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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

header p {
    font-size: 1.1em;
    opacity: 0.9;
}

.main-content {
    display: flex;
    flex-wrap: wrap;
    padding: 30px;
    gap: 30px;
}

.input-section, .wheel-section {
    flex: 1;
    min-width: 300px;
}

.input-section h2, .wheel-section h2 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.4em;
}

#name-input {
    width: 100%;
    height: 150px;
    padding: 15px;
    border: 2px solid #dee2e6;
    border-radius: 10px;
    font-size: 1.1em;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s;
}

#name-input:focus {
    outline: none;
    border-color: #4facfe;
    box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
}

.input-hint {
    margin: 10px 0;
    color: #6c757d;
    font-size: 0.9em;
}

#start-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1.1em;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    width: 100%;
}

#start-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

#start-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.wheel-container {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.wheel {
    position: relative;
    width: 300px;
    height: 300px;
}

.wheel-pointer {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: #ff4757;
    clip-path: polygon(50% 100%, 0 0, 100% 0);
    z-index: 10;
}

.wheel-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    transition: transform 4s cubic-bezier(0.17, 0.67, 0.12, 0.99);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    border: 5px solid #333;
}

.wheel-segment {
    position: absolute;
    width: 50%;
    height: 50%;
    transform-origin: bottom right;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.wheel-segment-content {
    transform: rotate(45deg);
    width: 140px;
    text-align: center;
    font-weight: bold;
    font-size: 14px;
    color: #333;
    margin-left: 20px;
    margin-bottom: 20px;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.8);
}

.result-display {
    text-align: center;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-placeholder {
    color: #6c757d;
    font-style: italic;
    font-size: 1.2em;
}

.result-name {
    font-size: 2em;
    font-weight: bold;
    color: #ff6b6b;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: pulse 1s infinite;
}

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

.instructions {
    background: #e3f2fd;
    border-left: 4px solid #2196f3;
    padding: 20px;
    margin: 20px 30px 30px;
    border-radius: 0 8px 8px 0;
}

.instructions h3 {
    color: #1976d2;
    margin-bottom: 10px;
}

.instructions ul {
    padding-left: 20px;
}

.instructions li {
    margin-bottom: 8px;
    color: #333;
}

@media (max-width: 768px) {
    .container {
        margin: 10px;
        border-radius: 10px;
    }
    
    header {
        padding: 20px 15px;
    }
    
    header h1 {
        font-size: 2em;
    }
    
    .main-content {
        flex-direction: column;
        padding: 20px 15px;
    }
    
    .wheel {
        width: 250px;
        height: 250px;
    }
}