* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent: #1F497D;
    --accent-glow: rgba(31, 73, 125, 0.35);
    --accent-secondary: #2E75B6;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
    --border-color: #30363d;
    --gradient-primary: linear-gradient(135deg, #1F497D 0%, #2E75B6 100%);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.20);
    --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.28);
    --font-sm: 12px;
    --font-md: 14px;
    --font-lg: 18px;
    --font-xl: 24px;
}

.light-theme {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-card: #ffffff;
    --text-primary: #24292f;
    --text-secondary: #57606a;
    --border-color: #d0d7de;
}

body {
    font-family: 'Noto Sans SC', 'Rajdhani', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

.app-container {
    display: flex;
    min-height: 100vh;
    margin-left: 220px;
}

.sidebar {
    width: 220px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 16px 0;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 100;
    overflow-y: auto;
}

.logo {
    padding: 0 16px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo i {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

.nav-section {
    padding: 12px 0;
}

.nav-title {
    padding: 8px 16px;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-item {
    padding: 10px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    text-decoration: none;
    color: var(--text-primary);
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: var(--bg-card);
    border-left-color: var(--accent);
}

.nav-item.active {
    background: var(--bg-card);
    border-left-color: var(--accent);
    color: var(--accent);
}

.nav-icon {
    width: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-icon i {
    width: 18px;
    height: 18px;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    margin-top: 56px;
}

.header {
    height: 56px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-6);
    flex-shrink: 0;
    position: fixed;
    top: 0;
    left: 220px;
    right: 0;
    z-index: 99;
}

 .header-dashboard {
     display: grid;
     grid-template-columns: 1fr auto 1fr;
     gap: 16px;
 }

 .header-dashboard .page-title {
     justify-self: start;
 }

 .header-dashboard .header-center {
     justify-self: center;
 }

 .header-dashboard .header-actions {
     justify-self: end;
 }

.page-title {
    font-size: 18px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle,
.user-info {
    padding: 6px var(--space-3);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    border-color: var(--accent);
}

.theme-toggle i,
.user-info i {
    width: 14px;
    height: 14px;
}

.content {
    flex: 1;
    padding: var(--space-6);
    overflow-y: auto;
}

.content.content-center {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 40px;
}

.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 12px 16px;
    color: var(--text-secondary);
}

.site-footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
    font-size: 12px;
    letter-spacing: 0.5px;
}

.site-footer-record {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.site-footer-record img {
    width: 18px;
    height: 18px;
    display: inline-block;
}

.site-footer a {
    color: var(--text-secondary);
    text-decoration: none;
}

.site-footer a:hover {
    text-decoration: underline;
}

.content.content-center .form-card {
    width: 100%;
    max-width: 520px;
}

/* 模态框样式 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 17, 23, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.modal-overlay.show {
    display: block;
    opacity: 1;
}

.modal-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 480px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.show .modal-container {
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
}

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

.modal-body {
    padding: 24px;
}

.welcome-message {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.welcome-message h2 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--accent);
}

.welcome-message p {
    color: var(--text-secondary);
}

.page-intro {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: 12px 14px;
    margin-bottom: var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    line-height: 1.65;
}

.page-intro i {
    width: 16px;
    height: 16px;
    color: var(--accent);
    margin-top: 2px;
    flex-shrink: 0;
}

.page-intro-text {
    font-size: var(--font-md);
}

.meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: 10px 14px;
    margin-bottom: var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

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

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.meta-item i {
    width: 14px;
    height: 14px;
    color: var(--accent);
}

.meta-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.meta-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 6px 10px;
    border-radius: 999px;
    font-size: var(--font-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    white-space: nowrap;
}

.meta-chip i {
    width: 14px;
    height: 14px;
}

.meta-chip.on {
    border-color: rgba(31, 73, 125, 0.45);
    color: var(--accent);
}

.meta-chip.off {
    opacity: 0.8;
}

.switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    user-select: none;
}

