:root {
    --primary: #2563eb;
    --secondary: #7c3aed;
    --tertiary: #06b6d4;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-light: #f8fafc;
    --bg-card: #ffffff;
    --border-light: #e5e7eb;
}

body {
    background-color: var(--bg-light);
}

/* 顶部导航栏样式 */
#main-header {
    z-index: 1000;
}

/* 主内容区样式 */
#main-content {
    padding-top: 80px;
}

/* Hero区域样式 */
#hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

#hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml,<svg xmlns="https://s.coze.cn/image/Iu3VYyWOsYg/" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,192L48,181.3C96,171,192,149,288,149.3C384,149,480,171,576,181.3C672,192,768,192,864,181.3C960,171,1056,149,1152,138.7C1248,128,1344,128,1392,128L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}

/* 表单区域样式 */
#auth-section {
    padding: 3rem 0;
}

/* 表单卡片样式 */
#auth-section .card {
    border: none;
    border-radius: 1rem;
    overflow: hidden;
}

/* 标签页样式 */
.nav-tabs .nav-link {
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    background-color: transparent;
}

/* 表单输入框样式 */
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.25);
}

/* 错误提示样式 */
.error-message {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* 成功提示样式 */
.success-message {
    color: var(--success);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}