/* Bézier Curves Visualization - Scoped Styles */

.bezier-curves-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    min-height: 100vh;
    color: #ecf0f1;
}

.bezier-curves-container header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.bezier-curves-container h1 {
    font-size: 2.5em;
    margin: 0 0 10px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bezier-curves-container .subtitle {
    font-size: 1.1em;
    color: #bdc3c7;
    margin: 0;
}

.bezier-curves-container main {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 20px;
    margin-bottom: 30px;
}

.bezier-curves-container .canvas-wrapper {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.bezier-curves-container #bezierCanvas {
    width: 100%;
    height: 600px;
    background: #0f0f1e;
    border-radius: 8px;
    cursor: default;
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.bezier-curves-container .controls-panel {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 20px;
    backdrop-filter: blur(10px);
    max-height: 640px;
    overflow-y: auto;
}

.bezier-curves-container .controls-panel::-webkit-scrollbar {
    width: 8px;
}

.bezier-curves-container .controls-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.bezier-curves-container .controls-panel::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.5);
    border-radius: 4px;
}

.bezier-curves-container .control-section {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.bezier-curves-container .control-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.bezier-curves-container .control-section h3 {
    margin: 0 0 15px 0;
    font-size: 1.2em;
    color: #667eea;
}

.bezier-curves-container .button-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.bezier-curves-container .curve-btn {
    padding: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #ecf0f1;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9em;
}

.bezier-curves-container .curve-btn:hover {
    background: rgba(102, 126, 234, 0.3);
    border-color: #667eea;
}

.bezier-curves-container .curve-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.bezier-curves-container .animation-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.bezier-curves-container .play-btn {
    padding: 14px;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.bezier-curves-container .play-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(17, 153, 142, 0.4);
}

.bezier-curves-container .play-btn .icon {
    font-size: 1.2em;
}

.bezier-curves-container .slider-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bezier-curves-container .slider-group label {
    font-size: 0.9em;
    color: #bdc3c7;
    display: flex;
    justify-content: space-between;
}

.bezier-curves-container input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.bezier-curves-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.bezier-curves-container input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.bezier-curves-container .checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9em;
    color: #bdc3c7;
}

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

.bezier-curves-container .formula-display {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.bezier-curves-container .formula-item {
    background: rgba(0, 0, 0, 0.2);
    padding: 12px;
    border-radius: 6px;
    border-left: 3px solid #667eea;
}

.bezier-curves-container .formula-label {
    font-size: 0.85em;
    color: #bdc3c7;
    display: block;
    margin-bottom: 8px;
}

.bezier-curves-container .formula {
    font-size: 0.95em;
    color: #ecf0f1;
    overflow-x: auto;
}

.bezier-curves-container .info-section {
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    padding: 15px;
    border: 1px solid rgba(102, 126, 234, 0.3);
}

.bezier-curves-container .info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 15px;
}

.bezier-curves-container .info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.bezier-curves-container .info-item.full-width {
    grid-column: 1 / -1;
}

.bezier-curves-container .info-label {
    font-size: 0.8em;
    color: #bdc3c7;
}

.bezier-curves-container .info-value {
    font-size: 1.1em;
    color: #667eea;
    font-weight: bold;
    font-family: 'Courier New', monospace;
}

.bezier-curves-container .bernstein-display h4 {
    margin: 0 0 10px 0;
    font-size: 0.9em;
    color: #bdc3c7;
}

.bezier-curves-container .bernstein-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.bezier-curves-container .bernstein-item {
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid;
    border-radius: 6px;
    padding: 8px 12px;
    text-align: center;
    min-width: 80px;
}

.bezier-curves-container .bernstein-label {
    display: block;
    font-size: 0.75em;
    color: #bdc3c7;
    margin-bottom: 4px;
}

.bezier-curves-container .bernstein-value {
    display: block;
    font-size: 1em;
    font-weight: bold;
    font-family: 'Courier New', monospace;
}

.bezier-curves-container .explanation {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 30px;
    backdrop-filter: blur(10px);
}

.bezier-curves-container .explanation h2 {
    margin: 0 0 20px 0;
    font-size: 2em;
    color: #667eea;
}

.bezier-curves-container .explanation h3 {
    margin: 30px 0 15px 0;
    font-size: 1.5em;
    color: #764ba2;
}

.bezier-curves-container .explanation p {
    line-height: 1.8;
    color: #bdc3c7;
    margin-bottom: 15px;
}

.bezier-curves-container .explanation ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.bezier-curves-container .explanation li {
    padding: 12px;
    margin-bottom: 10px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    border-left: 3px solid #667eea;
    line-height: 1.6;
}

.bezier-curves-container .explanation li strong {
    color: #667eea;
}

/* Responsive design */
@media (max-width: 1024px) {
    .bezier-curves-container main {
        grid-template-columns: 1fr;
    }

    .bezier-curves-container .controls-panel {
        max-height: none;
    }

    .bezier-curves-container #bezierCanvas {
        height: 500px;
    }
}

@media (max-width: 768px) {
    .bezier-curves-container {
        padding: 10px;
    }

    .bezier-curves-container header {
        padding: 15px;
        margin-bottom: 15px;
    }

