.converter-page {
    padding: 2rem 0;
}

.converter-intro {
    margin-bottom: 3rem;
}

.converter-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.converter-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.converter-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.meta-chip {
    background: var(--primary-light);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

.converter-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.converter-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.status-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--primary);
}

.status-bar svg {
    flex-shrink: 0;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    color: var(--text-main);
    font-size: 0.875rem;
}

.label-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip-trigger {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    cursor: help;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--text-main);
    color: var(--surface);
    text-align: center;
    border-radius: var(--radius-md);
    padding: 0.5rem;
    position: absolute;
    z-index: 1000;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.75rem;
    font-weight: normal;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

.converter-textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    
    font-size: 0.9375rem;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s;
}

.converter-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-shadow);
}

.converter-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    background: var(--surface);
    cursor: pointer;
    transition: border-color 0.2s;
}

.converter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-shadow);
}

.form-actions-inline {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.ghost-btn {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.ghost-btn:hover {
    background: var(--surface-muted);
    border-color: var(--primary);
    color: var(--primary);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9375rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.results-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.results-header {
    margin-bottom: 1.5rem;
}

.results-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 0;
}

.output-wrapper {
    margin-bottom: 1rem;
}

.output-textarea {
    background: var(--surface-muted);
    cursor: text;
}

.input-info, .output-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.copy-buttons-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.copy-buttons-row .copy-button {
    flex: 1 1 auto;
    min-width: 140px;
}

.copy-button {
    background: #f1f5f9;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #405063 !important;
    border: 1px solid #dde3e7;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    gap: 0.5rem;
}

.copy-button:hover {
    background: #e2e8f0;
    border-color: #94a3b8;
    transform: translateY(-1px);
}

.copy-button.copied {
    background: #10b981;
    border-color: #10b981;
    color: #ffffff !important;
}

.copy-button i {
    font-size: 16px;
}

.share-container {
    margin-top: 1.5rem;
}

.share-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.share-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 0.75rem;
    border-radius: 0.75rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    color: #ffffff;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 20px rgba(15, 23, 42, 0.2);
    color: #ffffff;
}

.share-x {
    background: #111827;
}

.share-facebook {
    background: #1877f2;
}

.share-linkedin {
    background: #0a66c2;
}

.share-reddit {
    background: #ff4500;
}

.share-telegram {
    background: #229ed9;
}

.share-whatsapp {
    background: #25d366;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.text-muted {
    color: var(--text-muted);
}

.angle-seo-section {
    padding: 4rem 0;
    background: var(--background);
}

.angle-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}

.angle-education-card h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.angle-education-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-main);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.angle-education-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.angle-education-card a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.angle-education-card a:hover {
    text-decoration: underline;
}

.infographic-timeline {
    margin: 3rem 0;
    padding: 2.5rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, rgba(14, 165, 233, 0.03) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.infographic-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.infographic-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--radius-full);
}

.timeline-container {
    position: relative;
    padding: 2rem 0;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 32px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--radius-full);
    z-index: 0;
}

.timeline-items {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    position: relative;
    z-index: 1;
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    position: relative;
    padding: 1.5rem;
    background: var(--surface);
    border-radius: var(--radius-md);
    border: 2px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    margin-left: 0;
}

.timeline-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.02) 0%, rgba(14, 165, 233, 0.02) 100%);
}

.timeline-item::before {
    display: none;
}

.timeline-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    position: relative;
    border: 4px solid var(--surface);
}

.timeline-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 100%);
    top: 0;
    left: 0;
}

.timeline-icon svg {
    width: 28px;
    height: 28px;
    stroke-width: 2;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.timeline-content {
    flex: 1;
    padding-top: 0.5rem;
}

.timeline-era {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.timeline-years {
    display: inline-block;
    font-size: 0.875rem;
    color: white;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    font-weight: 600;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.timeline-description {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.infographic-conversion-formula {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.formula-box {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
}

.formula-label {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.formula-content {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.75rem;
}

.formula-example {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .converter-title {
        font-size: 2rem;
    }
    
    .converter-card, .results-container {
        padding: 1.5rem;
    }
    
    .angle-card {
        padding: 2rem 1.5rem;
    }
    
    .infographic-conversion-formula {
        grid-template-columns: 1fr;
    }
    
    .share-buttons {
        justify-content: center;
    }
    
    .infographic-timeline {
        padding: 1.5rem;
    }
    
    .timeline-container::before {
        left: 28px;
    }
    
    .timeline-item {
        padding: 1.25rem;
        gap: 1rem;
    }
    
    .timeline-item:hover {
        transform: translateX(4px);
    }
    
    .timeline-icon {
        width: 56px;
        height: 56px;
    }
    
    .timeline-icon svg {
        width: 24px;
        height: 24px;
    }
    
    .timeline-era {
        font-size: 1.125rem;
    }
    
    .timeline-description {
        font-size: 0.875rem;
    }
}