/* Stereographic Projection Simulator Styles */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #eaeaea;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

header h1 {
    font-size: 2.5em;
    color: #64ffda;
    margin-bottom: 10px;
    text-shadow: 0 0 20px rgba(100, 255, 218, 0.3);
}

.subtitle {
    font-size: 1.1em;
    color: #8892b0;
    font-style: italic;
}

/* Main Content */
main {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Canvas Container */
.canvas-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.canvas-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.canvas-wrapper h2 {
    color: #64ffda;
    font-size: 1.3em;
    margin-bottom: 10px;
}

canvas {
    border: 2px solid rgba(100, 255, 218, 0.3);
    border-radius: 8px;
    background: #0a192f;
    cursor: crosshair;
    box-shadow: 0 0 30px rgba(100, 255, 218, 0.1);
    transition: border-color 0.3s, box-shadow 0.3s;
}

canvas:hover {
    border-color: rgba(100, 255, 218, 0.6);
    box-shadow: 0 0 40px rgba(100, 255, 218, 0.2);
}

.canvas-info {
    text-align: center;
    font-size: 0.9em;
    color: #8892b0;
}

.info-label {
    background: rgba(100, 255, 218, 0.1);
    padding: 5px 10px;
    border-radius: 4px;
}

/* Projection Info */
.projection-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.projection-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, transparent, #64ffda, transparent);
}

.projection-arrow {
    font-size: 2em;
    color: #64ffda;
    text-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
}

/* Controls Panel */
.controls-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.control-section {
    background: rgba(255, 255, 255, 0.02);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.control-section h3 {
    color: #64ffda;
    font-size: 1.1em;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(100, 255, 218, 0.2);
}

.control-group {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.control-group label {
    flex: 1;
    font-size: 0.9em;
    color: #ccd6f6;
}

.control-group input[type="range"] {
    flex: 2;
    height: 6px;
    -webkit-appearance: none;
    background: rgba(100, 255, 218, 0.2);
    border-radius: 3px;
    outline: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: #64ffda;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: #64ffda;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
}

.control-group span {
    min-width: 50px;
    text-align: right;
    font-family: monospace;
    color: #64ffda;
}

.control-group select {
    flex: 2;
    padding: 6px 10px;
    background: rgba(10, 25, 47, 0.8);
    border: 1px solid rgba(100, 255, 218, 0.3);
    border-radius: 4px;
    color: #ccd6f6;
    cursor: pointer;
}

.control-group select:focus {
    outline: none;
    border-color: #64ffda;
}

.control-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #64ffda;
}

/* Buttons */
.btn {
    width: 100%;
    padding: 10px 15px;
    background: linear-gradient(135deg, rgba(100, 255, 218, 0.1), rgba(100, 255, 218, 0.05));
    border: 1px solid rgba(100, 255, 218, 0.3);
    border-radius: 6px;
    color: #64ffda;
    font-size: 0.9em;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 8px;
}

.btn:hover {
    background: linear-gradient(135deg, rgba(100, 255, 218, 0.2), rgba(100, 255, 218, 0.1));
    border-color: #64ffda;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 255, 218, 0.2);
}

.btn:active {
    transform: translateY(0);
}

/* Info Panel */
.info-panel {
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.info-panel h3 {
    color: #64ffda;
    font-size: 1.3em;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(100, 255, 218, 0.2);
}

.info-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.info-content h4 {
    color: #8892b0;
    font-size: 1.1em;
    margin-bottom: 8px;
    margin-top: 15px;
}

.info-content h4:first-child {
    margin-top: 0;
}

.info-content p {
    color: #ccd6f6;
    margin-bottom: 10px;
    line-height: 1.6;
}

.info-content ul {
    list-style: none;
    padding-left: 0;
}

.info-content li {
    color: #ccd6f6;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.info-content li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: #64ffda;
}

.formula {
    background: rgba(10, 25, 47, 0.5);
    padding: 15px;
    border-radius: 6px;
    border-left: 3px solid #64ffda;
    font-family: 'Courier New', monospace;
    font-size: 0.95em;
    color: #64ffda;
    margin: 10px 0;
    line-height: 1.8;
}

.point-info {
    background: rgba(100, 255, 218, 0.05);
    padding: 12px;
    border-radius: 6px;
    border: 1px solid rgba(100, 255, 218, 0.2);
    font-family: monospace;
}

.point-info p {
    margin: 5px 0;
    color: #64ffda;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 30px;
    color: #8892b0;
    font-size: 0.9em;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .canvas-container {
        flex-direction: column;
    }

    .projection-info {
        flex-direction: row;
    }

    .projection-line {
        width: 30px;
        height: 2px;
        background: linear-gradient(to right, transparent, #64ffda, transparent);
    }

    .projection-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    .controls-panel {
        grid-template-columns: 1fr;
    }

    .info-content {
        grid-template-columns: 1fr;
    }

    canvas {
        max-width: 100%;
        height: auto;
    }
}

/* Animations */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(100, 255, 218, 0.1);
    }
    50% {
        box-shadow: 0 0 30px rgba(100, 255, 218, 0.2);
    }
}

canvas {
    animation: glow 3s ease-in-out infinite;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(10, 25, 47, 0.5);
}

::-webkit-scrollbar-thumb {
    background: rgba(100, 255, 218, 0.3);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 255, 218, 0.5);
}