/**
 * UI Components
 * 재사용 가능한 UI 컴포넌트 스타일
 */

/* ==================== Buttons ==================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0 var(--space-4);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    height: var(--el-height-md);
    min-height: var(--el-height-md);
    white-space: nowrap;
    box-sizing: border-box;
    vertical-align: middle;
    user-select: none;
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

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

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

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

/* Button Variants */
.btn-primary {
    background-color: var(--button-primary-bg);
    color: var(--button-primary-text);
    box-shadow: inset 0 -1px 0 rgba(0,0,0,0.12), 0 1px 3px rgba(0,0,0,0.08);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--button-primary-hover);
    box-shadow: inset 0 -1px 0 rgba(0,0,0,0.1), 0 4px 6px -1px rgba(0,0,0,0.1);
}

.btn-primary:active:not(:disabled) {
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.15);
}

.btn-secondary {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border-color);
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-secondary);
    border-color: var(--border-hover, var(--border-color));
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.btn-success {
    background-color: var(--state-success);
    color: var(--text-inverse);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-hover, #047857);
    box-shadow: 0 4px 6px -1px rgba(5, 150, 105, 0.2);
}

.btn-danger {
    background-color: var(--state-error);
    color: var(--text-inverse);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--color-error-hover, #B91C1C);
    box-shadow: 0 4px 6px -1px rgba(220, 38, 38, 0.2);
}

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

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

/* Button Sizes */
.btn-sm {
    padding: 0 8px;
    font-size: var(--el-font-sm);
    height: var(--el-height-sm);
    min-height: var(--el-height-sm);
}

.btn-lg {
    padding: 0 var(--space-4);
    font-size: var(--el-font-lg);
    height: var(--el-height-lg);
    min-height: var(--el-height-lg);
}

/* Action Button (Google-style pill: 편지쓰기, 일정 만들기, + 새 파일 등) */
.btn-action {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px 14px 16px;
    height: auto;
    min-height: 48px;
    border: none;
    border-radius: var(--radius-xl);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    transition: box-shadow var(--transition-hover), background-color var(--transition-hover);
}

.btn-action:hover:not(:disabled) {
    box-shadow: 0 1px 3px 0 rgba(60,64,67,.3), 0 4px 8px 3px rgba(60,64,67,.15);
}

.btn-action .btn-action-icon {
    font-size: 22px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.btn-action .btn-action-label {
    white-space: nowrap;
}

/* 사이드바 접힘 시 아이콘만 표시 */
.collapsed .btn-action {
    width: 48px;
    height: 48px;
    padding: 0;
    justify-content: center;
    border-radius: var(--radius-xl);
    margin: 0 auto 8px;
}

.collapsed .btn-action .btn-action-label {
    display: none;
}

/* Icon Button */
.btn-icon {
    width: var(--el-height-md);
    height: var(--el-height-md);
    padding: 0;
    border-radius: var(--radius-md);
    border: none;
    background-color: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: var(--el-font-md);
}

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

/* Button Width Modifiers */
.btn-full {
    width: 100%;
}

/* ==================== Cards ==================== */

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    overflow: hidden;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    border-color: var(--border-hover, var(--card-border));
}

.card-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0;
}

.card-body {
    padding: var(--space-5);
}

.card-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
}

/* Card Variants — Visual Hierarchy */
.card-elevated {
    box-shadow: 0 1px 3px 0 rgba(0,0,0,0.07), 0 1px 2px -1px rgba(0,0,0,0.07);
}

.card-elevated:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
}

.card-hero {
    box-shadow: 0 1px 3px 0 rgba(0,0,0,0.07), 0 1px 2px -1px rgba(0,0,0,0.07);
    border-top: 4px solid var(--color-primary);
}

.card-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
}

/* ==================== Forms ==================== */

.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-control {
    display: block;
    width: 100%;
    padding: 0 12px;
    font-size: 14px;
    line-height: normal;
    height: var(--el-height-md);
    color: var(--text-primary);
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    transition: all 200ms ease;
    box-sizing: border-box;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.form-control:hover {
    border-color: var(--border-hover, var(--input-border));
}

