/* ===== 码支付系统 - Modern SaaS Dashboard ===== */
:root {
    --primary: #1890FF;
    --primary-hover: #40A9FF;
    --primary-bg: rgba(24,144,255,0.1);
    --success: #52C41A;
    --warning: #FAAD14;
    --danger: #FF4D4F;
    --text: #262626;
    --text-secondary: #595959;
    --text-muted: #8C8C8C;
    --bg: #F7F9FC;
    --card-bg: #FFFFFF;
    --border: #F0F0F0;
    --shadow: 0 2px 16px rgba(0,0,0,0.05);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.09);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-pill: 999px;
    --sidebar-width: 240px;
    --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ===== 卡片 ===== */
.glass {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.glass-sidebar {
    background: #FFFFFF;
    border-right: 1px solid var(--border);
}

/* ===== Auth Page ===== */
.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-image: url('../images/login-bg.jpeg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 40px 20px;
}

.auth-container { width: 100%; max-width: 440px; padding: 20px; }

.auth-card { padding: 40px 36px; backdrop-filter: blur(2px); background-color: rgba(255,255,255,0.96); border-radius: 24px; box-shadow: 0 20px 40px -10px rgba(0,0,0,0.15); }

.auth-header { text-align: center; margin-bottom: 28px; }
.auth-header .logo { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 8px; }
.auth-header .logo h2 { font-size: 22px; font-weight: 700; color: var(--text); }
.auth-logo-img { width: 60px; height: 60px; margin: 0 auto 12px; border-radius: 14px; display: block; }
.auth-title { font-size: 24px; font-weight: 700; color: var(--text); text-align: center; margin-bottom: 4px; }
.auth-desc { font-size: 14px; color: var(--text-muted); text-align: center; }
.password-toggle { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; cursor: pointer; padding: 4px; display: flex; align-items: center; }

.auth-tabs { display: flex; gap: 0; margin-bottom: 28px; border-bottom: 1px solid var(--border); }
.auth-tabs .tab { flex: 1; text-align: center; padding: 10px 0; font-size: 14px; color: var(--text-muted); text-decoration: none; border-bottom: 2px solid transparent; transition: all .2s; }
.auth-tabs .tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.auth-tabs .tab:hover { color: var(--primary); }

.auth-form .form-group { margin-bottom: 18px; }
.auth-form label { display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.auth-form .input-wrapper { position: relative; }
.auth-form .input-wrapper .input-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); pointer-events: none; }
.auth-form .input-wrapper input { width: 100%; padding: 11px 42px 11px 38px; border: 1px solid var(--border); border-radius: var(--radius-pill); font-size: 14px; transition: border-color .2s, box-shadow .2s; background: #fff; }
.auth-form .input-wrapper input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }

.captcha-row { display: flex; gap: 10px; }
.captcha-row .captcha-input { flex: 1; padding: 11px 14px; border: 1px solid var(--border); border-radius: var(--radius-pill); font-size: 14px; }
.captcha-row .captcha-input:focus { outline: none; border-color: var(--primary); }
.captcha-img { height: 44px; border-radius: var(--radius-sm); cursor: pointer; border: 1px solid var(--border); }

/* ===== 按钮（Pill-shaped） ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 22px; border: none; border-radius: var(--radius-pill); font-size: 14px; font-weight: 600; cursor: pointer; transition: all .2s; text-decoration: none; line-height: 1.4; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 4px 12px rgba(24,144,255,0.35); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #73D13D; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { background: #FFC53D; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #FF7875; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-secondary); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== App Layout ===== */
.app-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar { width: var(--sidebar-width); display: flex; flex-direction: column; position: fixed; top: 56px; left: 0; bottom: 0; z-index: 100; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 22px 20px 28px; color: var(--text); }
.sidebar-brand span { font-size: 18px; font-weight: 700; }

.sidebar-nav { flex: 1; padding: 0 12px; }
.nav-item { position: relative; display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: var(--radius-sm); color: var(--text-secondary); text-decoration: none; font-size: 14px; transition: all .2s; margin-bottom: 4px; }
.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--primary-bg); color: var(--primary); font-weight: 600; }
.nav-item.active::after { content: ''; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); width: 4px; height: 24px; background: var(--primary); border-radius: 2px 0 0 2px; }

