/**
 * 悄咪记账 - 统一设计系统
 * Common Design System for Qiaomi Accounting
 * Version: 1.0.0
 */

/* ============================================
   1. Design Tokens (CSS Variables)
   ============================================ */
:root {
    /* Brand Colors */
    --brand-primary: #2D6AA6;
    --brand-primary-dark: #1C4D7A;
    --brand-primary-light: #4A8BC9;
    --brand-accent: #FFC0CF;

    /* Background & Surface */
    --brand-background: #EAF2FB;
    --brand-surface: #FFFFFF;
    --brand-surface-hover: #F8FAFC;

    /* Text & Borders */
    --brand-outline: #CAD7E8;
    --brand-muted: #5777A0;
    --brand-text: #0F172A;
    --brand-text-secondary: #64748B;

    /* Shadows */
    --brand-shadow: rgba(45, 106, 166, 0.18);
    --brand-shadow-lg: rgba(45, 106, 166, 0.25);

    /* Semantic Colors */
    --color-success: #10B981;
    --color-success-bg: #D1FAE5;
    --color-danger: #DC2626;
    --color-danger-bg: #FEE2E2;
    --color-warning: #F59E0B;
    --color-warning-bg: #FEF3C7;
    --color-info: #3B82F6;
    --color-info-bg: #DBEAFE;

    /* Platform Colors */
    --brand-wechat: #07C160;
    --brand-alipay: #1677FF;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* ============================================
   2. Base Styles
   ============================================ */
body {
    font-family: var(--font-family);
    background: var(--brand-background);
    color: var(--brand-text);
    line-height: 1.5;
}

/* ============================================
   3. Reusable Card Component
   ============================================ */
.qm-card {
    background: var(--brand-surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 15px var(--brand-shadow);
    border: 1px solid var(--brand-outline);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.qm-card:hover {
    box-shadow: 0 8px 25px var(--brand-shadow-lg);
    transform: translateY(-2px);
}

.qm-card-header {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 2px solid var(--brand-outline);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.qm-card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--brand-primary);
    margin: 0;
}

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

.qm-card-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--brand-outline);
    background: var(--brand-surface-hover);
}

/* ============================================
   4. Stat Card Component
   ============================================ */
.qm-stat-card {
    background: var(--brand-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.qm-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.qm-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* Stat Card Variants */
.qm-stat-card.income {
    border-color: rgba(16, 185, 129, 0.2);
    background: linear-gradient(135deg, #fff 0%, var(--brand-background) 100%);
}

.qm-stat-card.income::before {
    background: linear-gradient(90deg, #10b981, #059669);
}

.qm-stat-card.expense {
    border-color: rgba(220, 38, 38, 0.2);
    background: linear-gradient(135deg, #fff 0%, #fef2f2 100%);
}

.qm-stat-card.expense::before {
    background: linear-gradient(90deg, #dc2626, #ef4444);
}

.qm-stat-card.balance {
    border-color: rgba(59, 130, 246, 0.2);
    background: linear-gradient(135deg, #fff 0%, #eff6ff 100%);
}

.qm-stat-card.balance::before {
    background: linear-gradient(90deg, #3b82f6, #2563eb);
}

.qm-stat-card.count {
    border-color: rgba(139, 92, 246, 0.2);
    background: linear-gradient(135deg, #fff 0%, #f5f3ff 100%);
}

.qm-stat-card.count::before {
    background: linear-gradient(90deg, #8b5cf6, #a855f7);
}

.qm-stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: var(--space-sm);
}

.qm-stat-label {
    font-size: var(--font-size-sm);
    color: var(--brand-muted);
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.qm-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--brand-text);
}

.qm-stat-value.income {
    color: var(--color-success);
}

.qm-stat-value.expense {
    color: var(--color-danger);
}

.qm-stat-value.balance {
    color: var(--color-info);
}

/* ============================================
   5. List Item Card Component
   ============================================ */
.qm-list-item {
    background: var(--brand-surface);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    box-shadow: 0 2px 8px var(--brand-shadow);
    border: 1px solid var(--brand-outline);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.qm-list-item:hover {
    box-shadow: 0 4px 12px var(--brand-shadow);
    border-left-color: var(--brand-primary);
    border-left-width: 3px;
    background: var(--brand-surface-hover);
    transform: translateY(-2px);
}

.qm-list-item-content {
    flex: 1;
    min-width: 0;
}

.qm-list-item-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--brand-text);
    margin-bottom: var(--space-xs);
}

.qm-list-item-subtitle {
    font-size: var(--font-size-sm);
    color: var(--brand-muted);
}

.qm-list-item-actions {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

/* ============================================
   6. Button Styles
   ============================================ */
.qm-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
}

.qm-btn-primary {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px var(--brand-shadow);
}

.qm-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px var(--brand-shadow-lg);
    color: white;
}

.qm-btn-secondary {
    background: var(--brand-surface);
    color: var(--brand-primary);
    border: 2px solid var(--brand-outline);
}

.qm-btn-secondary:hover {
    border-color: var(--brand-primary);
    background: var(--brand-background);
}

.qm-btn-success {
    background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
    color: white;
}

.qm-btn-danger {
    background: linear-gradient(135deg, var(--color-danger) 0%, #B91C1C 100%);
    color: white;
}

.qm-btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
}

.qm-btn-lg {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-lg);
}

/* ============================================
   7. Badge & Tag Styles
   ============================================ */
.qm-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.qm-badge-primary {
    background: rgba(45, 106, 166, 0.15);
    color: var(--brand-primary);
}

