solid var(--color-gray-200);
    margin-bottom: var(--space-xl);
}

.tabs-list {
    display: flex;
    gap: var(--space-md);
    list-style: none;
}

.tab-button {
    padding: var(--space-md) var(--space-lg);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--color-gray-600);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: -2px;
}

.tab-button:hover {
    color: var(--color-gray-900);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* === AVATAR === */
.avatar {
    display: inline-block;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    background-color: var(--color-gray-200);
}

.avatar-sm {
    width: 32px;
    height: 32px;
}

.avatar-lg {
    width: 64px;
    height: 64px;
}

.avatar-xl {
    width: 96px;
    height: 96px;
}

/* === STATS CARD === */
.stats-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.stats-value {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    font-family: var(--font-heading);
    margin-bottom: var(--space-sm);
}

.stats-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}