.sidebar-footer { padding: 16px; border-top: 1px solid var(--border); }
.sidebar-user { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.user-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; }
.user-info { display: flex; flex-direction: column; }
.user-email { font-size: 13px; color: var(--text); max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-balance { font-size: 11px; color: var(--text-muted); }
.logout-btn { color: var(--text-muted); transition: color .2s; display: inline-flex; }
.logout-btn:hover { color: var(--danger); }

/* Main Content */
.main-content { flex: 1; margin-left: var(--sidebar-width); padding-top: 56px; }
.page-content { padding: 24px; }

/* ===== Topbar（全设备显示） ===== */
.topbar { display: flex; position: fixed; top: 0; left: 0; right: 0; height: 56px; background: var(--card-bg); border-bottom: 1px solid var(--border); z-index: 200; align-items: center; justify-content: space-between; padding: 0 16px; }
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; color: var(--text); }
.menu-toggle { display: none; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--border); background: var(--card-bg); cursor: pointer; color: var(--text-secondary); }
.menu-toggle:hover { border-color: var(--primary); color: var(--primary); }
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border); background: var(--card-bg); cursor: pointer; color: var(--text-secondary); transition: all .2s; }
.theme-toggle:hover { border-color: var(--primary); color: var(--primary); }
.theme-toggle .icon-moon { display: none; }
body.dark .theme-toggle .icon-sun { display: none; }
body.dark .theme-toggle .icon-moon { display: block; }

.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.page-header h1 { font-size: 22px; font-weight: 700; }

/* ===== KPI 统计卡片 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }

.stat-card { display: flex; align-items: center; gap: 16px; padding: 22px; transition: transform .2s, box-shadow .2s; }
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.stat-icon { width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-icon.blue { background: var(--primary-bg); color: var(--primary); }
.stat-icon.green { background: rgba(82,196,26,0.12); color: var(--success); }
.stat-icon.orange { background: rgba(250,173,20,0.12); color: var(--warning); }
.stat-icon.red { background: rgba(255,77,79,0.12); color: var(--danger); }
.stat-icon.purple-indigo { background: rgba(47,84,235,0.12); color: #2F54EB; }
.stat-info { flex: 1; min-width: 0; }
.stat-label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.stat-value { display: block; font-size: 24px; font-weight: 700; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.stat-value small { font-weight: 500; font-size: 13px; }

/* ===== Row Flex ===== */
.row-flex { display: flex; gap: 20px; }
.col-main { flex: 2; min-width: 0; }
.col-side { flex: 1; min-width: 0; }

/* ===== Section ===== */
.section-title { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }

/* ===== Chart ===== */
.chart-container { position: relative; width: 100%; min-height: 260px; }
.chart-container canvas { width: 100% !important; }

/* ===== Announcements ===== */
.announcements-list { display: flex; flex-direction: column; gap: 14px; }
.announce-item { padding: 14px; background: var(--bg); border-radius: var(--radius-sm); border-left: 3px solid var(--primary); }
.announce-item strong { font-size: 14px; display: block; margin-bottom: 4px; }
.announce-item p { font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }

/* ===== Rates ===== */
.rates-grid { display: flex; gap: 12px; }
.rate-card { flex: 1; text-align: center; padding: 22px; background: var(--bg); border-radius: var(--radius-sm); }
.rate-icon { display: inline-flex; align-items: center; justify-content: center; width: 50px; height: 50px; border-radius: 50%; font-size: 12px; font-weight: 700; margin-bottom: 10px; }
.rate-icon.wx { background: rgba(7,193,96,0.12); color: #07C160; }
.rate-icon.ali { background: rgba(22,119,255,0.12); color: #1677FF; }
.rate-icon.usdt { background: rgba(247,147,26,0.12); color: #F7931A; }
.rate-value { font-size: 26px; font-weight: 700; }
.rate-img { width: 44px; height: 44px; object-fit: contain; margin-bottom: 10px; }

/* ===== Device Monitor ===== */
.devices-monitor { display: flex; flex-direction: column; gap: 10px; }
.device-status-row { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.device-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.device-dot.online { background: var(--success); box-shadow: 0 0 6px rgba(82,196,26,0.5); }
.device-dot.offline { background: var(--danger); }
.device-dot-big { width: 12px; height: 12px; border-radius: 50%; }
.device-dot-big.online { background: var(--success); box-shadow: 0 0 8px rgba(82,196,26,0.5); }
.device-dot-big.offline { background: var(--danger); }

