:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --success: #10b981;
    --success-light: #d1fae5;
    --danger: #f43f5e;
    --danger-light: #ffe4e6;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --info: #3b82f6;
    --bg: #f5f5f7;
    --bg-card: #ffffff;
    --text-primary: #1e1e2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --nav-height: 56px;
    --header-height: 48px;
    --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}
html, body {
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover {
    color: var(--primary-dark);
    text-decoration: none;
    font-weight: inherit;
}
input, select, textarea, button {
    font-family: var(--font);
    font-size: 15px;
}
input[type=text],
input[type=password],
input[type=number] {
    font-size: 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    width: 100%;
}
input[type=text]:focus,
input[type=password]:focus,
input[type=number]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
select.form-control {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 32px 10px 14px;
    font-size: 15px;
    appearance: none;
    -webkit-appearance: none;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M2 4l4 4 4-4'/%3E%3C/svg%3E") no-repeat right 12px center;
    background-color: #fff;
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
}
.datetimepicker table tr td span {
    height: 40px !important;
    line-height: 40px !important;
    border-radius: 6px !important;
    font-size: 13px;
}
.datetimepicker {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow-lg);
    padding: 8px !important;
    z-index: 9999 !important;
}
.datetimepicker table {
    width: 100%;
}
.datetimepicker table tr td,
.datetimepicker table tr th {
    border-radius: 6px !important;
    font-size: 13px;
    height: 32px;
    width: 32px;
}
.datetimepicker table tr th {
    font-weight: 600;
    color: var(--text-secondary);
}
.datetimepicker thead tr:first-child th {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}
.datetimepicker thead tr:first-child th:hover {
    background: var(--bg) !important;
}
.datetimepicker table tr td.day:hover,
.datetimepicker table tr td.hour:hover,
.datetimepicker table tr td.minute:hover,
.datetimepicker table tr td span:hover {
    background: var(--bg) !important;
}
.datetimepicker table tr td.active,
.datetimepicker table tr td.active:hover,
.datetimepicker table tr td span.active,
.datetimepicker table tr td span.active:hover {
    background: var(--primary) !important;
    background-image: none !important;
    color: #fff !important;
    text-shadow: none !important;
}
.datetimepicker table tr td.today,
.datetimepicker table tr td.today:hover {
    background: var(--primary-light) !important;
    background-image: none !important;
    color: #fff !important;
    border-color: transparent !important;
}
.datetimepicker table tr td.old,
.datetimepicker table tr td.new {
    color: var(--text-muted) !important;
}
.datetimepicker th.switch {
    width: auto !important;
}
.datetimepicker-dropdown:before,
.datetimepicker-dropdown:after,
[class*=" datetimepicker-dropdown"]:before,
[class*=" datetimepicker-dropdown"]:after {
    display: none !important;
}
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-modern-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 12px rgba(99,102,241,0.35);
}
.btn-modern-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(99,102,241,0.45);
}
.btn-modern-primary:active {
    transform: scale(0.97);
}
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--border-light);
}
.page-content {
    padding: 0 16px;
    padding-top: calc(var(--header-height) + 8px);
    padding-bottom: calc(var(--nav-height) + 20px);
}
.page-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    margin: 0 !important;
    padding-bottom: 0 !important;
    background: rgba(255,255,255,0.88);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}
.page-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
}
.page-header-actions {
    display: flex;
    gap: 8px;
}
.header-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg);
    color: var(--text-secondary);
    transition: all 0.2s;
}
.header-btn:hover {
    background: var(--border);
    color: var(--text-primary);
}
.header-btn-primary {
    background: var(--primary);
    color: #fff;
}
.header-btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
}
.section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 20px 0 8px 4px;
}
.badge-income {
    background: var(--success-light);
    color: var(--success);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
.badge-expense {
    background: var(--danger-light);
    color: var(--danger);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
.loading-indicator {
    display: flex;
    justify-content: center;
    padding: 20px;
}
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.page-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 13px;
    gap: 12px;
}
.page-loading .spinner {
    width: 28px;
    height: 28px;
}
.skeleton {
    background: linear-gradient(90deg, var(--border-light) 25%, var(--border) 50%, var(--border-light) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.skeleton-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 14px 16px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 12px;
}
.skeleton-circle {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    flex-shrink: 0;
}
.skeleton-line {
    height: 14px;
    border-radius: 4px;
}
.skeleton-line.w60 { width: 60%; }
.skeleton-line.w40 { width: 40%; }
.skeleton-line.w30 { width: 30%; }
.skeleton-line.short { height: 10px; width: 50%; margin-top: 4px; }
.fade-in {
    animation: fadeIn 0.3s ease-in;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.pull-loading {
    text-align: center;
    padding: 12px;
    color: var(--text-muted);
    font-size: 12px;
}
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}
.empty-state svg {
    margin-bottom: 12px;
    color: var(--border);
}
.empty-state p {
    font-size: 14px;
}
.confirm-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: background 0.2s;
}
.confirm-overlay.show {
    background: rgba(0,0,0,0.4);
}
.confirm-overlay .confirm-dialog {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 28px 24px 20px;
    width: 280px;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    opacity: 0;
    transition: transform 0.2s, opacity 0.2s;
}
.confirm-overlay.show .confirm-dialog {
    transform: scale(1);
    opacity: 1;
}
.confirm-message {
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 20px;
}
.confirm-actions {
    display: flex;
    gap: 10px;
}
.confirm-btn {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.confirm-btn.cancel {
    background: var(--bg);
    color: var(--text-secondary);
}
.confirm-btn.ok {
    background: var(--danger);
    color: #fff;
}
.confirm-btn.cancel:hover { background: var(--border); }
.confirm-btn.ok:hover { opacity: 0.9; }