.form-control:focus {
    outline: none;
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

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

.form-help {
    display: block;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-1);
}

.form-error {
    display: block;
    font-size: var(--text-sm);
    color: var(--state-error);
    margin-top: var(--space-1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
    height: auto;
    padding: var(--space-2);
    line-height: var(--leading-normal);
}

/* Select & Input (표준 크기) */
.form-select, .form-input {
    height: var(--el-height-md);
    font-size: var(--el-font-md);
    padding: 4px 8px;
    border: 1px solid var(--input-border, var(--border-color));
    border-radius: var(--radius-md);
    background-color: var(--input-bg, var(--bg-primary));
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
    box-sizing: border-box;
    line-height: normal;
    vertical-align: middle;
}
.form-select:focus, .form-input:focus {
    outline: none;
    border-color: var(--input-focus-border, #3B82F6);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

/* 소형 변형 (툴바 내부 등) */
.form-select-sm, .form-input-sm {
    height: var(--el-height-sm);
    font-size: var(--el-font-sm);
    padding: 2px 6px;
}

.form-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

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

/* ==================== Table ==================== */

.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    border-spacing: 0;
}

.data-table thead {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    padding: 10px 14px;
    font-size: 13px;
    text-align: left;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
    border-bottom: 1px solid var(--border-color);
    line-height: 1.4;
    vertical-align: middle;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    position: relative;
}

.data-table td {
    padding: 10px 14px;
    font-size: 13px;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    line-height: 1.4;
    vertical-align: middle;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 300px;
}

/* Truncation 예외: actions overlay, empty state */
.data-table td.td-actions-overlay,
.data-table td.empty-state,
.data-table td[colspan] {
    overflow: visible;
    white-space: normal;
    text-overflow: clip;
    max-width: none;
}

/* ---- Column Resize Handle ---- */
.data-table th .th-resize-handle {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    cursor: col-resize;
    background: transparent;
    z-index: 3;
    transition: background var(--transition-fast, 0.15s);
}
.data-table th .th-resize-handle:hover,
.data-table th .th-resize-handle.resizing {
    background: var(--color-primary);
}

/* ---- Sort Indicator ---- */
.data-table th .sort-indicator {
    font-size: 10px;
    margin-left: 2px;
    opacity: 0.7;
    color: var(--text-tertiary);
}
.data-table th[data-sort-dir] .sort-indicator {
    opacity: 1;
    color: var(--color-primary);
}
.data-table th[data-sortable]:not([data-no-sort]) {
    cursor: pointer;
    user-select: none;
}

.data-table .badge {
    padding: 0px 4px;
    font-size: 11px;
    line-height: 15px;
    vertical-align: middle;
}

.data-table .btn-sm {
    padding: 0px 4px;
    font-size: 12px;
    min-height: auto;
    line-height: 18px;
    vertical-align: middle;
}

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

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

/* data-table-compact: 기본과 동일 (하위 호환용 alias) */

/* Comfortable Table Variant - 넉넉한 여백이 필요한 경우 */
.data-table-comfortable th {
    padding: 4px var(--space-3);
    font-size: 14px;
}
.data-table-comfortable td {
    padding: 3px var(--space-3);
    font-size: 16px;
}
.data-table-comfortable .badge {
    padding: 1px 0.5rem;
    font-size: 13px;
}
.data-table-comfortable .btn-sm {
    padding: 2px 8px;
    font-size: 13px;
    min-height: 28px;
}

/* ---- Responsive Table (Mobile) ---- */
@media (max-width: 640px) {
    .table-container {
        margin: 0 calc(-1 * var(--space-3, 12px));
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .data-table th,
    .data-table td {
        padding: 4px 6px;
        font-size: 12px;
    }

    /* Sticky first column on mobile */
    .data-table.sticky-col th:first-child,
    .data-table.sticky-col td:first-child {
        position: sticky;
        left: 0;
        z-index: 2;
        background: var(--card-bg);
        border-right: 2px solid var(--border-color);
    }

