/* ========================================
   富友自助进件服务平台 - 企业级 UI（腾讯云风格）
   纯白主体 / 克制蓝色点缀 / 细边框 / 小圆角
   ======================================== */
:root {
    --primary: #0052d9;
    --primary-light: #1668e3;
    --primary-dark: #003cab;
    --primary-weak: #ecf2fe;
    --secondary: #5e6673;
    --success: #00a870;
    --warning: #e37318;
    --danger: #d54941;
    --info: #0052d9;
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f7;
    --bg-tertiary: #f5f6f8;
    --text-primary: #1d2129;
    --text-secondary: #4e5969;
    --text-muted: #86909c;
    --border-color: #e5e6eb;
    --border-strong: #c9cdd4;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.10);
    --radius-sm: 3px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --transition: all 0.15s ease;
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5715;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 顶部导航 */
.navbar-premium {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
    height: 60px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand-premium {
    font-weight: 600;
    font-size: 1.0625rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
}

.navbar-brand-premium:hover { color: var(--primary); }

.brand-icon {
    width: 30px;
    height: 30px;
    background: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
}

/* 卡片 */
.card-premium {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: none;
    transition: var(--transition);
    overflow: hidden;
}

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

.card-header-premium {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-header-premium i { color: var(--primary); font-size: 1rem; }

.card-body-premium { padding: 1.25rem; }

/* 表单 */
.form-label-premium {
    font-weight: 400;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.form-label-premium .required { color: var(--danger); }

.form-control-premium,
.form-select-premium {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: var(--transition);
    width: 100%;
    line-height: 1.5;
}

.form-control-premium:hover,
.form-select-premium:hover { border-color: var(--border-strong); }

.form-control-premium:focus,
.form-select-premium:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 82, 217, 0.1);
    outline: none;
}

.form-control-premium::placeholder { color: var(--text-muted); }
.form-control-premium[readonly] { background: var(--bg-tertiary); color: var(--text-secondary); }

.form-text-premium {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* 按钮 */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 400;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.5;
}

.btn-primary-premium {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-primary-premium:hover { background: var(--primary-light); border-color: var(--primary-light); color: #fff; }
.btn-primary-premium:active { background: var(--primary-dark); }

.btn-outline-premium {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-strong);
}
.btn-outline-premium:hover { color: var(--primary); border-color: var(--primary); }

.btn-secondary-premium {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-strong);
}
.btn-secondary-premium:hover { color: var(--primary); border-color: var(--primary); }

.btn-lg-premium { padding: 0.625rem 1.5rem; font-size: 0.9375rem; font-weight: 500; }
.btn-block-premium { width: 100%; }

/* 步骤指示器 */
.step-indicator-premium {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1.5rem 0 2rem;
    padding: 1rem 1.25rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.step-premium { display: flex; align-items: center; gap: 0.5rem; }

.step-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: 0.8125rem;
    background: var(--bg-primary);
    color: var(--text-muted);
    border: 1px solid var(--border-strong);
    transition: var(--transition);
}

.step-premium.active .step-number {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.step-premium.completed .step-number {
    background: var(--primary-weak);
    color: var(--primary);
    border-color: var(--primary);
    font-size: 0;
}
.step-premium.completed .step-number::after { content: '\2713'; font-size: 0.875rem; }

.step-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    white-space: nowrap;
}
.step-premium.active .step-label { color: var(--text-primary); font-weight: 500; }
.step-premium.completed .step-label { color: var(--text-secondary); }

.step-line {
    width: 48px;
    height: 1px;
    background: var(--border-strong);
    margin: 0 0.75rem;
}
.step-line.completed { background: var(--primary); }

/* 选择卡片 */
.type-card-premium {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    position: relative;
}
.type-card-premium:hover { border-color: var(--primary); box-shadow: var(--shadow-md); }
.type-card-premium.selected {
    border-color: var(--primary);
    background: var(--primary-weak);
}

.type-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--primary-weak);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 1.25rem;
    color: var(--primary);
}

.type-card-premium h5, .type-card-premium h6 {
    font-size: 0.9375rem;
    font-weight: 500;
    margin: 0 0 0.25rem;
    color: var(--text-primary);
}
.type-card-premium p { font-size: 0.8125rem; color: var(--text-muted); margin: 0; }

.type-badge {
    position: absolute;
    top: 0.625rem;
    right: 0.625rem;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6875rem;
    opacity: 0;
    transition: var(--transition);
}
.type-card-premium.selected .type-badge { opacity: 1; }

/* 上传区 */
.upload-area-premium {
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
}
.upload-area-premium:hover { border-color: var(--primary); background: var(--primary-weak); }

.upload-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.625rem;
    color: var(--primary);
    font-size: 1.125rem;
}
.upload-text { font-size: 0.8125rem; color: var(--text-secondary); }
.upload-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }

.upload-preview-premium {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    position: relative;
}
.upload-preview-premium img {
    max-width: 100%;
    max-height: 110px;
    border-radius: var(--radius-md);
    object-fit: contain;
}
.upload-file-name { font-size: 0.8125rem; color: var(--text-secondary); }
.upload-remove { font-size: 0.8125rem; color: var(--danger); cursor: pointer; }
.upload-remove:hover { text-decoration: underline; }

/* 徽章 */
.badge-premium {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 400;
    border-radius: var(--radius-sm);
    line-height: 1.5;
}
.badge-primary-premium { background: var(--primary-weak); color: var(--primary); }
.badge-success-premium { background: #e8f8f2; color: var(--success); }
.badge-warning-premium { background: #fdf2e9; color: var(--warning); }
.badge-danger-premium { background: #fbece9; color: var(--danger); }
.badge-info-premium { background: var(--primary-weak); color: var(--primary); }

