/* ========================================
   Dark Mode & Enhanced Styles Additions
   이 파일은 styles.css와 함께 로드됩니다
======================================== */

/* ========================================
   Dark Mode Theme Toggle Button
======================================== */

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--gray-100);
    color: var(--gray-700);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    width: 100%;
    margin-bottom: 8px;
}

.theme-toggle-btn:hover {
    background: var(--gray-200);
    color: var(--gray-900);
}

.theme-toggle-btn i {
    font-size: 16px;
}

/* ========================================
   Mobile Hamburger Button & Overlay
======================================== */

.hamburger-btn {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 101;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 22px;
    cursor: pointer;
    box-shadow: var(--box-shadow-lg);
    transition: var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.hamburger-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.hamburger-btn:active {
    transform: scale(0.95);
}

/* 햄버거 아이콘 애니메이션 */
.hamburger-btn i {
    transition: transform 0.3s ease;
}

.sidebar.active ~ .hamburger-btn i {
    transform: rotate(90deg);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 99;
    opacity: 0;
    transition: opacity 0.3s ease;
    -webkit-tap-highlight-color: transparent;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

@media (max-width: 768px) {
    .hamburger-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .main-content {
        padding-top: 76px !important;
    }

    /* 사이드바 스와이프 제스처 개선 */
    .sidebar {
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 2px 0 16px rgba(0, 0, 0, 0.2);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    /* 모바일 네비게이션 아이템 터치 개선 */
    .sidebar .nav-item {
        padding: 16px 20px;
        margin: 4px 8px;
        border-radius: 10px;
        min-height: 52px;
        display: flex;
        align-items: center;
        gap: 14px;
        font-size: 16px;
    }

    .sidebar .nav-item i {
        font-size: 20px;
        width: 24px;
    }

    /* 사이드바 푸터 개선 */
    .sidebar-footer {
        padding: 16px;
    }

    .sidebar-footer .user-info {
        padding: 12px;
        background: var(--gray-50);
        border-radius: 10px;
        margin-bottom: 12px;
    }

    .sidebar-footer .theme-toggle-btn,
    .sidebar-footer .logout-btn {
        min-height: 48px;
        font-size: 15px;
        padding: 12px 16px;
    }
}

/* ========================================
   Enhanced Toast Notification System
======================================== */

.toast-notification {
    position: fixed;
    top: -100px;
    right: 24px;
    background: white;
    padding: 16px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10000;
    max-width: 90vw;
    min-width: 320px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border-left: 4px solid var(--gray-400);
}

.toast-notification.show {
    top: 24px;
}

.toast-notification.hide {
    opacity: 0;
    transform: translateX(400px);
}

.toast-notification i {
    font-size: 20px;
    flex-shrink: 0;
}

.toast-notification span {
    font-size: 14px;
    font-weight: 500;
    flex: 1;
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
    font-size: 16px;
    transition: var(--transition);
}

.toast-close:hover {
    color: var(--gray-700);
}

.toast-success {
    border-left-color: var(--success);
}

.toast-success i {
    color: var(--success);
}

.toast-error {
    border-left-color: var(--danger);
}

.toast-error i {
    color: var(--danger);
}

.toast-warning {
    border-left-color: var(--warning);
}

.toast-warning i {
    color: var(--warning);
}

.toast-info {
    border-left-color: var(--info);
}

.toast-info i {
    color: var(--info);
}

@media (max-width: 480px) {
    .toast-notification {
        right: 12px;
        left: 12px;
        min-width: auto;
        max-width: none;
    }
}

/* ========================================
   Loading Overlay
======================================== */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.loading-overlay.show {
    opacity: 1;
}

.loading-content {
    background: white;
    padding: 32px 48px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow-lg);
}

.loading-spinner-large {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-200);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

.loading-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--gray-700);
    margin: 0;
}

@media (max-width: 480px) {
    .loading-content {
        padding: 24px 32px;
    }

    .loading-spinner-large {
        width: 40px;
        height: 40px;
    }
}

/* ========================================
   Skeleton Loading
======================================== */

.skeleton-row td {
    padding: 16px;
}

.skeleton {
    height: 16px;
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 4px;
}

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

/* ========================================
   Form Validation States
======================================== */

.form-group input.error,
.form-group textarea.error,
.form-group select.error {
    border-color: var(--danger) !important;
    background-color: #FEF2F2 !important;
}

.form-group input.error:focus,
.form-group textarea.error:focus,
.form-group select.error:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1) !important;
}

.field-error {
    color: var(--danger);
    font-size: 12px;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.field-error::before {
    content: '\f071';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}

/* ========================================
   Micro Interactions & Animations
======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
}