.switch input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-track {
    width: 40px;
    height: 22px;
    border-radius: 999px;
    background: rgba(139, 148, 158, 0.25);
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    padding: 2px;
    transition: all 0.18s ease;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.06);
}

.switch-thumb {
    width: 18px;
    height: 18px;
    border-radius: 999px;
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    transform: translateX(0);
    transition: transform 0.18s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.switch input:checked + .switch-track {
    background: rgba(31, 73, 125, 0.35);
    border-color: rgba(31, 73, 125, 0.55);
}

.switch input:checked + .switch-track .switch-thumb {
    transform: translateX(18px);
}

.switch input:focus-visible + .switch-track {
    outline: 2px solid rgba(31, 73, 125, 0.5);
    outline-offset: 2px;
}

.toast-container {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 280px;
    max-width: 420px;
    padding: 10px 12px;
    border-radius: 10px;
    background: rgba(22, 27, 34, 0.92);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 24px rgba(0,0,0,0.35);
    backdrop-filter: blur(10px);
    transform: translateY(-12px);
    opacity: 0;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-icon {
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-message {
    font-size: 13px;
    color: var(--text-primary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.toast.success {
    border-color: rgba(63, 185, 80, 0.45);
}

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

.toast.error {
    border-color: rgba(248, 81, 73, 0.45);
}

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

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

.light-theme .switch-track {
    background: rgba(0, 0, 0, 0.06);
    border-color: var(--border-color);
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.04);
}

.light-theme .switch-thumb {
    background: #ffffff;
    border-color: rgba(0,0,0,0.08);
    box-shadow: 0 2px 10px rgba(0,0,0,0.10);
}

.light-theme .switch input:checked + .switch-track {
    background: rgba(31, 73, 125, 0.18);
    border-color: rgba(31, 73, 125, 0.35);
}

.light-theme .toast {
    background: rgba(255, 255, 255, 0.92);
    border-color: var(--border-color);
    box-shadow: 0 10px 24px rgba(0,0,0,0.12);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-error {
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-success {
    background: rgba(63, 185, 80, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert i {
    width: 16px;
    height: 16px;
    margin-right: 8px;
    vertical-align: middle;
}

.form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px;
    max-width: 500px;
}

.form-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.form-card-header i {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.form-card-header h2 {
    font-size: 18px;
    font-weight: 600;
}

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

.password-form .form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.password-form .form-label i {
    width: 16px;
    height: 16px;
}

.password-form .form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s ease;
}

.password-form .form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
}

.btn i {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

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

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

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-icon {
    padding: 6px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
}

.btn-icon:hover {
    background: var(--bg-secondary);
    color: var(--danger);
}

.upload-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(31, 73, 125, 0.06);
}

.upload-icon {
    margin-bottom: 16px;
}

.upload-icon i {
    width: 64px;
    height: 64px;
    color: var(--accent);
}

.upload-zone h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.upload-hint {
    font-size: 13px;
}

.upload-form {
    padding: 24px 0;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 24px;
}

.file-info i:first-child {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.file-info span {
    flex: 1;
    font-weight: 500;
}

.date-selector {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.date-selector .form-group {
    flex: 1;
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

 .form-input {
     width: 100%;
     padding: 10px 12px;
     background: var(--bg-secondary);
     border: 1px solid var(--border-color);
     border-radius: var(--radius-sm);
     color: var(--text-primary);
     font-size: 14px;
     transition: all 0.2s ease;
 }

 .form-input:focus {
     outline: none;
     border-color: var(--accent);
     box-shadow: 0 0 0 3px var(--accent-glow);
 }

.form-select:focus {
    outline: none;
    border-color: var(--accent);
}

.upload-progress {
    text-align: center;
    padding: 40px;
}

.progress-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 100%;
    animation: progress 2s ease-in-out infinite;
}

@keyframes progress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.upload-result {
    text-align: center;
    padding: 40px;
}

.result-icon {
    margin-bottom: 16px;
}

.upload-result h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.upload-result p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.tips-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.tips-card h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--accent);
}

