.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

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

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

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

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

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.82rem;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

.btn-upload {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    font-size: 0.88rem;
    font-weight: 600;
    color: white;
    background: var(--accent);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.btn-upload:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-login {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

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

.btn-logout,
.btn-category {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    font-size: 0.88rem;
    font-weight: 500;
    color: white;
    background: var(--accent);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.btn-logout:hover,
.btn-category:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-text {
    font-size: inherit;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9rem;
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    transition: var(--transition-fast);
}

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

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.form-actions .btn {
    flex: 1;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5rem;
    color: white;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-fast);
    cursor: pointer;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-delete {
    position: absolute;
    top: 20px;
    left: 20px;
    color: white;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-fast);
    cursor: pointer;
}

.modal-delete:hover {
    background: rgba(239, 68, 68, 0.8);
}

.modal-edit {
    position: absolute;
    top: 72px;
    left: 20px;
    color: white;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-fast);
    cursor: pointer;
}

.modal-edit:hover {
    background: rgba(59, 130, 246, 0.8);
}

.modal-content {
    max-width: 90vw;
    max-height: 90vh;
    text-align: center;
}

.modal-image {
    max-width: 100%;
    max-height: 75vh;
    border-radius: var(--radius-md);
    object-fit: contain;
}

.modal-info {
    margin-top: 20px;
    color: white;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.modal-tags {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

.modal-edit-form {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    padding: 28px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.modal-edit-form.active {
    transform: translateY(0);
}

.modal-panel {
    background: var(--bg-surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-panel-wide {
    max-width: 600px;
}

.modal-panel-title {
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 28px;
    letter-spacing: -0.02em;
}

.upload-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-sm);
}

.upload-tab {
    flex: 1;
    padding: 9px 16px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 4px;
    transition: var(--transition-fast);
    cursor: pointer;
}

.upload-tab.active {
    background: var(--bg-surface);
    color: var(--text-primary);
    box-shadow: var(--shadow-xs);
}

.upload-panel {
    margin-bottom: 20px;
}

.upload-dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 36px 20px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.upload-dropzone:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-dropzone.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-dropzone svg {
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.upload-dropzone p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.upload-dropzone span {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.file-preview {
    position: relative;
    margin-top: 12px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.file-preview img {
    width: 100%;
    max-height: 180px;
    object-fit: contain;
    background: var(--bg-secondary);
}

.btn-remove-file {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    transition: var(--transition-fast);
    cursor: pointer;
}

.btn-remove-file:hover {
    background: rgba(0, 0, 0, 0.7);
}

.add-category-form {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius-md);
    margin-bottom: 28px;
}

.add-category-form h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 14px;
}

.category-list h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 14px;
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
}

.category-item-info {
    flex: 1;
}

.category-item-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.category-item-slug {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.category-item-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.category-item-actions {
    display: flex;
    gap: 8px;
}

.btn-delete-category {
    padding: 6px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--danger);
    background: var(--danger-light);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    cursor: pointer;
}

.btn-delete-category:hover {
    background: var(--danger);
    color: white;
}

@media (max-width: 768px) {
    .modal-panel {
        padding: 28px 20px;
        margin: 12px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}