/* custom.css - 页面特有样式（Bootstrap未覆盖的部分） */
/* 所有颜色使用 Bootstrap CSS 变量，不写任何硬编码颜色值 */

/* === body 全高 flex 布局（撑满视口 + 页脚沉底） === */
html, body {
    height: 100%;
}
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* === 用户后台统一布局 === */
.user-container {
    max-width: 1320px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
    width: 100%;
}

/* === 用户后台导航栏样式 === */
.user-top-bar,
.user-navbar {
    background-color: var(--bs-body-bg);
    width: 100%;
}

.user-top-bar .user-container,
.user-navbar .user-container {
    max-width: 1320px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
    width: 100%;
}

/* 确保navbar的collapse区域也正确对齐 */
.user-navbar .collapse {
    width: 100%;
}

/* 确保navbar在移动端也能正确显示 */
@media (max-width: 1200px) {
    .user-top-bar .user-container,
    .user-navbar .user-container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
}

/* === 用户顶部管理栏 === */
.user-top-bar {
    font-size: 0.875rem;
}

.user-top-bar .avatar-circle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--bs-primary-bg-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bs-primary);
}

.user-top-bar .btn-link {
    color: var(--bs-body-color);
}

.user-top-bar .btn-link:hover {
    color: var(--bs-primary);
    text-decoration: none;
}

/* === PayPal 风格悬停导航菜单 === */
.navbar-nav .nav-item.dropdown:hover .dropdown-menu {
    display: block;
    margin-top: 0;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.navbar-nav .nav-item.dropdown .dropdown-menu {
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-5px);
    transition: all 0.2s ease;
    margin-top: 0.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--bs-border-color);
}

.navbar-nav .nav-item.dropdown .dropdown-item {
    padding: 0.625rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.15s ease;
}

.navbar-nav .nav-item.dropdown .dropdown-item:hover {
    background-color: var(--bs-secondary-bg);
}

.navbar-nav .nav-item.dropdown .dropdown-divider {
    margin: 0.5rem 0;
}

.user-main {
    flex: 1 0 auto;
    padding-top: 1.5rem;
    padding-bottom: 2rem;
}

/* 统一页面标题区域 */
.page-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-header-row h1,
.page-header-row h2 {
    margin-bottom: 0;
}

.page-subtitle {
    color: var(--bs-secondary-color);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* === 统计数据块（Stripe/Vercel风格） === */
.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--bs-body-color);
    letter-spacing: -0.5px;
    line-height: 1.2;
}
.stat-label {
    font-size: 0.75rem;
    color: var(--bs-secondary-color);
    font-weight: 600;
    margin-top: 0.25rem;
}
.stat-block {
    padding: 1rem 0.5rem;
    border-right: 1px solid var(--bs-border-color);
}
.stat-block:last-child {
    border-right: none;
}
.stat-row {
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    overflow: hidden;
}
@media (max-width: 767.98px) {
    .stat-block:nth-child(2) {
        border-right: none;
    }
    .stat-block:nth-child(3) {
        border-right: none;
    }
}

/* === 步骤指示器 === */
.step-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.78rem;
    color: var(--bs-secondary-color);
}
.step-dot {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.72rem;
    background: var(--bs-tertiary-bg);
    color: var(--bs-secondary-color);
    border: 1px solid var(--bs-border-color);
}
.step-dot.active {
    background: var(--bs-primary);
    color: var(--bs-primary-bg);
    border-color: var(--bs-primary);
}
.step-dot.done {
    background: var(--bs-success);
    color: var(--bs-primary-bg);
    border-color: var(--bs-success);
}
.step-line {
    width: 32px;
    height: 2px;
    background: var(--bs-border-color);
    border-radius: 1px;
}

/* === QR Tab 切换 === */
.qr-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.5rem;
    border-radius: var(--bs-border-radius);
    overflow: hidden;
    border: 1px solid var(--bs-border-color);
    background: var(--bs-tertiary-bg);
}
.qr-tab {
    flex: 1;
    padding: 12px;
    text-align: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    border: none;
    background: transparent;
    color: var(--bs-secondary-color);
    transition: all 0.25s;
    text-decoration: none;
}
.qr-tab.active {
    background: var(--bs-primary);
    color: var(--bs-primary-bg);
}
.qr-tab:hover:not(.active) {
    background: var(--bs-secondary-bg);
    color: var(--bs-body-color);
}