    .data-table.sticky-col thead th:first-child {
        background: var(--bg-secondary);
        z-index: 3;
    }

    /* Card view toggle */
    .data-table.card-view thead {
        display: none;
    }

    .data-table.card-view tbody tr {
        display: block;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md, 8px);
        margin-bottom: var(--space-2, 8px);
        padding: var(--space-2, 8px);
        background: var(--card-bg);
    }

    .data-table.card-view tbody tr:hover {
        background: var(--bg-secondary);
    }

    .data-table.card-view td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 4px 0;
        border-bottom: 1px solid var(--border-color);
        white-space: normal;
        overflow: visible;
        text-overflow: unset;
    }

    .data-table.card-view td:last-child {
        border-bottom: none;
    }

    .data-table.card-view td::before {
        content: attr(data-label);
        font-weight: 600;
        font-size: 11px;
        color: var(--text-tertiary);
        flex-shrink: 0;
        margin-right: var(--space-2, 8px);
    }
}

/* ==================== Badge ==================== */

.badge {
    display: inline-flex;
    align-items: center;
    height: 22px;
    padding: 0 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: var(--radius-full);
    line-height: 1;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

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

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

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

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

/* ==================== Modal ==================== */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.modal.is-active {
    display: flex;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: var(--bg-overlay);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-container {
    position: relative;
    background-color: var(--card-bg);
    color: var(--text-primary);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.04);
    max-width: 520px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Entrance animations — scoped to visible state only */
.modal.is-active .modal-overlay {
    animation: modalOverlayIn 180ms ease-out both;
}
.modal.is-active .modal-container {
    animation: modalContentIn 200ms cubic-bezier(0.2, 0, 0, 1) both;
}

/* ==================== Standard Modal Animations ==================== */

@keyframes modalOverlayIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes modalContentIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(8px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes modalContentOut {
    from {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
    to {
        opacity: 0;
        transform: scale(0.95) translateY(8px);
    }
}

@keyframes modalOverlayOut {
    from { opacity: 1; }
    to   { opacity: 0; }
}

/* Exit animation: add .modal-closing to trigger smooth close */
.modal-closing .modal-container {
    animation: modalContentOut 150ms cubic-bezier(0.4, 0, 1, 1) both !important;
}
.modal-closing,
.page-modal.modal-closing {
    animation: modalOverlayOut 150ms ease-in both !important;
}

.modal-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-5);
    overflow-y: auto;
}

.modal-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    border-bottom-left-radius: var(--radius-xl);
    border-bottom-right-radius: var(--radius-xl);
}

/* ==================== Modal Mobile (전체화면) ==================== */

@media (max-width: 767px) {
    .modal {
        padding: 0;
    }

    .modal-container {
        max-width: 100%;
        width: 100%;
        height: 100%;
        max-height: 100%;
        border-radius: 0;
        /* iOS 슬라이드 업 애니메이션 */
        animation: slideUp 0.3s ease-out;
    }

    @keyframes slideUp {
        from {
            transform: translateY(100%);
            opacity: 0;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }

    .modal-header {
        padding: var(--space-4);
        /* Safe Area 대응 */
        padding-top: calc(var(--space-4) + constant(safe-area-inset-top));
        padding-top: calc(var(--space-4) + env(safe-area-inset-top));
        background-color: var(--interactive-default);
        color: white;
        border-bottom: none;
    }

    .modal-title {
        color: white;
    }

    .modal-header .btn-icon,
    .modal-header .btn-close {
        color: white;
    }

    .modal-body {
        flex: 1;
        padding: var(--space-4);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .modal-footer {
        /* Safe Area 대응 */
        padding-bottom: calc(var(--space-4) + constant(safe-area-inset-bottom));
        padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom));
        flex-direction: column;
    }

