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

:root {
    --color-primary: #D4AF37;
    --color-primary-dark: #B8960C;
    --color-primary-light: #F5E6B8;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F8F9FA;
    --color-text: #1F2937;
    --color-text-light: #6B7280;
    --color-border: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --radius: 24px;
    --radius-sm: 16px;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--color-bg-alt);
    color: var(--color-text);
    line-height: 1.6;
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-light);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

/* Hero 区域 */
.hero {
    text-align: center;
    padding: 60px 24px 40px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }
}

.hero-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 60px;
}

/* 卡片 */
.card {
    background: var(--color-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 32px;
    margin-bottom: 32px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    box-shadow: var(--shadow-xl);
}

/* 行业选择器 */
.industry-selector {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    justify-content: center;
}

.industry-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 48px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.industry-btn .btn-icon {
    font-size: 20px;
}

.industry-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.industry-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* 输入框 */
.input-wrapper {
    margin-bottom: 24px;
}

.user-input {
    width: 100%;
    padding: 20px;
    font-size: 16px;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    resize: vertical;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.user-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* 生成按钮 */
.generate-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border: none;
    border-radius: 48px;
    font-size: 18px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

/* 结果网格 */
.result-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
}

@media (max-width: 768px) {
    .result-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* 图片区 */
.result-image-area {
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.image-container {
    position: relative;
}

.result-image {
    width: 100%;
    height: auto;
    display: block;
}

.image-download-btn {
    position: absolute;
    bottom: 16px;
    right: 16px;
    background: rgba(0, 0, 0, 0.6);
    border: none;
    border-radius: 32px;
    padding: 8px 16px;
    color: white;
    font-size: 14px;
    cursor: pointer;
    backdrop-filter: blur(4px);
    transition: background 0.3s;
}

.image-download-btn:hover {
    background: rgba(0, 0, 0, 0.8);
}

/* 文案区 */
.script-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.result-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.copy-btn {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 32px;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.copy-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.result-script {
    background: var(--color-bg-alt);
    padding: 20px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    line-height: 1.7;
    white-space: pre-wrap;
    margin-bottom: 20px;
}

/* 关键词和标签 */
.keywords-section {
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--color-text-light);
}

.keywords-section span {
    display: inline-block;
    background: var(--color-bg-alt);
    padding: 4px 12px;
    border-radius: 20px;
    margin: 4px 6px 4px 0;
    font-size: 12px;
}

.hashtags-section {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.hashtags-section .tag {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* 骨架屏 */
.skeleton-loader {
    background: var(--color-bg);
    border-radius: var(--radius);
    padding: 32px;
}

.skeleton-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
}

@media (max-width: 768px) {
    .skeleton-grid {
        grid-template-columns: 1fr;
    }
}

.skeleton-image {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-sm);
    aspect-ratio: 1 / 1;
}

.skeleton-text {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skeleton-line {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    height: 16px;
    border-radius: 8px;
}

.skeleton-line.short {
    width: 60%;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 复制文案按钮右对齐 */
.script-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 12px;
}

/* 页脚 */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 32px 24px;
    text-align: center;
    color: var(--color-text-light);
    font-size: 14px;
}

.footer-icp a {
    color: var(--color-text-light);
    text-decoration: none;
}

.footer-icp a:hover {
    color: var(--color-primary);
}

/* Toast 提示 */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: 48px;
    font-size: 14px;
    z-index: 1000;
    transition: transform 0.3s;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}