.animate-fade-in-scale {
    animation: fadeInScale 0.3s ease-out;
}

/* Button ripple effect */
button:not(.no-ripple) {
    position: relative;
    overflow: hidden;
}

button:not(.no-ripple)::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

button:not(.no-ripple):active::after {
    width: 200px;
    height: 200px;
}

/* Card hover lift effect */
.card-hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* ========================================
   DARK MODE THEME
======================================== */

.dark-mode {
    /* Dark mode color overrides - 더 강한 대비 */
    --gray-50: #0F1117;
    --gray-100: #1A1D29;
    --gray-200: #2D3142;
    --gray-300: #3F4451;
    --gray-400: #6B7280;
    --gray-500: #9CA3AF;
    --gray-600: #D1D5DB;
    --gray-700: #E5E7EB;
    --gray-800: #F3F4F6;
    --gray-900: #FFFFFF;

    /* Adjust shadows for dark mode */
    --box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.5), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.5);

    /* Primary colors stay vibrant in dark mode */
    --primary: #818CF8;
    --primary-dark: #6366F1;
    --primary-light: #A5B4FC;

    /* 추가 색상 대비 개선 */
    --success: #34D399;
    --warning: #FBBF24;
    --danger: #F87171;
    --info: #60A5FA;
}

.dark-mode body {
    background: var(--gray-50);
    color: var(--gray-900);
}

.dark-mode .sidebar {
    background: var(--gray-100);
    border-right-color: var(--gray-200);
}

.dark-mode .logo {
    border-bottom-color: var(--gray-200);
}

.dark-mode .nav-item {
    color: var(--gray-700);
}

.dark-mode .nav-item:hover {
    background: var(--gray-200);
    color: var(--primary-light);
}

.dark-mode .nav-item.active {
    background: var(--primary);
    color: white;
}

.dark-mode .menu-divider {
    background: var(--gray-200);
}

.dark-mode .sidebar-footer {
    border-top-color: var(--gray-200);
}

.dark-mode .user-name {
    color: var(--gray-800);
}

.dark-mode .user-role {
    color: var(--gray-500);
}

.dark-mode .theme-toggle-btn,
.dark-mode .logout-btn {
    background: var(--gray-200);
    color: var(--gray-700);
}

.dark-mode .theme-toggle-btn:hover,
.dark-mode .logout-btn:hover {
    background: var(--gray-300);
    color: var(--gray-900);
}

.dark-mode .card {
    background: var(--gray-100);
}

.dark-mode .stat-card {
    background: var(--gray-100);
}

.dark-mode .card-title {
    color: var(--gray-900);
    border-bottom-color: var(--gray-200);
}

.dark-mode .card-content h3 {
    color: var(--gray-900);
}

.dark-mode .card-content p {
    color: var(--gray-600);
}

.dark-mode .btn-outline {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.dark-mode .btn-outline:hover {
    background: var(--gray-200);
}

.dark-mode .btn-icon {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-600);
}

.dark-mode .btn-icon:hover {
    background: var(--gray-200);
}

.dark-mode .search-box input {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-900);
}

.dark-mode .search-box input::placeholder {
    color: var(--gray-500);
}

.dark-mode .filter-select,
.dark-mode .filter-group select,
.dark-mode .filter-group input {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-900);
}

.dark-mode .data-table thead {
    background: var(--gray-200);
}

.dark-mode .data-table th {
    color: var(--gray-900);
    border-bottom-color: var(--gray-300);
    font-weight: 600;
}

.dark-mode .data-table td {
    border-bottom-color: var(--gray-200);
    color: var(--gray-800);
}

.dark-mode .data-table tbody tr:hover {
    background: var(--gray-200);
}

.dark-mode .empty-state i {
    color: var(--gray-400);
}

.dark-mode .empty-state h3 {
    color: var(--gray-800);
}

.dark-mode .empty-state p {
    color: var(--gray-600);
}

.dark-mode .modal {
    background: rgba(0, 0, 0, 0.8);
}

.dark-mode .modal-content {
    background: var(--gray-100);
}

.dark-mode .modal-header {
    border-bottom-color: var(--gray-200);
    background: var(--gray-100);
}

.dark-mode .modal-header h2 {
    color: var(--gray-900);
}

.dark-mode .detail-section {
    background: var(--gray-200);
}

.dark-mode .detail-section h3 {
    color: var(--gray-900);
}

.dark-mode .detail-item {
    border-bottom-color: var(--gray-300);
}

.dark-mode .detail-label {
    color: var(--gray-600);
}

.dark-mode .detail-value {
    color: var(--gray-900);
}

.dark-mode .detail-memo {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

.dark-mode .detail-input {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-900);
}

.dark-mode .form-group input,
.dark-mode .form-group textarea,
.dark-mode .form-group select {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-900);
}

.dark-mode .form-group input::placeholder,
.dark-mode .form-group textarea::placeholder {
    color: var(--gray-500);
}

.dark-mode .form-group input:read-only,
.dark-mode .form-group input[readonly] {
    background: var(--gray-200);
    color: var(--gray-600);
}