/* === 金额大字显示 === */
.amount-display {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--bs-primary);
    letter-spacing: -0.5px;
}

/* === 等级 Badge 颜色变体 === */
.tier-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.tier-badge.free { background: var(--bs-tertiary-bg); color: var(--bs-secondary-color); }
.tier-badge.standard { background: var(--bs-primary-bg-subtle); color: var(--bs-primary); }
.tier-badge.merchant { background: var(--bs-info-bg-subtle); color: var(--bs-info); }
.tier-badge.vip { background: var(--bs-warning-bg-subtle); color: var(--bs-warning); }

/* === 钱包日志条目 === */
.wallet-log-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--bs-border-color);
}
.wallet-log-item:last-child { border-bottom: none; }
.wallet-log-type { font-weight: 600; font-size: 0.85rem; }
.wallet-log-amount.positive { color: var(--bs-success); }
.wallet-log-amount.negative { color: var(--bs-danger); }

/* === 查询栏 === */
.lookup-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bs-tertiary-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    max-width: 600px;
    transition: border-color 0.2s ease;
}
.lookup-bar:hover { border-color: var(--bs-primary); }
.lookup-bar i { font-size: 1.25rem; color: var(--bs-primary); flex-shrink: 0; }
.lookup-bar input {
    flex: 1;
    min-width: 0;
    padding: 0.75rem;
    border: none;
    background: transparent;
    color: var(--bs-body-color);
    font-size: 0.9rem;
    outline: none;
    border-radius: var(--bs-border-radius);
}
.lookup-bar input::placeholder { color: var(--bs-secondary-color); }

/* === 统计网格 === */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }

/* === 服务网格 === */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }

/* === 服务卡片 === */
.service-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    background: var(--bs-tertiary-bg);
    border-radius: var(--bs-border-radius);
    text-decoration: none !important;
    color: var(--bs-body-color);
    transition: all 0.2s;
}
.service-card:hover {
    background: var(--bs-secondary-bg);
    transform: translateY(-2px);
}
.service-card i {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--bs-primary);
}
.service-card-title {
    font-size: 0.875rem;
    font-weight: 600;
}
.service-card-desc {
    font-size: 0.75rem;
    color: var(--bs-secondary-color);
    margin-top: 0.25rem;
    text-align: center;
}

/* === 数据卡片 === */
.data-card {
    background: var(--bs-tertiary-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    padding: 1rem;
}
.data-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.data-card-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--bs-body-color);
}
.data-card-link {
    font-size: 0.75rem;
    color: var(--bs-primary);
    text-decoration: none;
}
.data-card-link:hover {
    text-decoration: underline;
}

/* === 操作按钮组 === */
.action-btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--bs-border-radius);
    font-size: 0.8125rem;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.2s;
}
.action-btn.primary {
    background: var(--bs-primary);
    color: var(--bs-primary-bg);
}
.action-btn.primary:hover {
    background: var(--bs-primary);
    opacity: 0.9;
}
.action-btn.secondary {
    background: var(--bs-secondary-bg);
    color: var(--bs-body-color);
    border: 1px solid var(--bs-border-color);
}
.action-btn.secondary:hover {
    background: var(--bs-tertiary-bg);
}
.action-btn.danger {
    background: var(--bs-danger);
    color: var(--bs-danger-bg);
}
.action-btn.danger:hover {
    background: var(--bs-danger);
    opacity: 0.9;
}

/* === 状态标签 === */
.status-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.1875rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}
.status-tag.pending { background: rgba(var(--bs-warning-rgb), 0.15); color: var(--bs-warning); }
.status-tag.approved { background: rgba(var(--bs-success-rgb), 0.15); color: var(--bs-success); }
.status-tag.rejected { background: rgba(var(--bs-danger-rgb), 0.15); color: var(--bs-danger); }
.status-tag.active { background: rgba(var(--bs-primary-rgb), 0.15); color: var(--bs-primary); }
.status-tag.inactive { background: var(--bs-tertiary-bg); color: var(--bs-secondary-color); }

/* === 表格增强 === */
.table-compact th,
.table-compact td {
    padding: 0.375rem 0.5rem;
    font-size: 0.8125rem;
}
.table-hover tbody tr:hover {
    background-color: var(--bs-secondary-bg);
}

