/* ========== 1. Button ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 36px;
    padding: 0 14px;
    font-size: var(--fs-base);
    font-weight: var(--fw-medium);
    line-height: 1;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-brand-500);
    color: var(--text-on-brand);
    border-color: var(--color-brand-500);
}
.btn-primary:hover {
    background: var(--color-brand-600);
    border-color: var(--color-brand-600);
}

.btn-secondary {
    background: #ffffff;
    color: var(--text-primary);
    border-color: var(--color-gray-300);
}
.btn-secondary:hover {
    background: var(--color-gray-50);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
}
.btn-ghost:hover {
    background: var(--color-gray-100);
}

.btn-danger {
    background: var(--color-danger);
    color: #ffffff;
    border-color: var(--color-danger);
}
.btn-danger:hover {
    background: #b91c1c;
    border-color: #b91c1c;
}

.btn-sm {
    height: 28px;
    padding: 0 10px;
    font-size: var(--fs-sm);
}

.btn-lg {
    height: 44px;
    padding: 0 20px;
    font-size: var(--fs-md);
}

.btn-icon {
    width: 36px;
    padding: 0;
}
.btn-sm.btn-icon {
    width: 28px;
}
.btn-lg.btn-icon {
    width: 44px;
}

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

/* ========== 2. Form Input ========== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--text-secondary);
}

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

.form-input {
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--fs-base);
    color: var(--text-primary);
    background: #ffffff;
    transition: border-color var(--transition-fast);
    width: 100%;
}

.form-input:focus {
    border-color: var(--color-brand-500);
    outline: 3px solid var(--color-brand-100);
    outline-offset: -1px;
}

.form-input:disabled {
    background: var(--color-gray-50);
    cursor: not-allowed;
}

.form-input.is-invalid {
    border-color: var(--color-danger);
}

.form-textarea {
    min-height: 80px;
    padding: 10px 12px;
    resize: vertical;
}

.form-select {
    height: 36px;
    padding: 0 32px 0 12px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--fs-base);
    color: var(--text-primary);
    background: #ffffff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat right 10px center;
    appearance: none;
    cursor: pointer;
    width: 100%;
    transition: border-color var(--transition-fast);
}

.form-select:focus {
    border-color: var(--color-brand-500);
    outline: 3px solid var(--color-brand-100);
    outline-offset: -1px;
}

.form-hint {
    font-size: var(--fs-xs);
    color: var(--text-tertiary);
}

.form-error {
    font-size: var(--fs-xs);
    color: var(--color-danger);
}

.input-group {
    display: flex;
    gap: 0;
}
.input-group .form-input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    margin-left: -1px;
}

/* ========== 3. Checkbox / Radio ========== */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--fs-base);
}

.form-check-input {
    width: 18px;
    height: 18px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-xs);
    cursor: pointer;
    accent-color: var(--color-brand-500);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

/* ========== 4. Card ========== */
.card {
    background: #ffffff;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-100);
}

.card-title {
    font-size: 15px;
    font-weight: var(--fw-semibold);
}

.card-description {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
}

.card-body {
    padding-top: var(--space-4);
}

.card-footer {
    border-top: 1px solid var(--color-gray-100);
    padding-top: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
}

/* ========== 5. Data Table ========== */
.data-table {
    width: 100%;
    font-size: var(--fs-base);
}

.data-table th {
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
    padding: 10px 12px;
    text-align: left;
    font-weight: var(--fw-semibold);
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-gray-100);
}

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

.data-table .td-number {
    text-align: right;
    font-family: var(--font-mono);
}

.data-table .td-actions {
    text-align: right;
    white-space: nowrap;
}

.table-wrapper {
    overflow-x: auto;
}

/* ========== 6. Badge ========== */
.badge {
    display: inline-flex;
    align-items: center;
    height: 20px;
    padding: 0 8px;
    border-radius: var(--radius-sm);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    white-space: nowrap;
    line-height: 1;
}

.badge-neutral {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.badge-brand {
    background: var(--color-brand-100);
    color: var(--color-brand-700);
}

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

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

.badge-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.badge-info {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.badge-outline {
    background: transparent;
    border: 1px solid currentColor;
}