.tips-card h4 i {
    width: 18px;
    height: 18px;
}

.tips-card ul {
    list-style: none;
    padding: 0;
}

.tips-card li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
    font-size: 14px;
}

.tips-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

.data-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
}

.card-header h2 i {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

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

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

.data-table th,
.data-table td {
    padding: 14px 24px;
    text-align: left;
}

.data-table th {
    background: var(--bg-secondary);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

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

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

.ledger-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.ledger-toolbar .filter-group .form-select {
    min-width: 160px;
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.metrics-row.metrics-row-2 {
    grid-template-columns: repeat(2, 1fr);
}

.metrics-row.metrics-row-3 {
    grid-template-columns: repeat(3, 1fr);
}

.ledger-filters {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card);
}

.filter-row {
    display: grid;
    grid-template-columns: 1.2fr 1.2fr 1.4fr 1.6fr 0.7fr auto;
    gap: 12px;
    align-items: end;
}

.filter-item label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    white-space: nowrap;
}

.filter-item .form-input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s ease;
}

.filter-item .form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.range-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
}

.range-sep {
    color: var(--text-secondary);
    font-size: 12px;
}

.filter-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    padding-bottom: 1px;
}

.sort-link {
    color: var(--text-secondary);
    text-decoration: none;
}

.sort-link:hover {
    color: var(--accent);
}

.sort-link.active {
    color: var(--accent);
    font-weight: 600;
}

.sort-ind {
    display: inline-block;
    margin-left: 6px;
    font-size: 12px;
    line-height: 1;
    opacity: 0.95;
}

.pagination-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: 14px 24px;
    background: var(--bg-card);
}

.pagination-info {
    font-size: 13px;
    color: var(--text-secondary);
}

.pagination-links {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
}

.page-btn:hover {
    border-color: rgba(31, 73, 125, 0.6);
}

.page-current {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 0 6px;
}

@media (max-width: 1200px) {
    .filter-row {
        grid-template-columns: 1fr 1fr;
    }
    .filter-actions {
        justify-content: flex-start;
    }
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--accent);
    color: #fff;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.empty-state {
    text-align: center;
    padding: 60px 40px;
}

.empty-state i {
    width: 64px;
    height: 64px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* 驾驶舱样式 */
.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    white-space: nowrap;
}

.filter-group label {
    color: var(--text-secondary);
    white-space: nowrap;
}

.header-dashboard .filter-group .form-select {
    min-width: 150px;
}

.form-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    color-scheme: dark;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 8px 36px 8px 12px;
    line-height: 1.2;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background-image:
        linear-gradient(45deg, transparent 50%, var(--text-secondary) 50%),
        linear-gradient(135deg, var(--text-secondary) 50%, transparent 50%);
    background-position:
        calc(100% - 18px) 50%,
        calc(100% - 12px) 50%;
    background-size:
        6px 6px,
        6px 6px;
    background-repeat: no-repeat;
}

.form-select:hover {
    border-color: rgba(31, 73, 125, 0.6);
}

.form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(31, 73, 125, 0.15);
}

/* 下拉展开列表（不同浏览器支持程度不同，但可改善部分环境） */
.form-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.form-select option:checked {
    background: var(--accent);
    color: #ffffff;
}

.light-theme .form-select option {
    background: #ffffff;
    color: #111827;
}

.light-theme .form-select {
    color-scheme: light;
}

.form-select-sm {
    padding: 6px 32px 6px 10px;
    font-size: 13px;
    border-radius: 8px;
}

.metrics-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    display: flex;
    gap: 16px;
    transition: all 0.2s ease;
}

.metric-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(31, 73, 125, 0.14);
}

.metric-card.warning {
    border-color: var(--danger);
}

.metric-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-icon i {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.metric-card.warning .metric-icon i {
    color: var(--danger);
}

.metric-info {
    flex: 1;
}

.metric-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.metric-value {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.metric-change {
    font-size: 12px;
    color: var(--text-secondary);
}