/* === 空状态 === */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    color: var(--bs-secondary-color);
}
.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}
.empty-state-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--bs-body-color);
}
.empty-state-desc {
    font-size: 0.8125rem;
    text-align: center;
}

/* === 模态框增强 === */
/* 确保模态框 z-index 高于 sticky 导航栏 (1080) */
.modal {
    z-index: 1095 !important;
}
.modal-backdrop {
    z-index: 1090 !important;
}
.modal-header {
    background: var(--bs-tertiary-bg);
    border-bottom: 1px solid var(--bs-border-color);
}
.modal-footer {
    background: var(--bs-tertiary-bg);
    border-top: 1px solid var(--bs-border-color);
}

/* === 表单增强 === */
.form-control:focus,
.form-select:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.25rem rgba(var(--bs-primary-rgb), 0.25);
}

/* === 分页增强 === */
.page-link {
    color: var(--bs-body-color);
    background: var(--bs-tertiary-bg);
    border-color: var(--bs-border-color);
}
.page-link:hover {
    color: var(--bs-primary);
    background: var(--bs-secondary-bg);
    border-color: var(--bs-border-color);
}
.page-item.active .page-link {
    background: var(--bs-primary);
    border-color: var(--bs-primary);
}

/* === 响应式 === */
@media (max-width: 576px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .service-grid { grid-template-columns: 1fr; }
    .stat-value { font-size: 1.4rem; }
    .action-btn-group { justify-content: center; }
}

/* === 滚动条样式 === */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bs-tertiary-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--bs-border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--bs-secondary-color);
}

/* === From user/api_docs.php === */
.status-breathe {
        width: 10px; height: 10px; border-radius: 50%;
        background: var(--bs-info);
        box-shadow: 0 0 8px rgba(var(--bs-info-rgb), 0.6);
        animation: statusBreathe 2s ease-in-out infinite;
        display: inline-block; flex-shrink: 0;
    }
    @keyframes statusBreathe {
        0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 8px rgba(var(--bs-info-rgb), 0.6); }
        50% { opacity: 0.7; transform: scale(1.2); box-shadow: 0 0 16px rgba(var(--bs-info-rgb), 0.9); }
    }


/* === From user/api_security.php / api_stats.php / dashboard.php === */
/* .user-main padding override merged into existing .user-main above */


/* === From user/dealer_purchase.php === */
.selectable-card {
    border: 2px solid transparent;
    transition: all 0.2s ease;
}
.selectable-card:hover {
    border-color: var(--bs-primary);
    background-color: var(--bs-primary-50);
}
.selectable-card.selected {
    border-color: var(--bs-primary);
    background-color: var(--bs-primary-50);
    box-shadow: 0 0 0 4px rgba(var(--bs-primary-rgb), 0.1);
}
.cursor-pointer {
    cursor: pointer;
}


/* === From user/pay.php === */
.step-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}
.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.step-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bs-tertiary-bg);
    border: 2px solid var(--bs-border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.8rem;
    color: var(--bs-secondary-color);
    transition: all 0.2s;
}
.step-dot.active {
    background: var(--bs-primary);
    border-color: var(--bs-primary);
    color: white;
}
.step-line {
    width: 3rem;
    height: 2px;
    background: var(--bs-border-color);
}
.step-label {
    font-size: 0.75rem;
    color: var(--bs-secondary-color);
    margin-top: 0.25rem;
}
.grid {
    display: grid;
}
.grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}
.gap-2 {
    gap: 0.5rem;
}


/* === From user/submit_message.php === */
input[type="file"].modern-input {
    padding: 0.75rem 1rem;
}
input[type="file"].modern-input::file-selector-button {
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    color: var(--bs-white);
    border: none;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    margin-right: 1rem;
    transition: all 0.2s;
}
input[type="file"].modern-input::file-selector-button:hover {
    background: linear-gradient(135deg, var(--bs-primary), rgba(var(--bs-primary-rgb), 0.85));
    box-shadow: 0 0 12px rgba(var(--bs-primary-rgb), 0.4);
}

/* ============================================================
   科技感升级样式 (homepage-tech-redesign)
   参考 Vercel / Stripe / Linear / Supabase 设计语言
   ============================================================ */

