/* ============================================================
   浅色磨砂玻璃 UI 规范 (Light Glassmorphism)
   按照 UI需求单 精确实现
   ============================================================ */

/* --- CSS 变量定义 --- */
:root {
    /* 配色 */
    --primary-blue: #3355FF;
    --primary-purple: #6D4BFF;
    --primary-cyan: #22C3E6;
    --bg-start: #F1F5FC;
    --bg-end: #EEF3FB;
    --text-primary: #16243F;
    --text-secondary: #3E4F70;
    --text-muted: #7C8BA8;
    --divider: #C4D0E8;
    
    /* 主渐变 */
    --gradient-main: linear-gradient(135deg, #3355FF 0%, #6D4BFF 52%, #22C3E6 100%);
    
    /* 卡片 */
    --glass-bg: linear-gradient(180deg, rgba(255,255,255,0.86) 0%, rgba(255,255,255,0.66) 100%);
    --glass-blur: blur(24px) saturate(180%);
    --glass-radius: 24px;
    --glass-radius-sm: 18px;
    --ring-inner: inset 0 1px 0 #fff;
    --ring-outer: 0 0 0 1px rgba(120,155,215,.16);
    --shadow-glass: 0 24px 50px -30px rgba(28,52,120,.38);
    --card-highlight: 
        radial-gradient(ellipse 300px 200px at 10% 0%, rgba(51,85,255,0.06), transparent 70%),
        radial-gradient(ellipse 250px 180px at 90% 0%, rgba(109,75,255,0.05), transparent 70%);
    
    /* 控件 */
    --input-height: 56px;
    --input-radius: 15px;
    --input-bg: rgba(255,255,255,0.80);
    --input-ring: rgba(203,217,238,.95);
    --focus-ring: 0 0 0 4px rgba(51,85,255,.11);
    --btn-height: 54px;
    --btn-radius: 15px;
    --btn-shadow: 0 12px 26px -12px rgba(51,85,255,.75);
}

/* --- 背景：四层叠加，固定不滚动 --- */
body {
    background: var(--bg-start);
    background-image:
        /* 第1层：底色竖向渐变 */
        linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 100%),
        /* 第2层：4个光斑（蓝/紫/青） */
        radial-gradient(ellipse 680px 560px at 12% 18%, rgba(51,85,255,0.42), transparent 70%),
        radial-gradient(ellipse 620px 620px at 88% 12%, rgba(109,75,255,0.38), transparent 70%),
        radial-gradient(ellipse 760px 580px at 78% 82%, rgba(34,195,230,0.34), transparent 70%),
        radial-gradient(ellipse 560px 480px at 18% 78%, rgba(109,75,255,0.30), transparent 70%),
        /* 第3层：64px网格 */
        linear-gradient(rgba(120,155,215,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(120,155,215,.055) 1px, transparent 1px),
        /* 第4层：噪点 */
        url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 100% 100%, auto, auto, auto, auto, 64px 64px, 64px 64px, 256px 256px;
    background-attachment: fixed, fixed, fixed, fixed, fixed, fixed, fixed, fixed;
    background-repeat: no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, repeat, repeat, repeat;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    color: var(--text-primary);
}

/* 噪点不透明度单独控制（通过伪元素不行，用body的opacity会影响内容，所以噪点直接在上面的SVG中通过滤镜透明度控制） */

/* --- 文字色三级 --- */
body, p, span, div, li, td, th, label {
    color: var(--text-primary);
}

.text-secondary, .muted, .desc, .sub-text, .text-muted {
    color: var(--text-secondary) !important;
}

.hint, .tip, .small-text, .form-text, .text-muted-2 {
    color: var(--text-muted) !important;
}

/* --- 主渐变文字 --- */
.gradient-text, .gradient-title {
    background: var(--gradient-main) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}

/* --- 卡片：白玻璃 + 双环描边 + 大阴影 + 厚度感 --- */
.card, .product-card, .price-card, .feature-card, .info-card, .panel, .box, .content-box, .widget, .module, .section-card,
.block, .block-rounded, .glass-card {
    background: var(--card-highlight), var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border-radius: var(--glass-radius) !important;
    border: none !important;
    box-shadow: var(--ring-inner), var(--ring-outer), var(--shadow-glass) !important;
    transition: all 0.18s ease !important;
    position: relative;
    overflow: hidden;
}

/* 小卡片 */
.card-sm, .widget-sm, .stat-card {
    border-radius: var(--glass-radius-sm) !important;
}

/* 卡片悬停：上浮1px，投影加深 */
.card:hover, .product-card:hover, .price-card:hover, .feature-card:hover,
.block:hover, .glass-card:hover {
    transform: translateY(-1px) !important;
    box-shadow: var(--ring-inner), var(--ring-outer), 0 28px 56px -28px rgba(28,52,120,.45) !important;
}

