.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid var(--color-white);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-secondary:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

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

.btn-white:hover {
    background: var(--color-light);
    color: var(--color-accent-hover);
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

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

.card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.card-image {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

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

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

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: 0;
}

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

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(221, 51, 51, 0.1);
}

.form-control::placeholder {
    color: #999;
}

.form-control-lg {
    padding: 16px 20px;
    font-size: 1.1rem;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-label.required::after {
    content: '*';
    color: var(--color-accent);
    margin-left: 4px;
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.form-error {
    color: var(--color-accent);
    font-size: 0.85rem;
    margin-top: 4px;
}

.form-success {
    color: #28a745;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(40, 167, 69, 0.1);
    border-radius: var(--border-radius);
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 50px;
}

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

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

.badge-success {
    background: #28a745;
    color: var(--color-white);
}

.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid #28a745;
    color: #28a745;
}

.alert-error {
    background: rgba(221, 51, 51, 0.1);
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
}

.alert-info {
    background: rgba(0, 123, 255, 0.1);
    border: 1px solid #007bff;
    color: #007bff;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-white);
    animation: spin 1s ease-in-out infinite;
}

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

.accordion {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.accordion-item {
    border-bottom: 1px solid var(--color-border);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    padding: var(--spacing-md);
    background: var(--color-light);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.accordion-header::after {
    content: '+';
    font-size: 1.2rem;
    transition: transform var(--transition-fast);
}

.accordion-item.active .accordion-header::after {
    transform: rotate(45deg);
}

.accordion-content {
    padding: 0 var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.accordion-item.active .accordion-content {
    padding: var(--spacing-md);
    max-height: 500px;
}

.tabs {
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.tabs-nav {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
}

.tabs-nav li {
    margin-bottom: -1px;
}

.tabs-nav a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-light);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.tabs-nav a:hover {
    color: var(--color-text);
}

.tabs-nav a.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.tabs-content {
    display: none;
}

.tabs-content.active {
    display: block;
}

.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-title {
    font-size: 1.25rem;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-light);
}

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

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

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

.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

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

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
}

.dropdown-menu a:hover {
    background: var(--color-light);
    color: var(--color-accent);
}

.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 12px;
    background: #333;
    color: var(--color-white);
    font-size: 0.8rem;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

.progress {
    height: 8px;
    background: var(--color-light);
    border-radius: 50px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--color-accent);
    border-radius: 50px;
    transition: width var(--transition-normal);
}

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

.divider-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.divider-text::before,
.divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-lg) 0;
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.pagination span {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 12px 24px;
    }
    
    .btn-lg {
        padding: 16px 32px;
    }
}