/* === 科技感 Hero 区域 === */
.tech-hero {
    padding: 5rem 0;
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(180deg, var(--bs-tertiary-bg) 0%, var(--bs-body-bg) 100%);
}

[data-bs-theme="dark"] .tech-hero {
    background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
}

/* === 渐变文字 === */
.gradient-text {
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 降级: 不支持 background-clip:text 的浏览器 */
@supports not (-webkit-background-clip: text) {
    .gradient-text {
        color: var(--bs-primary);
        -webkit-text-fill-color: initial;
    }
}

/* === 搜索框聚焦渐变边框 === */
.search-group {
    border-radius: var(--bs-border-radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
    border: 2px solid var(--bs-border-color);
}

.search-group:focus-within {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 3px rgba(var(--bs-primary-rgb), 0.15), 0 4px 16px rgba(0, 0, 0, 0.1);
}

.search-group .input-group-text {
    background: var(--bs-tertiary-bg);
    border: none;
    color: var(--bs-secondary-color);
}

.search-group .form-control,
.search-group .form-select {
    border: none;
    box-shadow: none;
}

.search-group .form-control:focus,
.search-group .form-select:focus {
    box-shadow: none;
}

/* === 半透明导航栏 === */
.tech-navbar {
    background-color: rgba(var(--bs-body-bg-rgb, 255, 255, 255), 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(var(--bs-border-color-rgb, 0), 0.1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 1030;
}

/* 降级: 不支持 backdrop-filter */
@supports not (backdrop-filter: blur(12px)) {
    .tech-navbar {
        background-color: var(--bs-body-bg);
    }
}

/* === 玻璃态卡片 === */
.glass-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: rgba(var(--bs-body-bg-rgb, 255, 255, 255), 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(var(--bs-border-color-rgb, 0), 0.15);
    border-radius: 12px;
    text-decoration: none !important;
    color: var(--bs-body-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* 降级: 不支持 backdrop-filter */
@supports not (backdrop-filter: blur(12px)) {
    .glass-card {
        background: var(--bs-tertiary-bg);
    }
}

.glass-card i {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--bs-primary);
}

.glass-card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.glass-card-desc {
    font-size: 0.8125rem;
    color: var(--bs-secondary-color);
    text-align: center;
    margin-top: 0.25rem;
}

/* === 卡片悬停微动画 === */
.card-hover-float:hover {
    opacity: 0.85;
}

/* 减弱动画偏好 */
@media (prefers-reduced-motion: reduce) {
    .card-hover-float:hover {
        transform: none;
    }
}

/* === API 端点卡片 === */
.api-card {
    background: var(--bs-tertiary-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: 12px;
    padding: 1.25rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.api-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.api-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.api-method {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.api-method-post {
    background: rgba(var(--bs-success-rgb), 0.15);
    color: var(--bs-success);
}

.api-method-get {
    background: rgba(var(--bs-primary-rgb), 0.15);
    color: var(--bs-primary);
}

.api-path {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--bs-body-color);
}

.api-card-desc {
    font-size: 0.8125rem;
    color: var(--bs-secondary-color);
    margin-bottom: 1rem;
}

/* === 代码块 === */
.code-block {
    position: relative;
    background: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: 8px;
    overflow: hidden;
}

.code-block pre {
    margin: 0;
    padding: 1rem;
    overflow-x: auto;
    font-size: 0.8rem;
    line-height: 1.5;
    position: relative;
}

.code-block code {
    color: var(--bs-body-color);
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.code-block pre > .code-lang {
    display: none;
}

.code-block pre > .code-lang[style*="block"] {
    display: block !important;
}

.code-copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--bs-tertiary-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: 6px;
    padding: 0.35rem 0.5rem;
    cursor: pointer;
    color: var(--bs-secondary-color);
    font-size: 0.85rem;
    transition: all 0.15s ease;
    z-index: 1;
}

.code-copy-btn:hover {
    background: var(--bs-secondary-bg);
    color: var(--bs-body-color);
}

.code-copy-btn.copied {
    color: var(--bs-success);
}

/* === CTA 渐变背景 === */
.tech-cta-bg {
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    color: var(--bs-white);
}

/* === 渐变按钮 === */
.btn-gradient {
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    color: var(--bs-white);
    border: none;
    font-weight: 600;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn-gradient:hover {
    opacity: 0.9;
    color: var(--bs-white);
    transform: translateY(-1px);
}

