/* ===== 复用主站的高端设计系统 ===== */
:root {
    --primary: #0A2540;
    --primary-light: #2D547D;
    --primary-dark: #05172A;
    
    --secondary: #00C2B8;
    --secondary-light: #33E5D6;
    --secondary-dark: #009688;
    
    --accent: #FF6B35;
    --accent-light: #FF9A6C;
    --accent-dark: #E65100;
    
    --gold: #D4AF37;
    --gold-light: #E6C158;
    --gold-dark: #B8941F;
    
    --neutral-900: #121212;
    --neutral-800: #1E1E1E;
    --neutral-700: #2D2D2D;
    --neutral-600: #404040;
    --neutral-500: #666666;
    --neutral-400: #8C8C8C;
    --neutral-300: #B3B3B3;
    --neutral-200: #D9D9D9;
    --neutral-100: #F0F0F0;
    --neutral-50: #FAFAFA;
    
    --shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.05);
    --shadow-md: 0 4px 16px rgba(10, 37, 64, 0.08);
    --shadow-lg: 0 8px 32px rgba(10, 37, 64, 0.12);
    --shadow-xl: 0 16px 48px rgba(10, 37, 64, 0.16);
    
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    --border-radius-full: 999px;
    
    --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--neutral-800);
    background: var(--neutral-50);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
}

/* 主背景设计 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 194, 184, 0.08) 0%, transparent 60%),
        radial-gradient(circle at 80% 20%, rgba(212, 175, 55, 0.05) 0%, transparent 60%),
        linear-gradient(135deg, rgba(10, 37, 64, 0.02) 0%, rgba(255, 255, 255, 0.98) 100%);
    pointer-events: none;
    z-index: -1;
}

/* 奢华导航栏（复用主站） */
.luxury-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.luxury-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 18px;
    box-shadow: var(--shadow-md);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: 'Playfair Display', serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.logo-sub {
    font-size: 11px;
    color: var(--neutral-500);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 600;
}

.back-to-home {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 16px;
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
}

.back-to-home:hover {
    background: rgba(10, 37, 64, 0.05);
}

/* 申请容器 */
.application-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 140px 24px 80px;
}

/* 步骤指示器 */
.steps-container {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary) 0%, var(--accent) 100%);
    z-index: 1;
}

.step {
    position: relative;
    z-index: 2;
    text-align: center;
    flex: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    background: white;
    border: 2px solid var(--neutral-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    color: var(--neutral-500);
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s;
}

.step.active .step-number {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 194, 184, 0.3);
}

.step.completed .step-number {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.step-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-600);
}

.step.active .step-label {
    color: var(--primary);
    font-weight: 600;
}

/* 奢华卡片 */
.luxury-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    padding: 48px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-medium);
}

.luxury-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    background: rgba(255, 255, 255, 0.95);
}

/* 协议区域 */
.agreement-section {
    display: block;
}

.agreement-content {
    max-height: 400px;
    overflow-y: auto;
    padding: 24px;
    margin: 24px 0;
    background: var(--neutral-50);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--neutral-200);
}

.agreement-content h3 {
    color: var(--primary);
    margin: 20px 0 12px;
    font-size: 18px;
}

.agreement-content ul {
    padding-left: 24px;
    margin: 12px 0;
}

.agreement-content li {
    margin-bottom: 8px;
    color: var(--neutral-700);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin: 32px 0;
    padding: 20px;
    background: linear-gradient(135deg, rgba(0, 194, 184, 0.05), transparent);
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--secondary);
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 4px;
    accent-color: var(--secondary);
}

.checkbox-group label {
    flex: 1;
    font-size: 16px;
    line-height: 1.5;
    color: var(--neutral-700);
}

/* 表单样式 */
.form-section {
    display: none;
}

.form-section.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--primary);
    font-size: 15px;
}

.form-control {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--neutral-200);
    border-radius: var(--border-radius-md);
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    transition: var(--transition-fast);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(0, 194, 184, 0.15);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

/* 文件上传 */
.file-upload-area {
    border: 3px dashed var(--neutral-300);
    border-radius: var(--border-radius-md);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
    background: linear-gradient(135deg, rgba(0, 194, 184, 0.02), transparent);
}

.file-upload-area:hover {
    border-color: var(--secondary);
    background: linear-gradient(135deg, rgba(0, 194, 184, 0.05), transparent);
}

.file-upload-area i {
    font-size: 48px;
    color: var(--secondary);
    margin-bottom: 16px;
}

.file-preview {
    margin-top: 24px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--neutral-50);
    border-radius: var(--border-radius-md);
    margin-bottom: 12px;
    border: 1px solid var(--neutral-200);
}

.file-item .file-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-item .file-size {
    color: var(--neutral-500);
    font-size: 14px;
}

.remove-file {
    color: var(--accent);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
}

.remove-file:hover {
    background: rgba(255, 107, 53, 0.1);
}

/* 按钮样式 */
.luxury-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    letter-spacing: 0.5px;
}

.luxury-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    opacity: 0;
    transition: var(--transition-fast);
}

.luxury-btn:hover::before {
    opacity: 1;
}

.luxury-btn-primary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    box-shadow: 0 8px 32px rgba(0, 194, 184, 0.3);
}

.luxury-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 194, 184, 0.4);
}

.luxury-btn-secondary {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary);
    border: 2px solid var(--neutral-200);
}

.luxury-btn-secondary:hover {
    border-color: var(--secondary);
    background: white;
}

.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-disabled:hover {
    transform: none !important;
    box-shadow: none !important;
}

/* 表单操作 */
.form-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--neutral-200);
}

/* 验证码发送 */
.verification-group {
    display: flex;
    gap: 12px;
}

.verification-group .form-control {
    flex: 1;
}

.countdown-timer {
    display: inline-block;
    width: 120px;
    text-align: center;
    color: var(--neutral-500);
    font-size: 14px;
}

/* 成功/错误提示 */
.alert {
    padding: 24px;
    border-radius: var(--border-radius-md);
    margin-bottom: 32px;
    display: none;
    animation: fadeIn 0.5s ease;
}

.alert-success {
    background: linear-gradient(135deg, rgba(0, 194, 184, 0.1), transparent);
    border: 2px solid var(--secondary);
    color: var(--primary);
}

.alert-error {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), transparent);
    border: 2px solid var(--accent);
    color: var(--primary);
}

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 194, 184, 0.3);
    border-radius: 50%;
    border-top-color: var(--secondary);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .application-container {
        padding: 120px 16px 60px;
    }
    
    .luxury-card {
        padding: 32px 24px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 16px;
    }
    
    .form-actions .luxury-btn {
        width: 100%;
    }
    
    .steps-container {
        padding: 0 16px;
    }
    
    .step-label {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .luxury-header {
        padding: 0 16px;
    }
    
    .application-container {
        padding: 100px 12px 40px;
    }
    
    .luxury-card {
        padding: 24px 16px;
    }
    
    .verification-group {
        flex-direction: column;
    }
}

/* 安全区域适配 */
@supports (padding-top: env(safe-area-inset-top)) {
    .luxury-header {
        padding-top: env(safe-area-inset-top);
        height: calc(80px + env(safe-area-inset-top));
    }
    
    .application-container {
        padding-top: calc(140px + env(safe-area-inset-top));
    }
}