    .modal-footer .btn {
        width: 100%;
        min-height: 44px;
    }
}

/* ==================== Toast ==================== */

.toast-container {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: 14px var(--space-4);
    background-color: var(--card-bg);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12), 0 0 0 1px rgba(0,0,0,0.04);
    min-width: 320px;
    max-width: 420px;
    animation: slideIn 0.3s cubic-bezier(0.21, 1.02, 0.73, 1);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-success {
    border-left: 4px solid var(--state-success);
}

.toast-warning {
    border-left: 4px solid var(--state-warning);
}

.toast-error {
    border-left: 4px solid var(--state-error);
}

.toast-info {
    border-left: 4px solid var(--state-info);
}

.toast-content {
    flex: 1;
}

.toast-content strong {
    display: block;
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

/* ==================== Pagination ==================== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-top: 1px solid var(--border-color);
}

.pagination-pages {
    display: flex;
    gap: var(--space-1);
}

.pagination-btn {
    min-width: 44px;
    height: 44px;
    padding: var(--space-2);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn:hover {
    background-color: var(--bg-tertiary);
}

.pagination-btn.is-active {
    background-color: var(--interactive-default);
    color: var(--text-inverse);
    border-color: var(--interactive-default);
}

/* ==================== Loading Spinner ==================== */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--interactive-default);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ==================== Breadcrumb ==================== */

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--interactive-default);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

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

/* Page Breadcrumb - 전역 위치 표시 */
.page-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    font-size: 12px;
    color: var(--text-tertiary);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    min-height: 28px;
}
.page-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}
.page-breadcrumb a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}
.page-breadcrumb .bc-sep {
    color: var(--text-tertiary);
    font-size: 10px;
}
.page-breadcrumb .bc-current {
    color: var(--text-primary);
    font-weight: 600;
}
.page-breadcrumb .bc-emoji {
    font-size: 13px;
}

/* ==================== Alert ==================== */

.alert {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid;
    margin-bottom: var(--space-4);
}

.alert-success {
    background-color: var(--color-success-light);
    border-color: var(--state-success);
    color: var(--alert-success-text, #065f46);
}

.alert-warning {
    background-color: var(--color-warning-light);
    border-color: var(--state-warning);
    color: var(--alert-warning-text, #92400e);
}

.alert-error {
    background-color: var(--color-error-light);
    border-color: var(--state-error);
    color: var(--alert-error-text, #991b1b);
}

.alert-info {
    background-color: var(--color-info-light);
    border-color: var(--state-info);
    color: var(--alert-info-text, #164e63);
}

/* ==================== Window Panel ==================== */

.window-panel {
    position: absolute;
    top: 0;
    left: 0;
    min-width: 1400px;
    opacity: 0;
    transition: opacity 150ms ease;
    min-height: 200px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: visible;
    transition: box-shadow 200ms ease, opacity 200ms ease;
}

.window-panel.is-active {
    box-shadow: var(--shadow-xl, 0 20px 25px -5px rgba(0,0,0,.1));
}

.window-title-bar {
    background: #6B7280 !important;
    color: #FFFFFF !important;
    padding: 7px var(--space-4) 3px var(--space-4) !important;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    border-bottom: 1px solid var(--border-color);
    cursor: grab;
    user-select: none;
}
.window-title-bar:active { cursor: grabbing; }

.window-title {
    font-weight: 600;
    font-size: 15px;
    flex: 1;
    color: #FFFFFF !important;
}

/* Window Title Bar Action Buttons (Refresh, AI 등) */
.window-title-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.window-title-actions:empty {
    display: none;
}

.title-bar-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
    padding: 4px 10px;
    border-radius: var(--radius-base);
    cursor: pointer;
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 150ms ease;
    white-space: nowrap;
    line-height: 1;
}

.title-bar-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.4);
}

.title-bar-btn.active {
    background: rgba(59, 130, 246, 0.08);
    color: var(--color-primary);
    border-color: rgba(59, 130, 246, 0.2);
}

.title-bar-btn i,
.title-bar-btn svg {
    width: 14px;
    height: 14px;
    display: inline-block;
    vertical-align: middle;
}