/* --- 顶部导航玻璃态 --- */
.nav-wrap, .header, .topbar, .navbar, .nav-container {
    background: linear-gradient(180deg, rgba(255,255,255,0.88), rgba(255,255,255,0.68)) !important;
    backdrop-filter: blur(20px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
    border-bottom: 1px solid rgba(120,155,215,.16) !important;
    box-shadow: 0 8px 30px -15px rgba(28,52,120,.25) !important;
}

/* --- 下拉菜单玻璃态 --- */
.dropdown-menu, .submenu, .popover, .dropdown {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border-radius: var(--glass-radius-sm) !important;
    border: none !important;
    box-shadow: var(--ring-inner), var(--ring-outer), 0 20px 45px -20px rgba(28,52,120,.35) !important;
}

/* --- 输入框：高56px，圆角15px，白80%，内描边 --- */
input, select, textarea, .input, .form-control, .form-select {
    height: var(--input-height) !important;
    padding: 0 18px !important;
    background: var(--input-bg) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border-radius: var(--input-radius) !important;
    border: none !important;
    box-shadow: inset 0 0 0 1.5px var(--input-ring) !important;
    color: var(--text-primary) !important;
    font-size: 15px !important;
    transition: all 0.18s ease !important;
}

textarea {
    height: auto !important;
    padding: 14px 18px !important;
    line-height: 1.6;
}

/* 输入框悬停 */
input:hover, select:hover, textarea:hover, .form-control:hover {
    box-shadow: inset 0 0 0 1.5px rgba(51,85,255,0.4) !important;
}

/* 输入框聚焦态：1.5px主蓝 + 外圈光晕 */
input:focus, select:focus, textarea:focus, .form-control:focus, .form-select:focus {
    background: rgba(255,255,255,0.95) !important;
    box-shadow: inset 0 0 0 1.5px var(--primary-blue), var(--focus-ring) !important;
    outline: none !important;
}

/* --- 主按钮：高54px，圆角15px，主渐变 --- */
.btn-primary, .btn-gradient, .buy-btn, .order-btn, .submit-btn, .btn-lg, button[type="submit"] {
    height: var(--btn-height) !important;
    padding: 0 32px !important;
    background: var(--gradient-main) !important;
    border: none !important;
    border-radius: var(--btn-radius) !important;
    color: #fff !important;
    font-size: 16px !important;
    font-weight: 600 !important;
    box-shadow: var(--btn-shadow) !important;
    transition: all 0.18s ease !important;
    cursor: pointer;
    line-height: var(--btn-height) !important;
}

.btn-primary:hover, .btn-gradient:hover, .buy-btn:hover, .order-btn:hover {
    transform: translateY(-1px) !important;
    box-shadow: 0 16px 32px -10px rgba(51,85,255,.85) !important;
}

/* --- 次按钮：玻璃态 --- */
.btn, .button, .btn-default, .btn-secondary, .btn-sm {
    height: 44px !important;
    padding: 0 20px !important;
    background: linear-gradient(135deg, rgba(255,255,255,0.85), rgba(255,255,255,0.65)) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border-radius: 12px !important;
    border: none !important;
    color: var(--text-secondary) !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    box-shadow: var(--ring-inner), var(--ring-outer) !important;
    transition: all 0.18s ease !important;
    cursor: pointer;
    line-height: 44px !important;
}

.btn:hover, .button:hover, .btn-secondary:hover {
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.8)) !important;
    color: var(--primary-blue) !important;
    transform: translateY(-1px) !important;
    box-shadow: var(--ring-inner), 0 0 0 1px rgba(51,85,255,0.3), 0 10px 24px -12px rgba(28,52,120,.25) !important;
}

/* --- 表格玻璃态 --- */
table, .table {
    background: rgba(255,255,255,0.55) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    border-radius: var(--glass-radius-sm) !important;
    overflow: hidden !important;
    border: none !important;
}

th {
    background: rgba(51,85,255,0.06) !important;
    color: var(--text-primary) !important;
    font-weight: 600 !important;
    border-bottom: 1px solid var(--divider) !important;
}

td {
    border-bottom: 1px solid rgba(196,208,232,0.5) !important;
}

tr:hover td {
    background: rgba(51,85,255,0.04) !important;
}

/* --- 标签/徽章玻璃态 --- */
.badge, .tag, .label, .status {
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    padding: 4px 12px !important;
    font-size: 12px !important;
    font-weight: 500 !important;
    border-radius: 8px !important;
    background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7)) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
    border: none !important;
    box-shadow: var(--ring-inner), var(--ring-outer) !important;
}

