* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

header {
    text-align: center;
    padding: 2rem 1rem;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}

header nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

header nav a:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem 2rem;
}

.hidden {
    display: none !important;
}

/* Top Tables Section */
.top-tables {
    background: white;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
}

.table-tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.table-tab {
    flex: 1;
    padding: 1rem 2rem;
    border: none;
    background: transparent;
    font-size: 1.1rem;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.table-tab:hover {
    background: #e9ecef;
    color: #333;
}

.table-tab.active {
    background: white;
    color: #667eea;
    border-bottom-color: #667eea;
}

.table-container {
    padding: 2rem;
}

.table-container.hidden {
    display: none;
}

/* Calculator Redesign */
.calculator {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.calculator h3 {
    margin-bottom: 1rem;
    color: #333;
    font-size: 1.2rem;
    text-align: center;
}

.calc-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: start;
}

.input-group {
    margin-bottom: 0.8rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: #555;
    font-size: 0.9rem;
}

.token-text {
    margin-top: 0.3rem;
    font-size: 0.85rem;
    color: #666;
}

.token-text strong {
    color: #333;
}

textarea {
    width: 100%;
    padding: 0.6rem;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    font-size: 0.9rem;
    resize: vertical;
    min-height: 80px;
    transition: border-color 0.3s;
}

textarea:focus {
    outline: none;
    border-color: #667eea;
}

.token-info {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.8rem;
    padding: 0.8rem;
    background: white;
    border-radius: 6px;
    border: 1px solid #e1e5e9;
}

.token-info span {
    font-size: 0.9rem;
    color: #666;
}

.token-info strong {
    color: #333;
    font-size: 1.1rem;
}

/* Pricing Filters */
.pricing-filters {
    margin-bottom: 2rem;
}

.provider-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tab-button {
    padding: 0.75rem 1.5rem;
    border: 2px solid #e1e5e9;
    background: white;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #666;
}

.tab-button[data-provider="aws"] {
    border-color: #ff9900;
}

.tab-button[data-provider="azure"] {
    border-color: #0078d4;
}

.tab-button[data-provider="openai"] {
    border-color: #10a37f;
}

.tab-button[data-provider="anthropic"] {
    border-color: #d97706;
}

.tab-button[data-provider="gcp"] {
    border-color: #4285f4;
}

.tab-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.tab-button.active {
    background: #667eea;
    border-color: #667eea;
    color: white;
}

.tab-button[data-provider="aws"].active {
    background: #ff9900;
    border-color: #ff9900;
}

.tab-button[data-provider="azure"].active {
    background: #0078d4;
    border-color: #0078d4;
}

.tab-button[data-provider="openai"].active {
    background: #10a37f;
    border-color: #10a37f;
}

.tab-button[data-provider="anthropic"].active {
    background: #d97706;
    border-color: #d97706;
}

.tab-button[data-provider="gcp"].active {
    background: #4285f4;
    border-color: #4285f4;
}

.models-periodic {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    max-width: 100%;
    margin: 0 auto;
    padding: 1rem;
    max-height: 60vh;
    overflow-y: auto;
    border: 1px solid #e1e5e9;
    border-radius: 12px;
    background: #fafbfc;
}

.model-element {
    background: white;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.element-symbol {
    font-size: 1.4rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.5rem;
}

.element-name-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.element-name-link:hover .element-name {
    color: #667eea;
    text-decoration: underline;
}

.element-name {
    font-size: 0.9rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.4rem;
    line-height: 1.2;
    height: auto;
    min-height: 2.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: color 0.2s ease;
}

.lowest-price {
    background: #d4edda;
    color: #155724;
    font-weight: 700;
    border-radius: 6px;
    padding: 0.15rem 0.3rem;
    font-size: 0.8rem;
}

.highest-price {
    background: #f8d7da;
    color: #721c24;
    font-weight: 700;
    border-radius: 6px;
    padding: 0.15rem 0.3rem;
    font-size: 0.8rem;
}

.element-provider {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 0.6rem;
    font-weight: 500;
}

.element-specs {
    margin: 0.6rem 0;
    flex-grow: 1;
}

.spec-line {
    font-size: 0.8rem;
    color: #555;
    margin-bottom: 0.3rem;
    line-height: 1.3;
    font-weight: 500;
}

.element-cost {
    background: #f8f9fa;
    padding: 0.6rem;
    border-radius: 8px;
    margin-top: auto;
    border: 1px solid #e9ecef;
}