.metric-change.up {
    color: var(--success);
}

.metric-change.down {
    color: var(--danger);
}

.metric-change.danger {
    color: var(--danger);
}

.charts-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.chart-card.chart-full {
    grid-column: span 2;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.chart-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
}

.chart-header .form-select-sm {
    width: 96px;
    min-width: 96px;
}

.chart-header h3 i {
    width: 18px;
    height: 18px;
    color: var(--accent);
}

.chart-container {
    height: 300px;
    padding: 16px;
}

.chart-container.chart-large {
    height: 350px;
}

.chart-container.chart-tall {
    height: 380px;
}

.chart-container.chart-xlarge {
    height: 430px;
    padding-bottom: 12px;
}

.reduction-card-body {
    padding: 16px 20px 20px;
}

.reduction-kpi {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 14px;
}

.reduction-kpi-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 14px;
}

.reduction-kpi-item .label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.reduction-kpi-item .value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.reduction-progress {
    height: 10px;
    background: var(--bg-secondary);
    border-radius: 999px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.reduction-progress-fill {
    height: 100%;
    width: 0;
    background: var(--accent);
    transition: width 0.4s ease;
}

.reduction-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.reduction-row-progress {
    flex: 1;
    min-width: 120px;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 999px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.reduction-row-progress-fill {
    height: 100%;
    width: 0;
    background: var(--accent);
    transition: width 0.4s ease;
}

.reduction-row-progress-fill.ok {
    background: var(--success);
}

.reduction-row-progress-fill.bad {
    background: var(--danger);
}

.reduction-row-progress-fill.warn {
    background: var(--warning);
}

.reduction-row-progress-fill.none {
    background: rgba(139, 148, 158, 0.65);
}

.reduction-row-pct {
    width: 64px;
    text-align: right;
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.status-tag {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.status-tag.ok {
    border-color: rgba(63, 185, 80, 0.55);
    color: var(--success);
}

.status-tag.bad {
    border-color: rgba(248, 81, 73, 0.55);
    color: var(--danger);
}

.status-tag.warn {
    border-color: rgba(210, 153, 34, 0.55);
    color: var(--warning);
}

.ai-card-body {
    padding: 16px 20px 20px;
}

.ai-section-card {
    margin-top: 16px;
}

.ai-controls {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.ai-message {
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 10px;
}

.ai-message.warn {
    border-color: rgba(210, 153, 34, 0.45);
    color: var(--warning);
}

.ai-message.bad {
    border-color: rgba(248, 81, 73, 0.45);
    color: var(--danger);
}

.ai-results {
    margin-top: 12px;
}

.ai-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 12px;
}

.ai-item-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    padding: 12px 14px;
}

.ai-item-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
}

.ai-item-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.3;
}

.ai-item-tag {
    flex: 0 0 auto;
    padding: 3px 10px;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--accent);
    background: rgba(88, 166, 255, 0.08);
    white-space: nowrap;
}

.ai-item-meta {
    display: grid;
    gap: 6px;
    margin-bottom: 10px;
}

.ai-meta-row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    font-size: 12px;
}

.ai-meta-row .k {
    color: var(--text-secondary);
}

.ai-meta-row .v {
    color: var(--text-primary);
    font-weight: 600;
    text-align: right;
}

.ai-item-suggestion {
    font-size: 12px;
    line-height: 1.55;
    color: var(--text-secondary);
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
    min-height: 96px;
}

.ai-item-suggestion.ai-typing::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 14px;
    margin-left: 2px;
    background: var(--accent);
    vertical-align: -2px;
    animation: aiCaretBlink 1s step-end infinite;
}

@keyframes aiCaretBlink {
    0%, 50% { opacity: 1; }
    50.01%, 100% { opacity: 0; }
}

@media (max-width: 1200px) {
    .metrics-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .charts-row {
        grid-template-columns: 1fr;
    }
    
    .chart-card.chart-full {
        grid-column: span 1;
    }
}

@media (max-width: 1200px) {
    .ai-results-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
}

@media (max-width: 900px) {
    .ai-results-grid {
        grid-template-columns: 1fr;
    }
}