/* ========== 7. Risk Grade Badge ========== */
.risk-grade {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    font-weight: var(--fw-bold);
    font-size: var(--fs-base);
}

.risk-grade-high {
    background: var(--color-risk-high-bg);
    color: var(--color-risk-high);
    border: 1px solid var(--color-risk-high);
}

.risk-grade-mid {
    background: var(--color-risk-mid-bg);
    color: var(--color-risk-mid);
    border: 1px solid var(--color-risk-mid);
}

.risk-grade-low {
    background: var(--color-risk-low-bg);
    color: var(--color-risk-low);
    border: 1px solid var(--color-risk-low);
}

/* ========== 8. Status Dot ========== */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot-success { background: var(--color-success); }
.status-dot-warning { background: var(--color-warning); }
.status-dot-danger { background: var(--color-danger); }
.status-dot-neutral { background: var(--color-gray-400); }

/* ========== 9. Alert ========== */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border-left: 3px solid;
    font-size: var(--fs-base);
}

.alert-info {
    background: var(--color-info-bg);
    border-left-color: var(--color-info);
    color: var(--color-info);
}

.alert-success {
    background: var(--color-success-bg);
    border-left-color: var(--color-success);
    color: var(--color-success);
}

.alert-warning {
    background: var(--color-warning-bg);
    border-left-color: var(--color-warning);
    color: var(--color-warning);
}

.alert-danger {
    background: var(--color-danger-bg);
    border-left-color: var(--color-danger);
    color: var(--color-danger);
}

.alert-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

/* ========== 10. Modal ========== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal {
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 480px;
    width: calc(100% - 32px);
    padding: var(--space-6);
    position: relative;
}

.modal-lg {
    max-width: 720px;
}

.modal-header {
    margin-bottom: var(--space-4);
}

.modal-body {
    margin-bottom: var(--space-5);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    cursor: pointer;
    border: none;
    background: none;
}
.modal-close:hover {
    background: var(--color-gray-100);
    color: var(--text-primary);
}

/* ========== 11. Sidebar ========== */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-brand-900);
    color: var(--color-gray-100);
    padding: var(--space-5) 0;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
}

.sidebar-logo {
    padding: 0 var(--space-5) var(--space-5);
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
}

.sidebar-group {
    padding: var(--space-4) 0;
}

.sidebar-group-label {
    padding: 0 var(--space-5) var(--space-2);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-400);
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px var(--space-5);
    color: var(--color-gray-300);
    font-size: var(--fs-base);
    cursor: pointer;
    transition: background var(--transition-fast);
    border-left: 2px solid transparent;
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

.sidebar-item.active {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    border-left-color: var(--color-accent-500);
}

.sidebar-item .iconify {
    width: 18px;
    height: 18px;
}

.sidebar-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========== 12. Topbar ========== */
.topbar {
    height: var(--header-height);
    background: #ffffff;
    border-bottom: 1px solid var(--color-gray-200);
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.topbar-left {
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

.topbar-breadcrumb {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
}

.topbar-right {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.topbar-user {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 6px 10px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.topbar-user:hover {
    background: var(--color-gray-50);
}

.topbar-user-name {
    font-size: var(--fs-base);
    font-weight: var(--fw-medium);
}

.topbar-user-role {
    font-size: var(--fs-xs);
    color: var(--text-secondary);
}

/* ========== 13. Page Header ========== */
/* (base.css에 정의됨, 추가 스타일) */

/* ========== 14. Empty State ========== */
.empty-state {
    padding: var(--space-12) var(--space-6);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--fs-base);
}

.empty-state-icon {
    width: 40px;
    height: 40px;
    color: var(--color-gray-300);
    margin: 0 auto var(--space-3);
}

.empty-state-title {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
    font-weight: var(--fw-semibold);
}

/* ========== 15. Pagination ========== */
.pagination {
    display: flex;
    gap: var(--space-1);
    justify-content: center;
    padding: var(--space-4) 0;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: #ffffff;
    font-size: var(--fs-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.page-btn:hover {
    background: var(--color-gray-50);
}

.page-btn.active {
    background: var(--color-brand-500);
    color: #ffffff;
    border-color: var(--color-brand-500);
}