.cost-label {
    font-size: 0.75rem;
    color: #666;
    margin-bottom: 0.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cost-amount {
    font-size: 1rem;
    font-weight: 700;
    color: #667eea;
}

/* Mind Map Styles */
.mindmap-container {
    width: 100%;
    height: 1200px;
    position: relative;
    background: radial-gradient(circle at 30% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(16, 163, 127, 0.1) 0%, transparent 50%),
                linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

#services-mindmap {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.mindmap-node {
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mindmap-node:hover {
    transform: scale(1.08);
    filter: drop-shadow(0 8px 16px rgba(0,0,0,0.2));
}

.mindmap-central {
    fill: url(#centralGradient);
    stroke: #4c51bf;
    stroke-width: 4;
    filter: drop-shadow(0 6px 12px rgba(76, 81, 191, 0.3));
}

.mindmap-branch {
    fill: url(#branchGradient);
    stroke: url(#strokeGradient);
    stroke-width: 3;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
}

.mindmap-leaf {
    fill: url(#leafGradient);
    stroke: #cbd5e0;
    stroke-width: 2;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.mindmap-text {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 700;
    text-anchor: middle;
    dominant-baseline: middle;
    pointer-events: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.mindmap-text.central {
    font-size: 18px;
    fill: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.mindmap-text.branch {
    font-size: 15px;
    fill: #2d3748;
    font-weight: 600;
}

.mindmap-text.leaf {
    font-size: 13px;
    fill: #4a5568;
    font-weight: 500;
}

.mindmap-line {
    stroke: url(#lineGradient);
    stroke-width: 3;
    fill: none;
    stroke-linecap: round;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.mindmap-connection {
    stroke: url(#connectionGradient);
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    opacity: 0.8;
}

.provider-aws { 
    fill: url(#awsGradient);
    stroke: #e68900;
}
.provider-azure { 
    fill: url(#azureGradient);
    stroke: #106ebe;
}
.provider-gcp { 
    fill: url(#gcpGradient);
    stroke: #3367d6;
}
.provider-openai { 
    fill: url(#openaiGradient);
    stroke: #0d8f72;
}
.provider-anthropic { 
    fill: url(#anthropicGradient);
    stroke: #c2680a;
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

.mindmap-central {
    animation: pulse 3s ease-in-out infinite;
}

.mindmap-branch {
    animation: float 4s ease-in-out infinite;
}

.mindmap-leaf {
    animation: float 5s ease-in-out infinite;
}

/* Hover effects */
.mindmap-node:hover .mindmap-text {
    font-weight: 800;
}

.mindmap-node:hover .mindmap-branch,
.mindmap-node:hover .mindmap-leaf {
    stroke-width: 4;
}

.model-element:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.model-element.featured {
    border-color: #667eea;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.2);
}

.model-element.openai { border-left: 4px solid #10a37f; }
.model-element.anthropic { border-left: 4px solid #d97706; }
.model-element.aws { border-left: 4px solid #ff9900; }
.model-element.azure { border-left: 4px solid #0078d4; }
.model-element.gcp { border-left: 4px solid #4285f4; }

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}



.official-sources {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.official-sources h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.source-link {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    color: white;
    font-weight: 600;
    text-align: center;
    transition: transform 0.2s, opacity 0.2s;
}

.source-link:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.source-link.openai { background: #10a37f; }
.source-link.anthropic { background: #d97706; }
.source-link.aws { background: #ff9900; }
.source-link.azure { background: #0078d4; }
.source-link.gcp { background: #4285f4; }

.update-note {
    font-size: 0.9rem;
    opacity: 0.8;
    font-style: italic;
}

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

.footer-credits {
    text-align: center;
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.2);
    margin-top: 1rem;
}

.footer-credits p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-credits a {
    color: white;
    text-decoration: none;
}

.pricing-filters {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.provider-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.download-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-link {
    color: #667eea;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.download-link:hover {
    color: #5a6fd8;
    text-decoration: underline;
}

.separator {
    color: #ccc;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .calc-inputs {
        grid-template-columns: 1fr;
    }
    
    .table-tab {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
    
    .mindmap-container {
        height: 400px;
    }
    
    .token-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .models-grid {
        grid-template-columns: 1fr;
    }
    