/* ===== Table ===== */
.table-wrapper { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { padding: 14px 16px; text-align: left; font-weight: 600; color: var(--text-secondary); background: var(--bg); border-bottom: 1px solid var(--border); white-space: nowrap; font-size: 12px; }
.data-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.data-table tbody tr { transition: background .15s; }
.data-table tbody tr:hover { background: var(--bg); }

/* ===== Badge ===== */
.badge { display: inline-block; padding: 3px 12px; border-radius: var(--radius-pill); font-size: 12px; font-weight: 500; }
.badge.wxpay { background: rgba(7,193,96,0.1); color: #07C160; }
.badge.alipay { background: rgba(22,119,255,0.1); color: #1677FF; }
.badge.usdt { background: rgba(247,147,26,0.1); color: #F7931A; }
.badge-sm { font-size: 11px; padding: 2px 8px; }

.status-tag { display: inline-block; padding: 4px 12px; border-radius: var(--radius-pill); font-size: 12px; }
.status-tag.status-0 { background: rgba(250,173,20,0.12); color: var(--warning); }
.status-tag.status-1 { background: rgba(82,196,26,0.12); color: var(--success); }
.status-tag.status-2 { background: var(--primary-bg); color: var(--primary); }
.status-tag.status-expired { background: rgba(0,0,0,0.05); color: var(--text-muted); }
.status-tag.status-online { background: rgba(24,144,255,0.12); color: #0958d9; }
.status-tag.status-offline { background: rgba(255,77,79,0.12); color: var(--danger); }

.mono { font-family: var(--font-mono); font-size: 12px; }

/* ===== Pagination ===== */
.pagination { display: flex; justify-content: center; gap: 8px; padding: 20px 0; }
.page-link { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--radius-sm); font-size: 13px; color: var(--text-secondary); text-decoration: none; border: 1px solid var(--border); transition: all .2s; }
.page-link.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-link:hover:not(.active) { border-color: var(--primary); color: var(--primary); }

/* ===== Form ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.form-input { width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 14px; transition: border-color .2s, box-shadow .2s; background: #fff; }
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }
.search-row { display: flex; gap: 10px; }

/* ===== Modal ===== */
.modal { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 1000; align-items: center; justify-content: center; }
.modal-backdrop { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.4); backdrop-filter: blur(4px); }
.modal-content { position: relative; width: 100%; max-width: 480px; max-height: 80vh; overflow-y: auto; padding: 28px; margin: 20px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.modal-header h3 { font-size: 18px; font-weight: 700; }
.modal-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-muted); padding: 0; line-height: 1; }
.modal-close:hover { color: var(--text); }

/* ===== Channels Grid ===== */
.channels-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.channel-card { padding: 20px; transition: box-shadow .2s, transform .2s; }
.channel-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.channel-header { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.channel-status { font-size: 12px; margin-left: auto; }
.channel-status.active { color: var(--success); }
.channel-status.inactive { color: var(--danger); }
.channel-body h4 { font-size: 16px; margin-bottom: 10px; }
.channel-qrcode-mini { width: 80px; height: 80px; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); margin-bottom: 10px; }
.channel-qrcode-mini img { width: 100%; height: 100%; object-fit: cover; cursor: pointer; }
.channel-device-info { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
.channel-actions { display: flex; gap: 6px; flex-wrap: wrap; padding-top: 14px; border-top: 1px solid var(--border); }
.usdt-mini code { font-size: 11px; word-break: break-all; display: block; background: var(--bg); padding: 6px 8px; border-radius: 6px; margin-bottom: 8px; }

/* ===== Devices Grid ===== */
.devices-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.device-card { padding: 20px; transition: box-shadow .2s, transform .2s; }
.device-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.device-card-header { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.device-card-header h4 { font-size: 16px; }
.device-status-text { margin-left: auto; font-size: 12px; }
.device-card-body { margin-bottom: 14px; }
.device-info-row { display: flex; justify-content: space-between; font-size: 13px; padding: 6px 0; border-bottom: 1px solid var(--border); }
.device-info-row span:first-child { color: var(--text-muted); }
.device-info-row code { font-size: 11px; }
.device-card-actions { display: flex; gap: 6px; flex-wrap: wrap; padding-top: 14px; border-top: 1px solid var(--border); }

