/* ==========================================
   Harvard Academic Enhancements
   数据可视化和特殊组件增强样式
   ========================================== */

/* === Calculator Modules === */
.calculator-modules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.calculator-card {
    background: var(--academic-paper);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-smooth);
    border: 2px solid transparent;
}

.calculator-card.primary {
    border-color: var(--harvard-crimson);
    background: linear-gradient(135deg, var(--academic-paper), #fdf2f2);
}

.calculator-card.secondary {
    border-color: var(--carbon-forest);
    background: linear-gradient(135deg, var(--academic-paper), #f0f9f0);
}

.calculator-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-floating);
}

.calculator-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.calculator-content h4 {
    font-size: 1.3rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 1rem;
    color: var(--academic-charcoal);
}

.calculator-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--academic-slate);
    margin-bottom: 1.5rem;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.feature-tags .tag {
    background: var(--academic-light-gray);
    color: var(--academic-charcoal);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
}

.calculator-card.primary .tag {
    background: var(--harvard-crimson);
    color: white;
}

.calculator-card.secondary .tag {
    background: var(--carbon-forest);
    color: white;
}

.calculator-btn {
    width: 100%;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.calculator-btn.primary {
    background: linear-gradient(135deg, var(--harvard-crimson), var(--harvard-crimson-dark));
    color: white;
}

.calculator-btn.secondary {
    background: linear-gradient(135deg, var(--carbon-forest), var(--carbon-sage));
    color: white;
}

.calculator-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.comparison-item {
    padding: 1rem;
    background: var(--academic-paper);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* === Harvard Enhanced Tables === */
.harvard-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-family-serif);
    margin: var(--golden-md) 0;
    background: var(--academic-paper);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.harvard-table th {
    background: var(--harvard-crimson);
    color: white;
    padding: var(--space-lg);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-small);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.harvard-table td {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--academic-light-gray);
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
}

.harvard-table tr:nth-child(even) {
    background: var(--academic-ivory);
}

.harvard-table tr:hover {
    background: var(--carbon-mint);
    transition: var(--transition-swift);
}

/* === Harvard Formula Display === */
.harvard-formula {
    background: var(--academic-paper);
    border: 2px solid var(--academic-light-gray);
    border-left: 6px solid var(--harvard-crimson);
    border-radius: var(--radius-lg);
    padding: var(--golden-md);
    margin: var(--golden-md) 0;
    font-family: var(--font-family-mono);
    text-align: center;
    position: relative;
}

.harvard-formula::before {
    content: "Formula";
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--academic-paper);
    padding: 0 var(--space-md);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-bold);
    color: var(--harvard-crimson);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.harvard-formula-main {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--academic-charcoal);
    margin-bottom: var(--space-md);
    letter-spacing: 0.02em;
}

.harvard-formula-description {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-small);
    color: var(--academic-slate);
    font-style: italic;
    margin-top: var(--space-sm);
}

.harvard-formula-variables {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-top: var(--golden-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--academic-light-gray);
}

.harvard-variable {
    text-align: left;
    font-family: var(--font-family-serif);
}

.harvard-variable-symbol {
    font-family: var(--font-family-mono);
    font-weight: var(--font-weight-bold);
    color: var(--harvard-crimson);
    font-size: var(--font-size-lg);
    margin-right: var(--space-sm);
}

.harvard-variable-definition {
    font-size: var(--font-size-small);
    color: var(--academic-charcoal);
    line-height: var(--line-height-normal);
}

/* === Harvard Enhanced Progress Bars === */
.harvard-progress-container {
    background: var(--academic-light-gray);
    height: 24px;
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
    margin: var(--space-md) 0;
    box-shadow: var(--shadow-inset);
}

.harvard-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--harvard-crimson), var(--carbon-forest));
    border-radius: var(--radius-full);
    transition: width var(--transition-elegant);
    position: relative;
    overflow: hidden;
}

.harvard-progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255,255,255,0.2) 50%, 
        transparent 100%);
    animation: shimmer 2s infinite;
}

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

.harvard-progress-label {
    position: absolute;
    top: 50%;
    right: var(--space-md);
    transform: translateY(-50%);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-bold);
    color: var(--academic-charcoal);
    text-shadow: 0 1px 2px rgba(255,255,255,0.8);
}

/* === Harvard Callout Boxes === */
.harvard-callout {
    margin: var(--golden-md) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.harvard-callout-info {
    background: linear-gradient(135deg, #EBF8FF, #BEE3F8);
    border-left: 6px solid var(--info-academic);
}

.harvard-callout-success {
    background: linear-gradient(135deg, var(--carbon-mint), #C6F6D5);
    border-left: 6px solid var(--success-academic);
}

.harvard-callout-warning {
    background: linear-gradient(135deg, #FFFBEB, #FED7AA);
    border-left: 6px solid var(--warning-academic);
}

