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

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

.container {
    max-width: 1000px;
    width: 100%;
    text-align: center;
}

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

.subtitle {
    color: rgba(255,255,255,0.9);
    font-size: 1.2em;
    margin-bottom: 20px;
}

.info-bar {
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    color: white;
    font-size: 1.1em;
}

.display-box {
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 40px;
    margin: 20px 0;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

.poem-info {
    color: white;
    text-align: center;
}

.poem-title {
    font-size: 3em;
    font-weight: bold;
    margin-bottom: 15px;
    text-shadow: 3px 3px 6px rgba(0,0,0,0.4);
    animation: titleGlow 2s ease-in-out infinite alternate;
}

.poem-author {
    font-size: 1.8em;
    opacity: 0.9;
    font-style: italic;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 25px 0;
    flex-wrap: wrap;
}

button {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    border: none;
    padding: 12px 25px;
    border-radius: 20px;
    color: white;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    min-width: 120px;
}

button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.4);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.status {
    color: rgba(255,255,255,0.8);
    font-size: 1.1em;
    margin-top: 15px;
    font-weight: bold;
}

.signature {
    margin-top: 30px;
    color: rgba(255,255,255,0.7);
    font-size: 0.9em;
    font-style: italic;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(135deg, #1a2a6c 0%, #b21f1f 50%, #fdbb2d 100%);
    padding: 40px;
    border-radius: 20px;
    max-width: 90%;
    max-height: 90%;
    width: 600px;
    overflow-y: auto;
    color: white;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.modal-title {
    font-size: 2.2em;
    margin-bottom: 15px;
    color: white;
}

.modal-author {
    font-size: 1.4em;
    margin-bottom: 25px;
    opacity: 0.9;
}

.poem-content {
    font-size: 1.6em;
    line-height: 1.8;
    margin: 20px 0;
    letter-spacing: 2px;
}

.poem-line {
    margin: 8px 0;
}

.explanation {
    font-size: 1.1em;
    line-height: 1.6;
    margin-top: 25px;
    text-align: left;
}

.detail-section {
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
    border-left: 4px solid rgba(255,255,255,0.3);
}

.detail-section strong {
    color: #FFD700;
    font-size: 1.1em;
    margin-bottom: 8px;
    display: block;
}

.keyword {
    color: #FF6B6B;
    font-weight: bold;
    background: rgba(255,107,107,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    margin-right: 5px;
}

/* 动画效果 */
@keyframes titleGlow {
    from {
        text-shadow: 3px 3px 6px rgba(0,0,0,0.4);
    }
    to {
        text-shadow: 3px 3px 12px rgba(255,255,255,0.3);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 响应式设计 - 移动端优化 */
@media (max-width: 768px) {
    body {
        padding: 10px;
        min-height: 100vh;
        display: block;
    }
    
    .container {
        max-width: 100%;
        padding: 0 10px;
    }
    
    h1 {
        font-size: 1.8em;
        margin-bottom: 8px;
        line-height: 1.2;
    }
    
    .subtitle {
        font-size: 1em;
        margin-bottom: 15px;
    }
    
    .info-bar {
        padding: 12px;
        font-size: 0.9em;
        margin-bottom: 15px;
    }
    
    .display-box {
        padding: 25px 15px;
        min-height: 150px;
        margin: 15px 0;
        border-radius: 15px;
    }
    
    .poem-title {
        font-size: 1.8em;
        margin-bottom: 10px;
        line-height: 1.2;
    }
    
    .poem-author {
        font-size: 1.2em;
        line-height: 1.3;
    }
    
    .button-group {
        flex-direction: column;
        align-items: center;
        gap: 12px;
        margin: 20px 0;
    }
    
    button {
        width: 100%;
        max-width: 280px;
        padding: 14px 20px;
        font-size: 1.1em;
        border-radius: 15px;
    }
    
    .status {
        font-size: 1em;
        margin-top: 12px;
    }
    
    .signature {
        margin-top: 25px;
        font-size: 0.8em;
    }
    
    .modal-content {
        width: 95%;
        padding: 20px;
        border-radius: 15px;
    }
    
    .modal-title {
        font-size: 1.8em;
        margin-bottom: 12px;
    }
    
    .modal-author {
        font-size: 1.2em;
        margin-bottom: 20px;
    }
    
    .poem-content {
        font-size: 1.2em;
        line-height: 1.6;
    }
    
    .poem-line {
        margin: 6px 0;
    }
    
    .explanation {
        font-size: 0.95em;
        margin-top: 20px;
    }
    
    .detail-section {
        padding: 12px;
        margin-bottom: 15px;
        font-size: 0.9em;
    }
    
    .detail-section strong {
        font-size: 1em;
    }
    
    .keyword {
        padding: 1px 4px;
        font-size: 0.9em;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    h1 {
        font-size: 1.6em;
    }
    
    .poem-title {
        font-size: 1.6em;
    }
    
    .poem-author {
        font-size: 1.1em;
    }
    
    .display-box {
        padding: 20px 10px;
        min-height: 120px;
    }
    
    button {
        padding: 12px 16px;
        font-size: 1em;
    }
    
    .modal-content {
        padding: 15px;
    }
    
    .modal-title {
        font-size: 1.6em;
    }
    
    .poem-content {
        font-size: 1.1em;
    }
}

/* 横屏优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .container {
        max-width: 90%;
    }
    
    .display-box {
        min-height: 100px;
        padding: 15px;
    }
    
    .button-group {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    button {
        width: auto;
        min-width: 120px;
        padding: 10px 15px;
    }
}