/* ===== API Info ===== */
.api-info-list { display: flex; flex-direction: column; gap: 16px; }
.api-info-item label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.copy-row { display: flex; align-items: center; gap: 8px; }
.copy-row code { flex: 1; padding: 12px 14px; background: var(--bg); border-radius: var(--radius-sm); font-size: 12px; word-break: break-all; font-family: var(--font-mono); }

.api-doc h4 { font-size: 15px; margin-top: 16px; margin-bottom: 8px; }
.api-doc p { font-size: 13px; color: var(--text-secondary); }
.code-block { background: #1E1E2E; color: #CDD6F4; padding: 16px 20px; border-radius: var(--radius-sm); overflow-x: auto; font-size: 12px; line-height: 1.7; font-family: var(--font-mono); }
.code-block code { font-family: var(--font-mono); }

/* ===== Balance Card ===== */
.balance-card { display: flex; align-items: center; justify-content: space-between; padding: 28px; margin-bottom: 20px; }
.balance-label { font-size: 14px; color: var(--text-muted); display: block; margin-bottom: 4px; }
.balance-value { font-size: 34px; font-weight: 700; color: var(--text); }

/* ===== Settings Grid ===== */
.settings-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.info-item { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.info-item label { color: var(--text-muted); }

/* ===== Record Item ===== */
.record-item { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 13px; }

/* ===== Text Utilities ===== */
.text-muted { color: var(--text-muted); font-size: 13px; }
.text-link { color: var(--primary); text-decoration: none; font-size: 13px; }
.text-link:hover { text-decoration: underline; }

/* ===== Toast ===== */
.toast { position: fixed; top: 24px; left: 50%; transform: translateX(-50%) translateY(-20px); background: #fff; color: #262626; padding: 12px 24px; border-radius: 12px; box-shadow: 0 8px 24px rgba(0,0,0,0.15); font-size: 14px; opacity: 0; transition: all .3s ease; z-index: 9999; max-width: 80%; word-break: break-all; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast-info { background: #fff; color: #262626; }
.toast-success { background: #52c41a; color: #fff; }
.toast-error { background: #ff4d4f; color: #fff; }
body.dark .toast-info { background: #161B22; color: #E6E6E6; }

/* ===== 暗色模式（body.dark 类控制） ===== */
body.dark {
    --primary: #40A9FF;
    --primary-bg: rgba(64,169,255,0.15);
    --text: #E6E6E6;
    --text-secondary: #B0B0B0;
    --text-muted: #8C8C8C;
    --bg: #0D1117;
    --card-bg: #161B22;
    --border: #21262D;
    --shadow: 0 2px 16px rgba(0,0,0,0.4);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.5);
    background: #0D1117;
}
body.dark .glass-sidebar { background: #161B22; }
body.dark .form-input { background: #161B22; }
body.dark .auth-form .input-wrapper input { background: #161B22; }
body.dark .data-table th { background: #161B22; }
body.dark .data-table tbody tr:hover { background: #1C2128; }
body.dark .rate-card { background: #1C2128; }
body.dark .announce-item { background: #1C2128; }
body.dark .copy-row code { background: #1C2128; }
body.dark .usdt-mini code { background: #1C2128; }
body.dark .code-block { background: #161B22; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .row-flex { flex-direction: column; }
    .sidebar { width: 200px; }
    .main-content { margin-left: 200px; }
    .settings-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: transform .25s ease; width: 260px; }
    .sidebar.open { transform: translateX(0); }
    .sidebar-backdrop { display: none; position: fixed; top: 56px; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.4); z-index: 90; }
    .sidebar-backdrop.show { display: block; }
    .app-layout { flex-direction: column; }
    .main-content { margin-left: 0; padding-top: 56px; }
    .menu-toggle { display: flex; }
    .stats-grid { grid-template-columns: 1fr; }
    .channels-grid, .devices-grid { grid-template-columns: 1fr; }
    .settings-grid { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; align-items: flex-start; gap: 8px; }
    .page-content { padding: 16px; }
}

/* ===== Admin Sidebar ===== */
.admin-sidebar { background: #FFFFFF; }

/* ===== Auth Footer ===== */
.auth-footer { text-align: center; margin-top: 20px; }