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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

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

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 模块索引样式 */
.module-index {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.module-index h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-size: 1.8rem;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.module-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.module-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
    border-color: #667eea;
}

.module-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #667eea;
}

.module-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #333;
}

.module-card p {
    color: #666;
    font-size: 0.9rem;
}

/* 模块内容样式 */
.module-content {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.module-header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    gap: 20px;
}

.back-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease;
}

.back-btn:hover {
    background: #5a6fd8;
}

.module-header h2 {
    color: #333;
    font-size: 1.8rem;
}

/* 线路模块样式 */
.wires-input h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.4rem;
}

.input-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 25px;
}

.manual-input label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #555;
}

.manual-input input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.manual-input input:focus {
    outline: none;
    border-color: #667eea;
}

.color-buttons p {
    margin-bottom: 15px;
    font-weight: 600;
    color: #555;
}

.color-btn-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.color-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    min-width: 60px;
}

.color-btn.red { background: #ff4757; color: white; }
.color-btn.white { background: #f1f2f6; color: #333; }
.color-btn.blue { background: #3742fa; color: white; }
.color-btn.yellow { background: #ffa502; color: white; }
.color-btn.black { background: #2f3542; color: white; }

.color-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.clear-btn {
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}

.current-wires {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.current-wires h4 {
    color: #333;
    margin-bottom: 5px;
}

.solve-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    width: 100%;
}

.solve-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

/* 序列号选择样式 */
.serial-number-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 12px;
    margin: 25px 0;
}

.serial-number-section h3 {
    margin-bottom: 15px;
    color: #333;
}

.serial-options {
    display: flex;
    gap: 15px;
}

.serial-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.serial-btn:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

/* 按钮模块样式 */
.button-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 25px;
}

.option-group {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
}

.option-group label {
    display: block;
    margin-bottom: 15px;
    font-weight: 600;
    color: #333;
    font-size: 1.1rem;
}

.button-color-btns, .button-text-btns, .indicator-btns, .battery-btns {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-color-btn, .btn-text-btn, .indicator-btn, .battery-btn {
    padding: 8px 16px;
    border: 2px solid #ddd;
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.btn-color-btn:hover, .btn-text-btn:hover, .indicator-btn:hover, .battery-btn:hover {
    border-color: #667eea;
    background: #f0f4ff;
}

.btn-color-btn.selected, .btn-text-btn.selected, .indicator-btn.selected, .battery-btn.selected {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.current-button-info {
    background: #e8f4fd;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    border-left: 4px solid #667eea;
}

.current-button-info h4 {
    margin-bottom: 10px;
    color: #333;
}

.current-button-info p {
    margin-bottom: 5px;
    color: #555;
}

/* 结果样式 */
.result-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 12px;
    margin-top: 25px;
}

.result-section h3 {
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.solution {
    font-size: 1.1rem;
    line-height: 1.6;
}

.solution .step {
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.solution .step:last-child {
    margin-bottom: 0;
}

/* 占位模块样式 */
.coming-soon {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.coming-soon i {
    font-size: 4rem;
    margin-bottom: 20px;
    color: #ddd;
}

.coming-soon h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .input-methods {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .button-options {
        grid-template-columns: 1fr;
    }
    
    .module-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .color-btn-group {
        justify-content: center;
    }
    
    .serial-options {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .module-card {
        padding: 20px;
    }
    
    .module-content {
        padding: 20px;
    }
    
    .color-btn {
        min-width: 50px;
        padding: 8px 12px;
    }
}

/* 记忆模块样式 */
.memory-input h3 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.4rem;
}

.memory-description {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 25px;
    color: #856404;
    font-style: italic;
}

.memory-stage-info {
    background: #e8f4fd;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 25px;
    border-left: 4px solid #667eea;
}

.memory-stage-info h4 {
    color: #333;
    margin-bottom: 5px;
    font-size: 1.2rem;
}

.memory-stage-info p {
    color: #666;
    margin: 0;
}

.button-order-input {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 4px solid #ffc107;
}

.button-order-input h4 {
    margin-bottom: 10px;
    color: #333;
    font-size: 1.1rem;
}

.button-order-input p {
    margin-bottom: 15px;
    color: #666;
    font-size: 0.9rem;
}

.order-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    justify-content: center;
}

.order-input {
    width: 60px;
    height: 50px;
    text-align: center;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: bold;
    transition: border-color 0.3s ease;
}

.order-input:focus {
    outline: none;
    border-color: #ffc107;
}

.memory-display-section {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.memory-display-section h4 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.1rem;
}

.display-number-btns {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.display-btn {
    width: 60px;
    height: 60px;
    border: 2px solid #ddd;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.5rem;
    font-weight: bold;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.display-btn:hover {
    border-color: #667eea;
    background: #f0f4ff;
    transform: scale(1.05);
}

.display-btn.selected {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.memory-history {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 25px;
}

.memory-history h4 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.1rem;
}

.history-display {
    min-height: 100px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.4;
}

.history-item {
    margin-bottom: 8px;
    padding: 5px 0;
    border-bottom: 1px solid #eee;
}

.history-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.history-item.error {
    color: #dc3545;
    background: #f8d7da;
    padding: 8px;
    border-radius: 4px;
    border-left: 3px solid #dc3545;
}

.history-item.success {
    color: #155724;
    background: #d4edda;
    padding: 8px;
    border-radius: 4px;
    border-left: 3px solid #28a745;
}

.memory-controls {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.reset-btn {
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    flex: 1;
}

.reset-btn:hover {
    background: #ff5252;
    transform: translateY(-2px);
}

.memory-controls .solve-btn {
    flex: 2;
}

.next-stage-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 15px;
}

.next-stage-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(40, 167, 69, 0.4);
}