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

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

.qm-badge-wechat {
    background: rgba(7, 193, 96, 0.12);
    color: var(--brand-wechat);
}

.qm-badge-alipay {
    background: rgba(22, 119, 255, 0.12);
    color: var(--brand-alipay);
}

/* ============================================
   8. Form Elements
   ============================================ */
.qm-input,
.qm-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--brand-outline);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    background: var(--brand-surface);
}

.qm-input:focus,
.qm-select:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(45, 106, 166, 0.15);
}

.qm-input::placeholder {
    color: var(--brand-muted);
    opacity: 0.6;
}

/* ============================================
   9. Section & Layout Helpers
   ============================================ */
.qm-section {
    margin-bottom: var(--space-xl);
}

.qm-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.qm-section-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: 0;
}

.qm-section-title i {
    font-size: var(--font-size-xl);
}

/* Grid System */
.qm-grid {
    display: grid;
    gap: var(--space-md);
}

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

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

.qm-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 992px) {
    .qm-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .qm-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {

    .qm-grid-4,
    .qm-grid-3,
    .qm-grid-2 {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   10. Animations
   ============================================ */
@keyframes qm-fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes qm-slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes qm-float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-8px);
    }
}

.qm-animate-fadeIn {
    animation: qm-fadeIn 0.3s ease forwards;
}

.qm-animate-slideDown {
    animation: qm-slideDown 0.3s ease forwards;
}

.qm-animate-float {
    animation: qm-float 3s ease-in-out infinite;
}

/* ============================================
   11. Empty State
   ============================================ */
.qm-empty-state {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
}

.qm-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--brand-background) 0%, #e0f2fe 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.15);
    animation: qm-float 3s ease-in-out infinite;
}

.qm-empty-icon i {
    font-size: 32px;
    color: var(--color-info);
}

.qm-empty-state h3 {
    font-size: var(--font-size-xl);
    color: var(--brand-text-secondary);
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.qm-empty-state p {
    color: var(--brand-muted);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-base);
}

/* ============================================
   12. Utility Classes
   ============================================ */
.qm-text-primary {
    color: var(--brand-primary) !important;
}

.qm-text-success {
    color: var(--color-success) !important;
}

.qm-text-danger {
    color: var(--color-danger) !important;
}

.qm-text-warning {
    color: var(--color-warning) !important;
}

.qm-text-muted {
    color: var(--brand-muted) !important;
}

.qm-bg-primary {
    background: var(--brand-primary) !important;
}

.qm-bg-success {
    background: var(--color-success) !important;
}

.qm-bg-danger {
    background: var(--color-danger) !important;
}

.qm-mb-0 {
    margin-bottom: 0 !important;
}

.qm-mb-sm {
    margin-bottom: var(--space-sm) !important;
}

.qm-mb-md {
    margin-bottom: var(--space-md) !important;
}

.qm-mb-lg {
    margin-bottom: var(--space-lg) !important;
}

.qm-mt-0 {
    margin-top: 0 !important;
}

.qm-mt-sm {
    margin-top: var(--space-sm) !important;
}

.qm-mt-md {
    margin-top: var(--space-md) !important;
}

.qm-mt-lg {
    margin-top: var(--space-lg) !important;
}

.qm-p-0 {
    padding: 0 !important;
}

.qm-p-sm {
    padding: var(--space-sm) !important;
}

.qm-p-md {
    padding: var(--space-md) !important;
}

.qm-p-lg {
    padding: var(--space-lg) !important;
}

.qm-hidden {
    display: none !important;
}

.qm-flex {
    display: flex !important;
}

.qm-items-center {
    align-items: center !important;
}

.qm-justify-between {
    justify-content: space-between !important;
}

.qm-gap-sm {
    gap: var(--space-sm) !important;
}

.qm-gap-md {
    gap: var(--space-md) !important;
}

.qm-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.qm-nowrap {
    white-space: nowrap;
}

/* ============================================
   13. Collapsible Section Component
   ============================================ */
.qm-collapsible {
    border-radius: var(--radius-lg);
    background: var(--brand-surface);
    box-shadow: 0 4px 15px var(--brand-shadow);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.qm-collapsible-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    background: linear-gradient(135deg, var(--brand-surface) 0%, var(--brand-background) 100%);
    border-bottom: 1px solid var(--brand-outline);
    transition: all var(--transition-normal);
}

.qm-collapsible-header:hover {
    background: var(--brand-background);
}

.qm-collapsible-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: 0;
}

.qm-collapsible-toggle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--brand-background);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    color: var(--brand-muted);
}

.qm-collapsible.collapsed .qm-collapsible-toggle {
    transform: rotate(-90deg);
}

.qm-collapsible-body {
    padding: var(--space-lg);
    animation: qm-slideDown 0.3s ease;
}

.qm-collapsible.collapsed .qm-collapsible-body {
    display: none;
}

/* ============================================
   14. Quick Stats Bar (Simplified KPI)
   ============================================ */
.qm-kpi-bar {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: 0 8px 24px var(--brand-shadow-lg);
    margin-bottom: var(--space-lg);
}

.qm-kpi-item {
    flex: 1;
    text-align: center;
    padding: var(--space-sm) 0;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.qm-kpi-item:last-child {
    border-right: none;
}

.qm-kpi-label {
    font-size: var(--font-size-xs);
    opacity: 0.85;
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.qm-kpi-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

@media (max-width: 768px) {
    .qm-kpi-bar {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .qm-kpi-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        padding: var(--space-sm);
    }

    .qm-kpi-item:last-child {
        border-bottom: none;
    }

    .qm-kpi-value {
        font-size: var(--font-size-xl);
    }
}