:root {
    --primary-black: #0a0a0a;
    --secondary-black: #1a1a1a;
    --accent-blue: #2563eb;
    --accent-blue-light: #3b82f6;
    --accent-blue-dark: #1d4ed8;
    --text-white: #f8fafc;
    --text-gray: #cbd5e1;
    --border-dark: #374151;
    --shadow-blue: rgba(37, 99, 235, 0.2);
    
    --math-green: #10b981;
    --math-orange: #f59e0b;
    --math-purple: #8b5cf6;
    --math-red: #ef4444;
    --math-yellow: #eab308;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-black);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.math-topbar {
    background-color: var(--secondary-black);
    border-bottom: 2px solid var(--accent-blue);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.math-topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.math-title {
    color: var(--text-white);
    font-weight: 700;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.math-title::before {
    content: "🧮";
    font-size: 1.2rem;
}

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

.btn-math {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.95rem;
    background-color: transparent;
    color: var(--text-white);
    border: 2px solid var(--border-dark);
    text-decoration: none;
}

.btn-math:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue-light);
}

.btn-math.primary {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

.btn-math.primary:hover {
    background-color: var(--accent-blue-dark);
    border-color: var(--accent-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-blue);
}

.btn-math.active {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.btn-math.calculator {
    background-color: var(--math-green);
    border-color: var(--math-green);
}

.btn-math.calculator:hover {
    background-color: #0da271;
    border-color: #0da271;
}

.math-layout {
    padding: 1.5rem 0;
}

.math-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 900px) {
    .math-grid {
        grid-template-columns: 1fr;
    }
}

.math-panel {
    background-color: var(--secondary-black);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.35);
}

.math-panel h2,
.math-panel h3 {
    color: var(--text-white);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.math-panel h2 {
    font-size: 1.5rem;
    border-bottom: 2px solid var(--accent-blue);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.math-panel p {
    color: var(--text-gray);
    margin-bottom: 1rem;
}

.math-panel ul,
.math-panel ol {
    color: var(--text-gray);
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.math-panel li {
    margin-bottom: 0.5rem;
}

.math-panel pre {
    background-color: var(--primary-black);
    border: 1px solid var(--border-dark);
    border-radius: 10px;
    padding: 1rem;
    overflow: auto;
    margin: 1rem 0;
}

.math-panel code {
    color: var(--math-green);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    background-color: rgba(16, 185, 129, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

.math-calculator-container {
    position: relative;
    margin-top: 0.75rem;
    border-radius: 12px;
    border: 2px solid var(--border-dark);
    background-color: var(--primary-black);
    overflow: hidden;
    min-height: 400px;
}

#mathCanvas {
    width: 100%;
    height: 100%;
    display: block;
    background-color: var(--primary-black);
    border-radius: 10px;
}

.math-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(26, 26, 26, 0.8);
    border-radius: 10px;
    border: 1px solid var(--border-dark);
}

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

.control-group label {
    color: var(--text-white);
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group label::before {
    content: "🔢";
    font-size: 0.8rem;
    opacity: 0.7;
}

.math-param {
    padding: 0.75rem;
    background-color: var(--primary-black);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    color: var(--text-white);
    font-size: 1rem;
    transition: all 0.3s;
}

.math-param:focus {
    outline: none;
    border-color: var(--math-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.math-param:hover {
    border-color: var(--accent-blue);
}

.math-params-panel {
    margin-top: 1rem;
}

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

.param-card {
    background-color: rgba(26, 26, 26, 0.8);
    border: 1px solid var(--border-dark);
    border-radius: 10px;
    padding: 1rem;
    transition: all 0.3s;
}

.param-card:hover {
    border-color: var(--math-purple);
    transform: translateY(-2px);
}

.param-card h4 {
    color: var(--text-white);
    margin-bottom: 0.5rem;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.param-card h4::before {
    content: "📐";
    font-size: 0.9rem;
}

.param-card p {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.graph-container {
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(26, 26, 26, 0.8);
    border-radius: 10px;
    border: 1px solid var(--border-dark);
}

.graph-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.graph-container h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-white);
}

.graph-canvas {
    width: 100%;
    height: 200px;
    background-color: var(--primary-black);
    border-radius: 8px;
    border: 1px solid var(--border-dark);
}

.math-output {
    margin-top: 0.75rem;
    background-color: var(--primary-black);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 1.25rem;
    min-height: 120px;
    white-space: pre-wrap;
    color: var(--text-white);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

.math-output.success {
    border-color: var(--math-green);
    background-color: rgba(16, 185, 129, 0.05);
}

.math-output.error {
    border-color: var(--math-red);
    background-color: rgba(239, 68, 68, 0.05);
}

.math-indicators {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: rgba(26, 26, 26, 0.8);
    border-radius: 8px;
    border: 1px solid var(--border-dark);
}

.indicator-icon {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.indicator-icon.calculating {
    background-color: var(--math-green);
    animation: pulse 1.5s infinite;
}

.indicator-icon.paused {
    background-color: var(--math-orange);
}

.indicator-icon.stopped {
    background-color: var(--math-red);
}

.indicator-label {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.indicator-value {
    color: var(--text-white);
    font-weight: 600;
    font-size: 0.9rem;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.math-legend {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-gray);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.legend-color.blue {
    background-color: var(--accent-blue);
}

.legend-color.green {
    background-color: var(--math-green);
}

.legend-color.orange {
    background-color: var(--math-orange);
}

.legend-color.purple {
    background-color: var(--math-purple);
}

.legend-color.red {
    background-color: var(--math-red);
}

@media (max-width: 768px) {
    .math-grid {
        gap: 1rem;
    }
    
    .math-panel {
        padding: 1rem;
    }
    
    .math-calculator-container {
        min-height: 300px;
    }
    
    .math-controls {
        grid-template-columns: 1fr;
    }
    
    .params-grid {
        grid-template-columns: 1fr;
    }
    
    .math-indicators {
        flex-direction: column;
    }
}

.formula {
    background-color: rgba(26, 26, 26, 0.8);
    border-left: 4px solid var(--accent-blue);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0 8px 8px 0;
    font-family: "Times New Roman", serif;
}

.formula .symbol {
    color: var(--math-green);
    font-weight: bold;
}

.formula .variable {
    color: var(--math-purple);
    font-style: italic;
}

.formula .constant {
    color: var(--math-orange);
}

@keyframes calculate {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.calculating {
    animation: calculate 0.5s ease-in-out;
}

/* Специфичные для математики стили */
.geometry-figure {
    background-color: rgba(37, 99, 235, 0.1);
    border: 1px solid var(--accent-blue);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 8px;
}

.equation {
    font-size: 1.2rem;
    padding: 0.5rem 1rem;
    background-color: rgba(26, 26, 26, 0.8);
    border-radius: 6px;
    margin: 0.5rem 0;
    font-family: "Cambria Math", serif;
}

.coordinate-system {
    background-color: var(--primary-black);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.math-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.math-table th,
.math-table td {
    border: 1px solid var(--border-dark);
    padding: 0.75rem;
    text-align: center;
}

.math-table th {
    background-color: var(--secondary-black);
    color: var(--text-white);
    font-weight: 600;
}

.math-table td {
    color: var(--text-gray);
}

.math-table tr:hover {
    background-color: rgba(37, 99, 235, 0.1);
}