.harvard-callout-error {
    background: linear-gradient(135deg, #FEF2F2, #FECACA);
    border-left: 6px solid var(--error-academic);
}

.harvard-callout-header {
    padding: var(--space-lg) var(--golden-md) var(--space-md) var(--golden-md);
    border-bottom: 1px solid rgba(255,255,255,0.5);
}

.harvard-callout-title {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-h5);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    color: var(--academic-charcoal);
}

.harvard-callout-content {
    padding: var(--space-md) var(--golden-md) var(--space-lg) var(--golden-md);
    font-family: var(--font-family-serif);
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
    color: var(--academic-charcoal);
}

/* === Harvard Timeline === */
.harvard-timeline {
    position: relative;
    padding: var(--golden-md) 0;
}

.harvard-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--harvard-crimson), var(--carbon-forest));
    border-radius: var(--radius-sm);
}

.harvard-timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--golden-lg);
}

.harvard-timeline-marker {
    position: absolute;
    left: 15px;
    top: 0;
    width: 30px;
    height: 30px;
    background: var(--harvard-crimson);
    border: 4px solid var(--academic-paper);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-card);
}

.harvard-timeline-marker::after {
    content: '';
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.harvard-timeline-content {
    background: var(--academic-paper);
    padding: var(--golden-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--academic-light-gray);
    position: relative;
}

.harvard-timeline-content::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 15px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 12px 8px 0;
    border-color: transparent var(--academic-paper) transparent transparent;
}

.harvard-timeline-title {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-h5);
    font-weight: var(--font-weight-semibold);
    color: var(--harvard-crimson);
    margin: 0 0 var(--space-sm) 0;
}

.harvard-timeline-date {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-bold);
    color: var(--academic-silver);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.harvard-timeline-description {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
    color: var(--academic-charcoal);
    margin: 0;
}

/* === Harvard Quote Block === */
.harvard-quote {
    background: var(--academic-paper);
    border-left: 6px solid var(--harvard-crimson);
    border-radius: var(--radius-lg);
    padding: var(--golden-lg);
    margin: var(--golden-lg) 0;
    position: relative;
    box-shadow: var(--shadow-card);
}

.harvard-quote::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 6rem;
    color: var(--harvard-crimson);
    font-family: var(--font-family-serif);
    line-height: 1;
    opacity: 0.3;
}

.harvard-quote-text {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-lg);
    font-style: italic;
    line-height: var(--line-height-loose);
    color: var(--academic-charcoal);
    margin: 0 0 var(--space-lg) 0;
    position: relative;
    z-index: 1;
}

.harvard-quote-author {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    color: var(--harvard-crimson);
    text-align: right;
    margin: 0;
}

.harvard-quote-source {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-small);
    color: var(--academic-slate);
    text-align: right;
    margin: var(--space-xs) 0 0 0;
    font-style: italic;
}

/* === Harvard Badge System === */
.harvard-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 var(--space-xs) var(--space-xs) 0;
}

.harvard-badge-primary {
    background: var(--harvard-crimson);
    color: white;
}

.harvard-badge-secondary {
    background: var(--carbon-forest);
    color: white;
}

.harvard-badge-success {
    background: var(--success-academic);
    color: white;
}

.harvard-badge-warning {
    background: var(--warning-academic);
    color: white;
}

.harvard-badge-info {
    background: var(--info-academic);
    color: white;
}

.harvard-badge-outline {
    background: transparent;
    border: 2px solid var(--harvard-crimson);
    color: var(--harvard-crimson);
}

/* === Harvard Responsive Enhancements === */
@media (max-width: 768px) {
    .harvard-formula-variables {
        grid-template-columns: 1fr;
    }
    
    .harvard-timeline-item {
        padding-left: 60px;
    }
    
    .harvard-timeline::before {
        left: 20px;
    }
    
    .harvard-timeline-marker {
        left: 5px;
        width: 20px;
        height: 20px;
    }
    
    .harvard-timeline-content::before {
        left: -8px;
        border-width: 6px 8px 6px 0;
    }
    
    .harvard-quote::before {
        font-size: 3rem;
        top: -10px;
        left: 10px;
    }
}

/* === Harvard Print Enhancements === */
@media print {
    .harvard-progress-bar::after {
        display: none;
    }
    
    .harvard-callout {
        border: 2px solid var(--academic-charcoal);
        box-shadow: none;
    }
    
    .harvard-timeline::before {
        background: var(--academic-charcoal);
    }
    
    .harvard-timeline-marker {
        background: var(--academic-charcoal);
        border-color: white;
    }
}

/* === Harvard Animation Classes === */
.harvard-fade-in {
    animation: harvardFadeIn var(--transition-elegant);
}

.harvard-slide-up {
    animation: harvardSlideUp var(--transition-smooth);
}

.harvard-scale-in {
    animation: harvardScaleIn var(--transition-swift);
}

@keyframes harvardFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes harvardSlideUp {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

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