    .bezier-curves-container h1 {
        font-size: 1.5em;
    }

    .bezier-curves-container .subtitle {
        font-size: 0.9em;
    }

    .bezier-curves-container .canvas-wrapper {
        padding: 10px;
    }

    .bezier-curves-container #bezierCanvas {
        height: 350px;
    }

    .bezier-curves-container .controls-panel {
        padding: 15px;
    }

    .bezier-curves-container .button-group {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .bezier-curves-container .curve-btn {
        padding: 14px;
        font-size: 0.95em;
        min-height: 48px;
    }

    .bezier-curves-container .play-btn {
        padding: 16px;
        font-size: 1.1em;
        min-height: 52px;
    }

    .bezier-curves-container .info-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .bezier-curves-container .checkbox-label {
        font-size: 1em;
        padding: 8px 0;
    }

    .bezier-curves-container .checkbox-label input[type="checkbox"] {
        width: 20px;
        height: 20px;
        min-width: 20px;
    }

    .bezier-curves-container .slider-group label {
        font-size: 0.95em;
    }

    .bezier-curves-container input[type="range"] {
        height: 8px;
    }

    .bezier-curves-container input[type="range"]::-webkit-slider-thumb {
        width: 22px;
        height: 22px;
    }

    .bezier-curves-container input[type="range"]::-moz-range-thumb {
        width: 22px;
        height: 22px;
    }

    .bezier-curves-container .formula-display {
        gap: 12px;
    }

    .bezier-curves-container .formula-item {
        padding: 10px;
    }

    .bezier-curves-container .bernstein-row {
        gap: 6px;
    }

    .bezier-curves-container .bernstein-item {
        min-width: 70px;
        padding: 6px 10px;
    }

    .bezier-curves-container .explanation {
        padding: 15px;
    }

    .bezier-curves-container .explanation h2 {
        font-size: 1.3em;
    }

    .bezier-curves-container .explanation h3 {
        font-size: 1.1em;
        margin: 20px 0 12px 0;
    }

    .bezier-curves-container .explanation p {
        font-size: 0.95em;
    }

    .bezier-curves-container .explanation li {
        padding: 10px;
        font-size: 0.95em;
    }
}

@media (max-width: 480px) {
    .bezier-curves-container {
        padding: 5px;
    }

    .bezier-curves-container header {
        padding: 10px;
    }

    .bezier-curves-container h1 {
        font-size: 1.3em;
    }

    .bezier-curves-container .subtitle {
        font-size: 0.85em;
    }

    .bezier-curves-container .canvas-wrapper {
        padding: 8px;
        border-radius: 8px;
    }

    .bezier-curves-container #bezierCanvas {
        height: 280px;
        border-radius: 6px;
    }

    .bezier-curves-container .controls-panel {
        padding: 12px;
        border-radius: 8px;
    }

    .bezier-curves-container .control-section {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }

    .bezier-curves-container .control-section h3 {
        font-size: 1.1em;
        margin-bottom: 12px;
    }

    .bezier-curves-container .curve-btn {
        padding: 12px;
        font-size: 0.9em;
    }

    .bezier-curves-container .play-btn {
        padding: 14px;
        font-size: 1em;
    }

    .bezier-curves-container .formula-item {
        padding: 8px;
    }

    .bezier-curves-container .formula {
        font-size: 0.9em;
    }

    .bezier-curves-container .bernstein-item {
        min-width: 60px;
        padding: 5px 8px;
    }

    .bezier-curves-container .bernstein-label {
        font-size: 0.7em;
    }

    .bezier-curves-container .bernstein-value {
        font-size: 0.9em;
    }

    .bezier-curves-container .explanation {
        padding: 12px;
    }

    .bezier-curves-container .explanation h2 {
        font-size: 1.2em;
        margin-bottom: 15px;
    }

    .bezier-curves-container .explanation h3 {
        font-size: 1em;
        margin: 15px 0 10px 0;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .bezier-curves-container .curve-btn,
    .bezier-curves-container .play-btn {
        transition: background 0.2s ease;
    }

    .bezier-curves-container .curve-btn:active {
        background: rgba(102, 126, 234, 0.5);
        transform: scale(0.98);
    }

    .bezier-curves-container .play-btn:active {
        transform: scale(0.98);
    }

    .bezier-curves-container .curve-btn.active:active {
        transform: scale(0.98);
    }

    .bezier-curves-container input[type="range"]::-webkit-slider-thumb {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    }

    .bezier-curves-container input[type="range"]::-moz-range-thumb {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    }
}

/* Landscape mobile optimizations */
@media (max-width: 768px) and (orientation: landscape) {
    .bezier-curves-container header {
        padding: 10px;
        margin-bottom: 10px;
    }

    .bezier-curves-container h1 {
        font-size: 1.2em;
        margin-bottom: 5px;
    }

    .bezier-curves-container .subtitle {
        font-size: 0.8em;
    }

    .bezier-curves-container #bezierCanvas {
        height: 250px;
    }

    .bezier-curves-container .controls-panel {
        padding: 10px;
    }

    .bezier-curves-container .control-section {
        margin-bottom: 15px;
        padding-bottom: 10px;
    }

    .bezier-curves-container .control-section h3 {
        font-size: 1em;
        margin-bottom: 10px;
    }

    .bezier-curves-container .animation-controls {
        gap: 10px;
    }

    .bezier-curves-container .explanation {
        display: none;
    }
}

/* Print styles */
@media print {
    .bezier-curves-container {
        background: white;
        color: black;
    }

    .bezier-curves-container .controls-panel,
    .bezier-curves-container .explanation {
        background: white;
        color: black;
    }
}