.window-controls {
    display: flex;
    gap: var(--space-1);
}

.window-controls button {
    width: 28px;
    height: 28px;
    border: none;
    background: none;
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 150ms ease;
    font-size: var(--text-sm);
}

.window-controls button:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
}

.window-panel.maximized {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 100;
    margin: 0;
    border-radius: 0;
    overflow: auto;
}

.window-panel.minimized {
    height: auto !important;
    min-height: unset;
}

.window-panel.minimized .window-content {
    display: none;
}

.window-controls button:last-child:hover {
    background-color: rgba(220, 38, 38, 0.1);
    color: var(--color-error, #DC2626);
}

.window-content {
    padding: var(--space-4);
}

/* Window resize edges (injected by JS) */
.window-resize-edge { position: absolute; z-index: 1; }
.window-resize-edge--e { top: 0; right: -4px; width: 8px; height: 100%; cursor: ew-resize; }
.window-resize-edge--s { bottom: -4px; left: 0; width: 100%; height: 8px; cursor: ns-resize; }
.window-resize-edge--se { right: -4px; bottom: -4px; width: 16px; height: 16px; cursor: nwse-resize; }

.window-panel.closed { display: none; }

/* Mobile: disable free-form, use flow layout */
@media (max-width: 767px) {
    .window-panel {
        position: static !important;
        top: auto !important;
        left: auto !important;
        width: auto !important;
        height: auto !important;
        min-width: 0;
        min-height: 0;
        margin-bottom: var(--space-4);
    }
    .window-resize-edge { display: none; }
}

.desktop-area {
    position: relative;
    background: transparent !important;
    min-height: 100vh;
}

.content-wrapper {
    min-height: calc(100vh - 68px);
}

/* ==================== Tab Navigation ==================== */
/* Tab Navigation — 디자인 표준: finance-cashflow 패턴 기준 */

.tab-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--space-3);
    background: var(--card-bg);
}

.tab-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 5px 16px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    color: #FFFFFF;
    border-bottom: none;
    margin-bottom: -1px;
    transition: all 200ms ease;
    white-space: nowrap;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.tab-btn:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.1);
}

.tab-btn.active {
    color: #FFFFFF;
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 8px;
    right: 8px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 3px 3px 0 0;
}

.tab-content {
    display: none;
}

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

/* Tab Variant: Pill/Segment Style */
.tab-nav--pill {
    display: inline-flex;
    padding: 4px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border-bottom: none;
    gap: 2px;
}

.tab-nav--pill .tab-btn {
    border-radius: var(--radius-base);
    margin-bottom: 0;
    padding: 8px 16px;
    font-size: 13px;
}

.tab-nav--pill .tab-btn.active {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.tab-nav--pill .tab-btn.active::after {
    display: none;
}

/* ==================== Stats Grid ==================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    text-align: left;
    transition: all 200ms ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.stat-card:hover {
    border-color: var(--border-hover, var(--border-color));
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.07);
    transform: translateY(-1px);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-top: var(--space-2);
}

/* ==================== Action Cards ==================== */

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.action-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.action-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--interactive-default, var(--color-primary));
}

.action-card-icon {
    font-size: 28px;
    margin-bottom: var(--space-1);
}

.action-card-title {
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
    font-size: var(--text-sm);
}

.action-card-description {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: var(--leading-normal);
}

/* ==================== Detail Panel ==================== */

.detail-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: var(--space-4);
    overflow: hidden;
}

.detail-panel-header {
    background: var(--bg-secondary);
    padding: var(--space-3);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.detail-panel-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0;
}

.detail-panel-body {
    padding: var(--space-3);
}

/* ==================== Info Grid ==================== */

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-3);
}

.info-item {
    padding: var(--space-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.info-item-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.info-item-value {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-primary);
}

/* ==================== Toolbar ==================== */

.toolbar {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
    align-items: center;
}

/* ==================== Page Modal ==================== */

.page-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: var(--z-modal, 1050);
    align-items: flex-start;
    justify-content: center;
    padding: 3vh var(--space-4);
    background: rgba(0, 0, 0, 0.5);
    overflow-y: auto;
}

