/* ========================================
  /* 热线统计看板 - UI/UX Pro Max 设计系统
   风格: Bento Grid + Data-Dense Dashboard
   配色: 蓝色数据 + 琥珀色高亮
   ======================================== */

:root {
    /* Primary Colors */
    --color-primary: #1E40AF;
    --color-primary-light: #3B82F6;
    --color-primary-dark: #1E3A8A;
    
    /* Secondary Colors */
    --color-secondary: #3B82F6;
    --color-accent: #F59E0B;
    --color-accent-light: #FBBF24;
    
    /* Background Colors */
    --color-bg: #F5F5F7;
    --color-bg-card: #FFFFFF;
    --color-bg-hover: #F1F5F9;
    
    /* Text Colors */
    --color-text: #1D1D1F;
    --color-text-secondary: #475569;
    --color-text-muted: #64748B;
    
    /* Border Colors */
    --color-border: #E2E8F0;
    --color-border-light: #F1F5F9;
    
    /* Status Colors */
    --color-success: #10B981;
    --color-success-bg: #D1FAE5;
    --color-info: #3B82F6;
    --color-info-bg: #DBEAFE;
    
    /* Typography */
    --font-sans: 'Fira Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'SF Mono', monospace;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-2xl: 32px;
    
    /* Border Radius - Bento Style */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-bento: 0 4px 6px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ========================================
   Header
   ======================================== */
.app-header {
    background: var(--color-bg-card);
    padding: var(--space-lg) var(--space-2xl);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--color-border-light);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.brand-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-md);
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.brand-tagline {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

/* ========================================
   Main Content & Bento Grid
   ======================================== */
.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--space-2xl);
}

/* Bento Grid Layout */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: minmax(180px, auto);
    gap: var(--space-lg);
}

/* Bento Cards */
.bento-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-bento);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
}

.bento-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Card Sizes */
.bento-card-large {
    grid-column: span 3;
    grid-row: span 2;
}

.bento-card-progress,
.bento-card-result {
    grid-column: span 1;
    grid-row: span 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bento-card-stats {
    grid-column: span 1;
    grid-row: span 1;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
}

.bento-card-full {
    grid-column: span 4;
    grid-row: span auto;
}

/* Card Header */
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ========================================
   Badges
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-info-bg);
    color: var(--color-info);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* ========================================
   Upload Zone
   ======================================== */
.upload-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, white 100%);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--color-primary-light);
    background: linear-gradient(135deg, #EFF6FF 0%, white 100%);
    box-shadow: var(--shadow-md);
}

.upload-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.upload-icon-large {
    width: 72px;
    height: 72px;
    background: var(--color-info-bg);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.upload-text-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.upload-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text);
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.upload-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-sm);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

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

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

.btn-cta {
    background: white;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
}

.btn-cta:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-primary-light);
}

.btn-text {
    background: transparent;
    color: var(--color-primary);
    padding: var(--space-xs) var(--space-sm);
}

.btn-text:hover {
    background: var(--color-info-bg);
}

.btn-download {
    padding: var(--space-md) var(--space-lg);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ========================================
   File List
   ======================================== */
.file-list-container {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.file-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.file-count {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.file-count strong {
    color: var(--color-primary);
    font-weight: 600;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-height: 200px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.file-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.file-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.file-icon {
    width: 40px;
    height: 40px;
    background: var(--color-info-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
}

.file-icon.pdf {
    background: #FEE2E2;
    color: #DC2626;
}

.file-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.file-size {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.file-remove {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.file-remove:hover {
    background: #FEE2E2;
    color: #DC2626;
}

/* ========================================
   Merge Action
   ======================================== */
.merge-action {
    margin-top: var(--space-lg);
    text-align: center;
}

/* ========================================
   Progress Ring
   ======================================== */
.progress-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.progress-ring {
    position: relative;
    width: 120px;
    height: 120px;
}

.progress-ring-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 8;
}

.progress-ring-fill {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset var(--transition-slow);
}

.progress-percentage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.progress-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-align: center;
}

/* ========================================
   Result Card
   ======================================== */
.result-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    text-align: center;
}

.result-icon {
    width: 64px;
    height: 64px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.result-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.result-info p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ========================================
   Stats Cards
   ======================================== */
.stat-card-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
}

.stat-card-secondary {
    background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
    color: white;
}

.stat-card-accent {
    background: linear-gradient(135deg, #10B981 0%, #34D399 100%);
    color: white;
}

.stat-card-info {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    color: white;
}

.stat-icon-bg {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.75rem;
    opacity: 0.9;
}

/* ========================================
   Statistics Section
   ======================================== */

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.filter-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-select,
.filter-input {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: var(--font-sans);
    background: white;
    color: var(--color-text);
    min-width: 160px;
    transition: all var(--transition-fast);
}

.filter-select:focus,
.filter-input:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.date-range {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.date-separator {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.filter-actions {
    display: flex;
    gap: var(--space-sm);
    margin-left: auto;
}

/* Stats Detail */
.stats-detail {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.detail-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.detail-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.detail-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
}

/* ========================================
   Spinner
   ======================================== */
.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ========================================
   Footer
   ======================================== */
.app-footer {
    padding: var(--space-lg);
    text-align: center;
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-border);
}

.app-footer p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .bento-card-large {
        grid-column: span 2;
    }
    
    .bento-card-progress,
    .bento-card-result {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .bento-card-stats {
        grid-column: span 1;
    }
    
    .bento-card-full {
        grid-column: span 2;
    }
    
    .stats-detail {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: var(--space-md);
    }
    
    .bento-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .bento-card-large,
    .bento-card-progress,
    .bento-card-result,
    .bento-card-stats,
    .bento-card-full {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .bento-card {
        padding: var(--space-md);
    }
    
    .stats-detail {
        grid-template-columns: 1fr;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-actions {
        margin-left: 0;
    }
    
    .date-range {
        flex-direction: column;
        align-items: stretch;
    }
    
    .upload-actions {
        flex-direction: column;
    }
    
    .upload-zone {
        padding: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .brand-text h1 {
        font-size: 1.125rem;
    }
    
    .brand-tagline {
        display: none;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .progress-ring {
        width: 100px;
        height: 100px;
    }
    
    .progress-percentage {
        font-size: 1.25rem;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.hidden {
    display: none !important;
}

[hidden] {
    display: none !important;
}