/* 记忆模块响应式设计 */
@media (max-width: 768px) {
    .display-number-btns {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .display-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .memory-controls {
        flex-direction: column;
    }
    
    .memory-controls .solve-btn {
        flex: none;
    }
}

.simon-vowel-btn {
    background: linear-gradient(135deg, #00b4d8 0%, #48cae4 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 10px;
    transition: all 0.3s ease;
}
.simon-vowel-btn:hover {
    background: #0096c7;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,180,216,0.2);
}

.simon-vowel-btn.selected {
    background: linear-gradient(135deg, #0077b6 0%, #00b4d8 100%);
    color: #fff;
    border: 2px solid #0077b6;
    box-shadow: 0 0 0 3px #caf0f8;
}

.morse-input-section h3 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.2rem;
}

#morse-input {
    margin-bottom: 10px;
    border: 2px solid #48cae4;
}

.morse-result-list {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px 20px;
    min-height: 40px;
    font-size: 1.1rem;
    color: #333;
    box-shadow: 0 2px 8px #0001;
}

.morse-word-item {
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.morse-word-item:last-child {
    border-bottom: none;
}
.morse-word-item .word {
    font-weight: bold;
    letter-spacing: 2px;
}
.morse-word-item .freq {
    color: #0077b6;
    font-size: 1rem;
    font-weight: 500;
}

.password-letter-group {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    justify-content: center;
}
.pw-letter {
    width: 90px;
    height: 50px;
    text-align: center;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: bold;
    transition: border-color 0.3s ease;
}
.pw-letter:focus {
    outline: none;
    border-color: #0077b6;
}
.pw-result-list {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px 20px;
    min-height: 40px;
    font-size: 1.1rem;
    color: #333;
    box-shadow: 0 2px 8px #0001;
}
.pw-word-item {
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
    font-weight: bold;
    letter-spacing: 2px;
}
.pw-word-item:last-child {
    border-bottom: none;
}

.wire-seq-panel {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px 20px 20px 20px;
    box-shadow: 0 2px 8px #0001;
}
.wire-seq-input-group input {
    font-size: 1.1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 10px 12px;
    width: 100%;
    margin-bottom: 10px;
}
.wire-seq-panel-btns .wire-seq-btn {
    background: linear-gradient(135deg, #667eea 0%, #48cae4 100%);
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}
.wire-seq-panel-btns .wire-seq-btn.reset {
    background: #ff6b6b;
}
.wire-seq-panel-btns .wire-seq-btn:hover {
    background: #5a6fd8;
}
.wire-seq-panel-btns .wire-seq-btn.reset:hover {
    background: #ff5252;
}
.wire-seq-result-list {
    background: #fff;
    border-radius: 10px;
    padding: 15px 20px;
    min-height: 40px;
    font-size: 1.1rem;
    color: #333;
    box-shadow: 0 2px 8px #0001;
}
.wire-seq-wire-item {
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    gap: 10px;
}
.wire-seq-wire-item:last-child {
    border-bottom: none;
}
.wire-seq-wire-item .desc {
    font-weight: bold;
    min-width: 80px;
}
.wire-seq-wire-item .cut {
    color: #28a745;
    font-weight: bold;
    margin-left: 10px;
}
.wire-seq-wire-item .nocut {
    color: #dc3545;
    font-weight: bold;
    margin-left: 10px;
}

.wire-seq-quick-input label {
    display: inline-block;
    margin: 0 0 0 0;
    padding: 0;
    font-weight: normal;
}
.wire-seq-radio-group {
    display: flex;
    border: 1.5px solid #d0d7de;
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
}
.wire-seq-radio-label {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 0;
    min-width: 56px;
    text-align: center;
    padding: 0;
    height: 32px;
    line-height: 32px;
    cursor: pointer;
    color: #555;
    background: #fff;
    border-right: 1px solid #d0d7de;
    font-size: 1.15rem;
    user-select: none;
    transition: background 0.2s, color 0.2s;
    border-radius: 0;
}
.wire-seq-radio-label:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}
.wire-seq-radio-label:last-child {
    border-right: none;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}
.wire-seq-radio-label.selected {
    background: #409eff;
    color: #fff;
    font-weight: bold;
    z-index: 1;
}
.wire-seq-radio-label:not(.selected):hover {
    background: #e6f0fa;
    color: #409eff;
} 
.wire-seq-btn.wire-seq-add-btn {
    background: #409eff;
    color: #fff;
    font-weight: bold;
    border-radius: 6px;
    border: none;
    padding: 0 18px;
    font-size: 1rem;
    height: 32px;
    box-shadow: 0 2px 8px #409eff22;
    transition: background 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wire-seq-radio-group input[type="radio"] {
    display: none;
}

.complex-radio-group {
    display: flex;
    border: 1.5px solid #d0d7de;
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
    min-width: 120px;
}
.complex-radio-label {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 0;
    min-width: 48px;
    text-align: center;
    padding: 0;
    height: 32px;
    line-height: 32px;
    cursor: pointer;
    color: #555;
    background: #fff;
    border-right: 1px solid #d0d7de;
    font-size: 1rem;
    user-select: none;
    transition: background 0.2s, color 0.2s;
    border-radius: 0;
    position: relative;
}
.complex-radio-label:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}
.complex-radio-label:last-child {
    border-right: none;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}
.complex-radio-label.selected {
    background: #409eff;
    color: #fff;
    font-weight: bold;
    z-index: 1;
}
.complex-radio-label:not(.selected):hover {
    background: #e6f0fa;
    color: #409eff;
}
.complex-radio-label input[type="checkbox"],
.complex-radio-label input[type="radio"] {
    display: none;
}