.page-modal.show {
    display: flex;
    animation: modalOverlayIn 180ms ease-out both;
}

.page-modal.show .modal-container {
    animation: modalContentIn 200ms cubic-bezier(0.2, 0, 0, 1) both;
    margin: auto 0;
    max-height: 94vh;
    display: flex;
    flex-direction: column;
}

.page-modal .modal-body {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.page-modal .modal-header {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.page-modal .modal-title {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: all 150ms ease;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ==================== Page Form Elements ==================== */
/* .form-input, .form-select 표준 스타일은 위쪽 "Select & Input (표준 크기)" 참조 */

.form-textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--card-bg);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    min-height: 100px;
    resize: vertical;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--interactive-default, var(--color-primary));
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

/* ==================== Page Badge Variants ==================== */

.badge-active {
    background-color: var(--color-success-light);
    color: var(--state-success, #16a34a);
}

.badge-inactive,
.badge-default {
    background-color: var(--bg-tertiary);
    color: var(--text-tertiary);
}

/* ==================== Utilities ==================== */

.mono { font-family: var(--font-mono); }
.text-muted { color: var(--text-secondary); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.loading-text {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    padding: var(--space-4);
    text-align: center;
}
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }

/* ==================== Row Hover Actions (표준화) ==================== */
/* Drive 스타일 인라인 호버 액션 - 모든 data-table에서 재사용 */

.row-hover-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

@media (hover: hover) {
    .data-table tbody tr:hover .row-hover-actions,
    .data-table tbody tr:focus-within .row-hover-actions {
        opacity: 1;
        visibility: visible;
    }
}

/* 모바일 탭 지원 */
.data-table tbody tr.actions-visible .row-hover-actions {
    opacity: 1;
    visibility: visible;
}

.row-action-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 15px;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    padding: 0;
    flex-shrink: 0;
}

.row-action-btn:hover {
    background: var(--hover-bg-strong, rgba(0,0,0,0.08));
    color: var(--text-primary);
}

.row-action-btn:active {
    background: var(--active-bg, rgba(0,0,0,0.12));
}

.row-action-btn svg {
    width: 16px;
    height: 16px;
    pointer-events: none;
}

/* 상태별 액션 버튼 색상 */
.row-action-btn.action-approve:hover { color: var(--color-success); }
.row-action-btn.action-resign:hover { color: var(--color-error); }
.row-action-btn.action-revert:hover { color: var(--color-warning); }
/* Overlay 모드: 액션이 별도 컬럼 대신 행 위에 떠서 표시 */
.data-table th.th-actions-overlay,
.data-table td.td-actions-overlay {
    width: 0;
    min-width: 0;
    padding: 0 !important;
    border-left: none !important;
    overflow: visible;
    position: relative;
}
.data-table th.th-actions-overlay {
    border-bottom: none !important;
}
.data-table td.td-actions-overlay .row-hover-actions {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    z-index: 2;
    padding: 2px 6px 2px 24px;
    background: linear-gradient(90deg, transparent, var(--card-bg) 20px);
    border-radius: var(--radius-sm, 4px);
}
@media (hover: hover) {
    .data-table tbody tr:hover td.td-actions-overlay .row-hover-actions {
        background: linear-gradient(90deg, transparent, var(--hover-bg) 20px);
    }
}

.row-action-divider {
    display: inline-block;
    width: 1px;
    height: 16px;
    background: var(--border-color, #e0e0e0);
    margin: 0 2px;
    vertical-align: middle;
}

/* ==================== Skeleton Loading (전역 자동 주입) ==================== */

@keyframes skeleton-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.skeleton-cell {
    height: 12px;
    border-radius: var(--radius-sm);
    background: linear-gradient(
        90deg,
        var(--bg-tertiary, #e5e7eb) 25%,
        var(--bg-secondary, #f3f4f6) 50%,
        var(--bg-tertiary, #e5e7eb) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-row td {
    padding: 6px 8px !important;
}

.skeleton-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.skeleton-card-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.7;
}