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

:root {
    --primary: #b4464b;
    --primary-dark: #8b3539;
    --secondary: #3a5f4b;
    --accent: #e8c39e;
    --dark: #2c2c2c;
    --light: #f9f3e9;
    --gray: #6c757d;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0,0,0,0.1);
    --border-radius: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #667b68 0%, #a3b899 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px;
    line-height: 1.6;
    color: var(--dark);
}

.container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 32px;
}

h1 {
    font-size: clamp(28px, 6vw, 42px);
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.subtitle {
    color: rgba(255,255,255,0.9);
    font-size: clamp(14px, 4vw, 18px);
    font-style: italic;
}

.card, .result-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: clamp(20px, 5vw, 40px);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    transition: all 0.3s ease;
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-dark);
    font-size: 16px;
}

input, select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 16px;
    transition: border 0.2s;
    background: var(--white);
    appearance: none;
    -webkit-appearance: none;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(180,70,75,0.1);
}

.generate-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.generate-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

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

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner.large {
    width: 40px;
    height: 40px;
    border-width: 4px;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.badge {
    background: var(--accent);
    color: var(--dark);
    padding: 6px 12px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
}

.name-display {
    text-align: center;
    margin: 30px 0;
    padding: 20px;
    background: linear-gradient(145deg, #f8f0e7, #fef9f2);
    border-radius: 20px;
}

.chinese-name {
    font-size: clamp(48px, 15vw, 80px);
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 8px;
    letter-spacing: 4px;
}

.pinyin {
    font-size: clamp(16px, 4vw, 24px);
    color: var(--secondary);
    font-style: italic;
}

.meaning-box {
    background: #f0f4f0;
    padding: 20px;
    border-radius: 12px;
    margin: 24px 0;
}

.meaning-text {
    font-size: 16px;
    line-height: 1.8;
    white-space: pre-line;
}

.character-breakdown {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 24px 0;
}

.char-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    background: #f8f8f8;
    border-radius: 12px;
    transition: transform 0.2s;
}

.char-item:hover {
    transform: translateX(4px);
    background: #f0f0f0;
}

.char-large {
    font-size: 36px;
    min-width: 60px;
    text-align: center;
    color: var(--primary);
}

.char-meaning {
    flex: 1;
    color: var(--dark);
}

.char-meaning small {
    display: block;
    color: var(--gray);
    font-size: 12px;
    margin-top: 4px;
}

.action-buttons {
    display: flex;
    gap: 12px;
    margin: 24px 0;
    flex-wrap: wrap;
}

.primary-btn, .secondary-btn {
    flex: 1;
    min-width: 150px;
    padding: 14px 20px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.primary-btn {
    background: var(--secondary);
    color: var(--white);
}

.primary-btn:hover {
    background: #2e4e3f;
    transform: translateY(-2px);
}

.secondary-btn {
    background: #e0e0e0;
    color: var(--dark);
}

.secondary-btn:hover {
    background: #d0d0d0;
}

.saved-note {
    text-align: center;
    padding: 12px;
    background: #d4edda;
    color: #155724;
    border-radius: 8px;
    margin-top: 16px;
}

.loading-state {
    text-align: center;
    padding: 40px;
    background: rgba(255,255,255,0.9);
    border-radius: var(--border-radius);
    color: var(--primary);
}

.loading-sub {
    color: var(--gray);
    font-size: 14px;
    margin-top: 8px;
}

.saved-section {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.saved-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.saved-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    background: #f8f8f8;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.saved-item:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.saved-chinese {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary);
    min-width: 100px;
}

.saved-info {
    flex: 1;
}

.saved-english {
    font-weight: 600;
}

.saved-meaning {
    font-size: 13px;
    color: var(--gray);
}

.delete-saved {
    color: #dc3545;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.delete-saved:hover {
    background: rgba(220,53,69,0.1);
}

footer {
    text-align: center;
    margin-top: 40px;
    color: rgba(255,255,255,0.8);
    font-size: 14px;
}

hr {
    border: none;
    border-top: 2px dashed var(--accent);
    margin: 30px 0;
}

/* 移动端适配 */
@media (max-width: 600px) {
    body {
        padding: 8px;
    }
    
    .card, .result-card {
        padding: 20px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .char-item {
        flex-wrap: wrap;
    }
    
    .saved-item {
        flex-wrap: wrap;
    }
    
    .delete-saved {
        margin-left: auto;
    }
}

/* 黑暗模式支持（可选） */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #2c3e50, #34495e);
    }
    
    .card, .result-card, .saved-section {
        background: #2d2d2d;
        color: #e0e0e0;
    }
    
    .meaning-box {
        background: #363636;
    }
    
    .char-item, .saved-item {
        background: #363636;
    }
    
    .chinese-name {
        color: #e8c39e;
    }
}