/* === IoT Device Styles === */
.device-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
@media (max-width: 1199.98px) {
    .device-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 767.98px) {
    .device-grid {
        grid-template-columns: 1fr;
    }
}

.device-card {
    transition: box-shadow 0.2s ease, transform 0.15s ease;
}
.device-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transform: translateY(-1px);
}

.device-card .card-footer {
    border-top: 1px solid var(--bs-border-color);
    padding: 0.75rem 1rem;
}

.device-icon-box {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(var(--bs-primary-rgb), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.device-icon-box i {
    font-size: 1.25rem;
}

.tunnel-mini {
    background: var(--bs-tertiary-bg);
    border-radius: 8px;
    padding: 0.625rem 0.75rem;
}

/* === Empty State === */
.empty-section {
    padding: 2rem 0;
}
.empty-hero {
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, rgba(var(--bs-primary-rgb), 0.04), rgba(var(--bs-primary-rgb), 0.01));
    border-radius: var(--bs-border-radius-lg);
}
.empty-icon-circle {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(var(--bs-primary-rgb), 0.1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}
.empty-icon-circle i {
    font-size: 2.25rem;
    color: var(--bs-primary);
}

.steps-row {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.step-card {
    text-align: center;
    padding: 1.25rem 1rem;
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    background: var(--bs-tertiary-bg);
    height: 100%;
}
.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bs-primary);
    color: #fff;
    font-weight: 700;
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
}

/* === Service Link Cards (horizontal row style) === */
.service-section {
    /* spacing only, see .mt-4.pt-3.border-top */
}
.service-link-card {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    border-radius: var(--bs-border-radius);
    border: 1px solid var(--bs-border-color);
    text-decoration: none !important;
    color: var(--bs-body-color);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.service-link-card:hover {
    border-color: var(--bs-primary);
    box-shadow: 0 2px 8px rgba(var(--bs-primary-rgb), 0.1);
    color: var(--bs-body-color);
}
.service-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* === Quick Nav Pills === */
.quick-nav {
    display: flex;
    gap: 0.375rem;
    flex-wrap: wrap;
}
.quick-nav-item {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--bs-secondary-color);
    background: var(--bs-tertiary-bg);
    border: 1px solid var(--bs-border-color);
    text-decoration: none;
    transition: all 0.2s;
}
.quick-nav-item:hover {
    color: var(--bs-body-color);
    background: var(--bs-secondary-bg);
    border-color: var(--bs-secondary-color);
}
.quick-nav-item.active {
    color: var(--bs-primary);
    background: rgba(var(--bs-primary-rgb), 0.1);
    border-color: var(--bs-primary);
    font-weight: 600;
}
.quick-nav-item.active:hover {
    background: rgba(var(--bs-primary-rgb), 0.15);
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--bs-border-color);
}
.info-row:last-child {
    border-bottom: none;
}
.info-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--bs-secondary-color);
}
.info-value {
    font-size: 0.875rem;
    color: var(--bs-body-color);
}

.status-tag.approved {
    background: rgba(var(--bs-success-rgb), 0.15);
    color: var(--bs-success);
}

.selectable-card {
    border: 2px solid var(--bs-border-color);
    transition: all 0.2s ease;
    cursor: pointer;
}
.selectable-card:hover {
    border-color: var(--bs-primary);
    background-color: rgba(var(--bs-primary-rgb), 0.05);
}
.selectable-card.selected {
    border-color: var(--bs-primary);
    background-color: rgba(var(--bs-primary-rgb), 0.08);
    box-shadow: 0 0 0 4px rgba(var(--bs-primary-rgb), 0.1);
}
.selectable-card .card-body {
    text-align: center;
}
.selectable-card .selectable-icon {
    font-size: 2rem;
    color: var(--bs-primary);
    margin-bottom: 0.5rem;
}
.selectable-card .selectable-label {
    font-weight: 600;
    font-size: 0.9rem;
}
.selectable-card.selected .selectable-icon {
    color: var(--bs-primary);
}

@media (max-width: 767.98px) {
    .info-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}

/* === IoT Panel Management Styles === */
.iot-toast {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tunnel-table td,
.tunnel-table th {
    vertical-align: middle;
}

@media (max-width: 767.98px) {
    .modal-dialog {
        margin: 0.5rem;
    }
}