/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #000000;
    color: #ffffff;
    line-height: 1.6;
    min-height: 100vh;
}

/* 主容器 - 移动端优先 */
.container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Logo区域 */
.logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

.logo-img {
    width: 260px;
    height: 63px;
    border-radius: 12px;
    object-fit: contain;
    display: block;
}

/* 标题 */
.title {
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 25px;
    color: #ffffff;
}

/* 分区样式 */
.section {
    margin-bottom: 30px;
}

.section-title {
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid #333333;
}

/* 输入表单网格 */
.input-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    color: #cccccc;
    font-size: 14px;
    margin-bottom: 5px;
    font-weight: 500;
}

.input-group input {
    background-color: #1a1a1a;
    border: 1px solid #333333;
    border-radius: 8px;
    padding: 12px 15px;
    color: #ffffff;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #FF8C00;
    box-shadow: 0 0 0 2px rgba(255, 140, 0, 0.2);
}

.input-group input::placeholder {
    color: #666666;
}

/* 计算结果样式 */
.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #222222;
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    color: #cccccc;
    font-size: 14px;
}

.result-value {
    color: #FF8C00;
    font-size: 16px;
    font-weight: 600;
}

.result-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.result-grid .result-item {
    border-bottom: 1px solid #222222;
}

.result-grid .result-item:last-child {
    border-bottom: 1px solid #222222;
}

/* 交易结果表格 */
.trading-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background-color: #333333;
    border-radius: 8px;
    overflow: hidden;
}

.trading-column {
    background-color: #000000;
    padding: 15px;
}

.column-header {
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #333333;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 12px;
}

.result-row .result-label {
    color: #cccccc;
    font-size: 12px;
}

.result-row .result-value {
    font-size: 12px;
    font-weight: 600;
}

.profit {
    color: #00ff88;
}

.loss {
    color: #ff4444;
}

/* 底部信息 */
.footer {
    margin-top: auto;
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid #333333;
}

.footer-text {
    color: #666666;
    font-size: 12px;
    margin-bottom: 5px;
}

.footer-brand {
    color: #666666;
    font-size: 12px;
    font-weight: 600;
}

/* 平板端适配 */
@media (min-width: 768px) {
    .container {
        max-width: 500px;
        padding: 30px;
    }
    
    .logo-img {
        width: 320px;
        height: auto;
    }
    
    .title {
        font-size: 32px;
    }
    
    .input-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    
    .result-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .result-row {
        font-size: 13px;
    }
    
    .result-row .result-label,
    .result-row .result-value {
        font-size: 13px;
    }
}

/* PC端适配 */
@media (min-width: 1024px) {
    .container {
        max-width: 600px;
        padding: 40px;
    }
    
    .logo-img {
        width: 360px;
        height: auto;
    }
    
    .title {
        font-size: 30px;
    }
    
    .section-title {
        font-size: 18px;
    }
    
    .input-group label {
        font-size: 15px;
    }
    
    .input-group input {
        font-size: 16px;
        padding: 14px 16px;
    }
    
    .result-label {
        font-size: 15px;
    }
    
    .result-value {
        font-size: 17px;
    }
    
    .result-row {
        font-size: 14px;
        padding: 10px 0;
    }
    
    .result-row .result-label,
    .result-row .result-value {
        font-size: 14px;
    }
    
    .column-header {
        font-size: 17px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .input-group input {
        padding: 15px;
        font-size: 16px;
    }
    
    .result-item {
        padding: 15px 0;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 深色模式适配（已经是深色主题，但保持兼容性） */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #000000;
        color: #ffffff;
    }
}

/* 动画效果 */
.input-group input,
.result-value {
    transition: all 0.3s ease;
}

.result-value.updating {
    transform: scale(1.05);
    color: #FF8C00;
}

/* 加载状态 */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

.updating {
    animation: pulse 0.3s ease-in-out;
}

.error-message {
    color: #ff4444;
    font-size: 12px;
    margin-top: 5px;
    animation: fadeIn 0.3s ease-in-out;
}

input.error {
    border-color: #ff4444 !important;
    box-shadow: 0 0 0 2px rgba(255, 68, 68, 0.2) !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
        margin: 10px;
        border-radius: 15px;
    }
    
    .logo-img {
        width: 240px;
        height: 58px;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .title {
        font-size: 18px;
        margin-bottom: 20px;
    }
    
    .input-group {
        margin-bottom: 15px;
    }
    
    .input-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .input-field {
        padding: 12px 15px;
        font-size: 16px;
    }
    
    .calculate-btn {
        padding: 15px;
        font-size: 16px;
        margin: 25px 0;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .result-item {
        padding: 12px 15px;
    }
    
    .result-label {
        font-size: 13px;
    }
    
    .result-value {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        margin: 5px;
        padding: 12px;
    }
    
    .logo-img {
        width: 200px;
        height: 48px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .title {
        font-size: 16px;
    }
    
    .input-field {
        padding: 10px 12px;
        font-size: 15px;
    }
    
    .result-item {
        padding: 10px 12px;
    }
    
    .result-label {
        font-size: 12px;
    }
    
    .result-value {
        font-size: 15px;
    }
}