/* 状态胶囊：6px圆点 */
.badge::before, .status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* --- 价格高亮 --- */
.price, .amount, .total, .text-price {
    color: var(--primary-blue) !important;
    font-weight: 700 !important;
}

/* --- 链接hover --- */
a:hover {
    color: var(--primary-blue) !important;
}

/* --- 提示条：左侧4px渐变竖条 --- */
.alert, .alert-success, .alert-danger, .alert-warning, .alert-info {
    position: relative !important;
    padding: 14px 20px 14px 24px !important;
    border-radius: 12px !important;
    background: rgba(255,255,255,0.92) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border: none !important;
    box-shadow: var(--ring-inner), var(--ring-outer) !important;
}

.alert::before, .alert-success::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #22c55e, #16a34a);
    border-radius: 4px 0 0 4px;
}

.alert-danger::before {
    background: linear-gradient(180deg, #ef4444, #dc2626) !important;
}

.alert-warning::before {
    background: linear-gradient(180deg, #f59e0b, #d97706) !important;
}

.alert-info::before {
    background: var(--gradient-main) !important;
}

/* --- 分隔线 --- */
hr, .divider, .border-bottom {
    border-color: var(--divider) !important;
}

/* --- 滚动条美化 --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(241,245,252,0.5);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-main);
    border-radius: 4px;
    opacity: 0.6;
}

::-webkit-scrollbar-thumb:hover {
    opacity: 0.9;
}

/* --- 响应式 --- */
@media (min-width: 1200px) {
    .container, .content, .main-container {
        max-width: 1200px !important;
        margin: 0 auto !important;
    }
    .card-centered, .login-card, .form-card {
        max-width: 620px !important;
        margin-left: auto !important;
        margin-right: auto !important;
    }
}

@media (max-width: 1199px) and (min-width: 768px) {
    .container, .content {
        padding-left: 24px !important;
        padding-right: 24px !important;
    }
}

@media (max-width: 767px) {
    body {
        padding-left: 14px !important;
        padding-right: 14px !important;
    }
    .card, .product-card, .price-card, .block, .glass-card {
        border-radius: 22px !important;
    }
    input, select, .form-control {
        font-size: 16px !important;
    }
    .table-responsive {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
    }
}

/* --- 降级方案：不支持 backdrop-filter 的浏览器 --- */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .card, .product-card, .price-card, .feature-card, .info-card, .panel, .box, .block, .glass-card,
    .nav-wrap, .header, .dropdown-menu, .alert, .badge {
        background: rgba(255,255,255,0.96) !important;
    }
    input, select, textarea, .form-control {
        background: rgba(255,255,255,0.98) !important;
    }
}

/* --- 玻璃拟态弹窗 --- */
.glass-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(22,36,63,0.45);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.glass-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.glass-modal {
    background: var(--card-highlight), var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--glass-radius);
    border: none;
    box-shadow: var(--ring-inner), var(--ring-outer), 0 32px 64px -24px rgba(28,52,120,.45);
    padding: 32px;
    max-width: 440px;
    width: 90%;
    text-align: center;
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

.glass-modal-overlay.active .glass-modal {
    transform: scale(1) translateY(0);
}

.glass-modal-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
}

.glass-modal-icon.info { background: linear-gradient(135deg, rgba(51,85,255,0.15), rgba(34,195,230,0.15)); color: var(--primary-blue); }
.glass-modal-icon.success { background: linear-gradient(135deg, rgba(34,197,94,0.15), rgba(16,185,129,0.15)); color: #22c55e; }
.glass-modal-icon.warning { background: linear-gradient(135deg, rgba(245,158,11,0.15), rgba(239,68,68,0.15)); color: #f59e0b; }
.glass-modal-icon.error { background: linear-gradient(135deg, rgba(239,68,68,0.15), rgba(245,158,11,0.15)); color: #ef4444; }
.glass-modal-icon.question { background: linear-gradient(135deg, rgba(51,85,255,0.15), rgba(109,75,255,0.15)); color: var(--primary-purple); }

.glass-modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.glass-modal-message {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 28px;
    white-space: pre-line;
}

.glass-modal-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.glass-modal-btn {
    height: 44px;
    padding: 0 28px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s ease;
    border: none;
    min-width: 100px;
    line-height: 44px;
}

.glass-modal-btn.primary {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: var(--btn-shadow);
}

.glass-modal-btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 32px -10px rgba(51,85,255,.85);
}

.glass-modal-btn.secondary {
    background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
    color: var(--text-secondary);
    box-shadow: var(--ring-inner), var(--ring-outer);
}

.glass-modal-btn.secondary:hover {
    background: linear-gradient(135deg, rgba(255,255,255,1), rgba(255,255,255,0.85));
    color: var(--primary-blue);
    transform: translateY(-1px);
}