    .provider-tabs {
        gap: 0.3rem;
    }
    
    .tab-button {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
    
    .mindmap-text.central {
        font-size: 14px;
    }
    
    .mindmap-text.branch {
        font-size: 12px;
    }
    
    .mindmap-text.leaf {
        font-size: 10px;
    }
    
    .table-container {
        padding: 1rem;
    }
}
/* Token info tooltip styles */
.info-icon {
    cursor: pointer;
    font-size: 12px;
    margin-left: 4px;
    background: #4CAF50;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-weight: bold;
    vertical-align: super;
    position: relative;
    top: -8px;
    left: -2px;
}

.info-icon:hover {
    background: #45a049;
    transform: scale(1.1);
}

.token-info-tooltip {
    display: none;
    position: absolute;
    background: #333;
    color: white;
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
    max-width: 300px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    line-height: 1.4;
    top: 40px;
    left: 0;
}

.token-info-tooltip strong {
    color: #4CAF50;
}

.calculator {
    position: relative;
}
/* Calculator header styles */
.calculator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.pricing-updated {
    font-size: 11px;
    color: #666;
    opacity: 0.8;
    font-weight: normal;
}

.pricing-updated time {
    color: #4CAF50;
}

/* Tokenization Info Section */
.tokenization-info {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    color: white;
}

.info-header {
    cursor: pointer;
    user-select: none;
}

.info-header h3 {
    margin: 0;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.expand-icon {
    transition: transform 0.3s ease;
    font-size: 14px;
}

.info-header.expanded .expand-icon {
    transform: rotate(180deg);
}

.subtitle {
    margin: 5px 0 0 0;
    opacity: 0.9;
    font-size: 14px;
}

.info-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.info-content.expanded {
    max-height: 600px;
    margin-top: 20px;
}

.provider-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.provider-card {
    background: white;
    border-radius: 8px;
    padding: 15px;
    color: #333;
    transition: transform 0.2s ease;
}

.provider-card:hover {
    transform: translateY(-5px);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.provider-icon {
    font-size: 24px;
}

.card-header h4 {
    margin: 0;
    font-size: 16px;
}

.card-body {
    font-size: 13px;
}

.method {
    font-weight: bold;
    color: #4CAF50;
    margin: 5px 0;
}

.encoding {
    color: #666;
    margin: 5px 0;
    font-size: 12px;
}

.accuracy-badge {
    display: inline-block;
    background: #4CAF50;
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: bold;
    margin-top: 8px;
}

.info-note {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #FFD700;
}

.info-note strong {
    color: #FFD700;
}

@media (max-width: 768px) {
    .provider-cards {
        grid-template-columns: 1fr;
    }
}

/* Icons8 provider images */
.provider-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.footer-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
    transition: transform 0.2s ease;
}

.footer-icon:hover {
    transform: scale(1.15);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.source-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: white;
    border-radius: 8px;
    text-decoration: none;
    color: #333;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid #e0e0e0;
}

.source-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-color: #4CAF50;
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 15px;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    /* Tokenization cards - stack vertically */
    .provider-cards {
        grid-template-columns: 1fr !important;
    }
    
    /* Footer sources - stack vertically */
    .sources-grid {
        grid-template-columns: 1fr !important;
    }
    
    /* Calculator header - stack on mobile */
    .calculator-header {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 10px;
    }
    
    .pricing-updated {
        font-size: 10px;
    }
    
    /* Tokenization info */
    .info-header h3 {
        font-size: 16px;
    }
    
    .subtitle {
        font-size: 12px;
    }
    
    /* Provider cards - better mobile spacing */
    .provider-card {
        padding: 12px;
    }
    
    .card-header {
        flex-direction: column;
        text-align: center;
    }
    
    /* Footer links - full width on mobile */
    .source-link {
        padding: 10px 15px;
        font-size: 13px;
    }
    
    /* Model cards grid */
    .models-periodic {
        grid-template-columns: 1fr !important;
    }
    
    /* Provider tabs - wrap on mobile */
    .provider-tabs {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .tab-button {
        font-size: 12px;
        padding: 8px 12px;
    }
}

@media (max-width: 480px) {
    /* Extra small devices */
    .provider-icon {
        width: 32px;
        height: 32px;
    }
    
    .footer-icon {
        width: 20px;
        height: 20px;
    }
    
    .info-header h3 {
        font-size: 14px;
    }
    
    .source-link {
        font-size: 12px;
        padding: 8px 12px;
    }
}