/* 表格 */
.table-premium { width: 100%; border-collapse: separate; border-spacing: 0; }
.table-premium th {
    background: var(--bg-tertiary);
    font-weight: 500;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    padding: 0.625rem 0.875rem;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    text-align: left;
}
.table-premium td {
    padding: 0.625rem 0.875rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-primary);
    vertical-align: middle;
}
.table-premium tr:last-child td { border-bottom: none; }
.table-premium tr:hover td { background: var(--bg-tertiary); }

/* 侧边栏 */
.sidebar-premium {
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    min-height: 100vh;
    padding: 1rem 0;
    width: 232px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    transition: var(--transition);
}
.sidebar-brand {
    padding: 0 1.25rem 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.75rem;
}
.sidebar-brand h5 { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin: 0; }

.sidebar-nav { padding: 0 0.625rem; }
.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
    margin-bottom: 0.125rem;
}
.sidebar-nav-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.sidebar-nav-item.active { background: var(--primary-weak); color: var(--primary); font-weight: 500; }
.sidebar-nav-item i { font-size: 1.0625rem; width: 20px; text-align: center; }

/* 主内容区 */
.main-content-premium {
    margin-left: 232px;
    flex: 1 1 auto;
    min-width: 0;
    padding: 1.5rem 1.75rem;
    min-height: 100vh;
    background: var(--bg-secondary);
}
.page-header-premium { margin-bottom: 1.25rem; }
.page-title-premium { font-size: 1.25rem; font-weight: 600; color: var(--text-primary); margin: 0 0 0.25rem; }
.page-subtitle-premium { font-size: 0.875rem; color: var(--text-muted); margin: 0; }

/* 信息卡片 */
.info-card-premium {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.125rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.info-icon {
    width: 42px; height: 42px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.125rem; flex-shrink: 0;
}
.info-icon-primary { background: var(--primary-weak); color: var(--primary); }
.info-icon-success { background: #e8f8f2; color: var(--success); }
.info-icon-warning { background: #fdf2e9; color: var(--warning); }
.info-icon-danger { background: #fbece9; color: var(--danger); }
.info-content h6 { font-size: 0.8125rem; font-weight: 400; color: var(--text-muted); margin: 0 0 0.25rem; }
.info-content h3 { font-size: 1.375rem; font-weight: 600; color: var(--text-primary); margin: 0; }

/* 复选/单选 */
.form-check-premium {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0;
    cursor: pointer;
}
.form-check-premium input[type="checkbox"],
.form-check-premium input[type="radio"] {
    width: 16px; height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}
.form-check-premium label, .form-check-premium span { font-size: 0.875rem; color: var(--text-primary); cursor: pointer; margin: 0; }

/* 费率 */
.rate-display-premium { display: inline-flex; align-items: baseline; gap: 0.125rem; }
.rate-value { font-size: 1.125rem; font-weight: 600; color: var(--primary); }
.rate-unit { font-size: 0.8125rem; color: var(--text-muted); }

/* 提示框 */
.alert-premium {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.5;
    border: 1px solid transparent;
}
.alert-info-premium { background: var(--primary-weak); color: var(--primary-dark); border-color: #c5d8fa; }
.alert-success-premium { background: #e8f8f2; color: #04663f; border-color: #b5e8d5; }
.alert-warning-premium { background: #fdf2e9; color: #9c4d11; border-color: #f7d4b3; }
.alert-danger-premium { background: #fbece9; color: #9c2f2a; border-color: #f3c4bf; }
.alert-premium i { font-size: 1rem; margin-top: 0.0625rem; flex-shrink: 0; }

/* 动画（克制：仅淡入，无上浮/脉冲） */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.animate-fadeInUp, .animate-fadeIn { animation: fadeIn 0.2s ease-out; }

/* 加载 */
.loading-spinner {
    width: 16px; height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }
.btn-loading { pointer-events: none; opacity: 0.7; }

/* 响应式 */
@media (max-width: 992px) {
    .sidebar-premium { transform: translateX(-100%); }
    .sidebar-premium.show { transform: translateX(0); }
    .main-content-premium { margin-left: 0; }
    .step-line { width: 28px; }
}
@media (max-width: 768px) {
    .step-indicator-premium { flex-wrap: wrap; gap: 0.5rem; }
    .step-label { display: none; }
    .step-line { display: none; }
}

/* 工具类 */
.text-premium-primary { color: var(--primary); }
.text-premium-secondary { color: var(--text-secondary); }
.text-premium-muted { color: var(--text-muted); }
.text-premium-success { color: var(--success); }
.text-premium-warning { color: var(--warning); }
.text-premium-danger { color: var(--danger); }
.bg-premium-primary { background-color: var(--primary); }
.bg-premium-secondary { background-color: var(--bg-secondary); }
.bg-premium-tertiary { background-color: var(--bg-tertiary); }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-sm { font-size: 0.8125rem; }
.fs-md { font-size: 0.875rem; }
.fs-lg { font-size: 1.0625rem; }
.rounded-premium { border-radius: var(--radius-md); }
.rounded-lg-premium { border-radius: var(--radius-lg); }
.rounded-xl-premium { border-radius: var(--radius-xl); }
.shadow-premium { box-shadow: var(--shadow-md); }
.shadow-lg-premium { box-shadow: var(--shadow-lg); }
.transition-premium { transition: var(--transition); }
.overflow-hidden { overflow: hidden; }