.dark-mode .form-group input.error,
.dark-mode .form-group textarea.error,
.dark-mode .form-group select.error {
    background-color: #3F1F1F !important;
}

.dark-mode .upload-area {
    background: var(--gray-200);
    border-color: var(--gray-400);
}

.dark-mode .upload-icon {
    color: var(--gray-500);
}

.dark-mode .upload-text {
    color: var(--gray-800);
}

.dark-mode .upload-hint {
    color: var(--gray-600);
}

.dark-mode .amount-summary {
    background: var(--gray-200);
}

.dark-mode .amount-summary p,
.dark-mode .amount-summary strong {
    color: var(--gray-800);
}

.dark-mode .toast-notification {
    background: var(--gray-100);
    color: var(--gray-900);
}

.dark-mode .loading-content {
    background: var(--gray-100);
}

.dark-mode .loading-text {
    color: var(--gray-800);
}

.dark-mode .chart-header {
    border-bottom-color: var(--gray-300);
}

.dark-mode .chart-header h3 {
    color: var(--gray-900);
}

.dark-mode .merchant-name {
    color: var(--gray-900);
}

.dark-mode .merchant-amount {
    color: var(--gray-600);
}

.dark-mode .merchant-percent {
    color: var(--gray-800);
}

.dark-mode .merchant-bar {
    background: var(--gray-300);
}

.dark-mode .hamburger-btn {
    background: var(--primary);
}

.dark-mode .subtitle {
    color: var(--gray-700);
}

/* 헤더 및 제목 요소 */
.dark-mode h1,
.dark-mode .main-header h1 {
    color: var(--gray-900);
}

.dark-mode h2 {
    color: var(--gray-900);
}

.dark-mode h3 {
    color: var(--gray-900);
}

.dark-mode p {
    color: var(--gray-800);
}

.dark-mode label,
.dark-mode .filter-group label {
    color: var(--gray-800);
    font-weight: 500;
}

.dark-mode .main-header {
    background: var(--gray-100);
    border-bottom-color: var(--gray-200);
}

.dark-mode .header-left h1 {
    color: var(--gray-900);
}

.dark-mode .header-left .subtitle {
    color: var(--gray-700);
}

/* ========================================
   Accessibility Enhancements
======================================== */

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 8px 0;
    z-index: 10001;
    transition: top 0.3s ease;
}

.skip-to-main:focus {
    top: 0;
}

/* Screen reader only class */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    button,
    a,
    input,
    select,
    textarea {
        border-width: 2px;
    }
}

/* ========================================
   RPA Section Styles
======================================== */

.rpa-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--gray-800);
}

.rpa-selected-count {
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    border-radius: 8px;
    font-weight: 600;
    color: var(--primary);
}

.dark-mode .rpa-label {
    color: var(--gray-800);
}

.dark-mode .rpa-selected-count {
    background: var(--gray-200);
    color: var(--primary-light);
}

.rpa-control-section > div {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.rpa-control-section .rpa-mode-wrapper {
    flex: 1;
    min-width: 200px;
}

.rpa-control-section .rpa-buttons {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .rpa-control-section > div {
        flex-direction: column;
        align-items: stretch;
    }

    .rpa-control-section .rpa-mode-wrapper {
        width: 100%;
    }

    .rpa-control-section .rpa-buttons {
        width: 100%;
        justify-content: stretch;
    }

    .rpa-control-section .rpa-buttons button {
        flex: 1;
        min-width: 120px;
    }

    .rpa-selected-count {
        text-align: center;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .rpa-control-section .rpa-buttons {
        flex-direction: column;
    }

    .rpa-control-section .rpa-buttons button {
        width: 100%;
    }
}

/* ========================================
   모바일 테이블 카드 다크모드
======================================== */

@media (max-width: 768px) {
    .dark-mode .data-table tr {
        background: var(--gray-100);
        border-color: var(--gray-200);
    }

    .dark-mode .data-table td {
        border-bottom-color: var(--gray-200);
    }

    .dark-mode .data-table td::before {
        color: var(--gray-600);
    }

    /* 폼 액션 다크모드 */
    .dark-mode .form-actions {
        background: var(--gray-100);
        border-top-color: var(--gray-200);
    }

    /* 사이드바 푸터 다크모드 */
    .dark-mode .sidebar-footer .user-info {
        background: var(--gray-200);
    }
}

/* ========================================
   Print Styles
======================================== */

@media print {
    .sidebar,
    .hamburger-btn,
    .sidebar-overlay,
    .header-right,
    .filter-section,
    .action-buttons,
    .pagination,
    .toast-notification,
    .theme-toggle-btn {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 0;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--gray-200);
        page-break-inside: avoid;
    }

    body {
        background: white;
    }

    .dark-mode body {
        background: white;
        color: black;
    }
}