/**
 * Components CSS - Кнопки, Карточки, Формы, и др.
 */

/* ============================================
   КНОПКИ
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
}

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

/* Button Variants */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--text-lg);
}

.btn-block {
    width: 100%;
}

/* ============================================
   КАРТОЧКИ
   ============================================ */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

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

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

.card-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-light);
}

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

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

.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
}

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

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

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--color-dark);
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-control.is-invalid {
    border-color: var(--color-error);
}

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

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

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

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

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.form-check-input {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
    user-select: none;
}

/* Select */
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* ============================================
   BADGE & PILLS
   ============================================ */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    border-radius: var(--radius-full);
}

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

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

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

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

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

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

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

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

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

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.modal.is-active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    animation: fadeIn var(--transition-base);
}

.modal-content {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    max-width: 600px;
    width: 100%;
    z-index: var(--z-modal);
    animation: slideUp var(--transition-base);
}

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

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

.modal-close {
    background: none;
    border: none;
    font-size: var(--text-2xl);
    cursor: pointer;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-xl);
}

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

/* ============================================
   LOADING SPINNER
   ============================================ */
.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(59, 130, 246, 0.1);
    border-left-color: var(--color-primary-light);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress {
    height: 8px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* ============================================
   TABS
   ============================================ */
.tabs {
    display: flex;
    gap: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
}

.tab {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-text-light);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
}

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

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

.tab-content {
    display: none;
}

.tab-content.is-active {
    display: block;
    animation: fadeIn var(--transition-base);
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    font-size: var(--text-sm);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.breadcrumb-item a {
    color: var(--color-primary);
}

.breadcrumb-item.is-active {
    color: var(--color-text-light);
}

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

/* ============================================
   TOOLTIPS
   ============================================ */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip-text {
    visibility: hidden;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-dark);
    color: var(--color-white);
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
    white-space: nowrap;
    z-index: var(--z-tooltip);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.tooltip-text::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--color-dark);
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

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

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    margin-top: var(--spacing-sm);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    overflow: hidden;
}

.dropdown.is-active .dropdown-menu {
    display: block;
    animation: slideDown var(--transition-base);
}

.dropdown-item {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-dark);
    text-decoration: none;
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-bg);
    color: var(--color-primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-sm) 0;
}