/* ===== 全局重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #4338ca;
    --primary-bg: #eef2ff;
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --info: #0891b2;
    --info-bg: #ecfeff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --sidebar-w: 240px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    font-size: 14px;
    line-height: 1.6;
}

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

/* ===== 侧边栏 ===== */
.sidebar {
    width: var(--sidebar-w);
    background: var(--gray-900);
    color: var(--gray-300);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 22px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-header .logo-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 700; color: #fff;
}

.sidebar-header .logo-text {
    font-size: 16px; font-weight: 700; color: #fff;
    line-height: 1.3;
}

.sidebar-header .logo-text small {
    font-size: 11px; font-weight: 400; color: var(--gray-400);
    display: block;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    overflow-y: auto;
}

.nav-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    padding: 16px 12px 6px;
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--gray-300);
    transition: all 0.15s;
    margin-bottom: 2px;
    font-size: 14px;
    user-select: none;
}

.nav-item:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
}

.nav-item.active {
    background: var(--primary);
    color: #fff;
}

.nav-item .nav-icon {
    width: 20px; text-align: center;
    font-size: 16px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 12px;
    color: var(--gray-500);
}

/* ===== 主内容区 ===== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    padding: 0;
}

.topbar {
    background: #fff;
    padding: 16px 28px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
}

.topbar-subtitle {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 2px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-badge.online {
    background: var(--success-bg);
    color: var(--success);
}

.status-badge.offline {
    background: var(--danger-bg);
    color: var(--danger);
}

.status-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
}

.status-badge.online .status-dot {
    background: var(--success);
    box-shadow: 0 0 0 3px rgba(22,163,74,0.2);
    animation: pulse 2s infinite;
}

.status-badge.offline .status-dot {
    background: var(--danger);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.content-area {
    padding: 28px;
}

/* ===== 页面切换 ===== */
.page { display: none; }
.page.active { display: block; animation: fadeIn 0.2s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 卡片 ===== */
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-body { padding: 20px; }

/* ===== 统计卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: transform 0.15s, box-shadow 0.15s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 48px; height: 48px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.stat-icon.blue { background: var(--primary-bg); color: var(--primary); }
.stat-icon.green { background: var(--success-bg); color: var(--success); }
.stat-icon.orange { background: var(--warning-bg); color: var(--warning); }
.stat-icon.cyan { background: var(--info-bg); color: var(--info); }

.stat-info { flex: 1; }

.stat-label {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
}

.stat-extra {
    font-size: 11px;
    color: var(--gray-400);
    margin-top: 4px;
}

/* ===== 表单 ===== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group.full { grid-column: 1 / -1; }

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-label .hint {
    font-weight: 400;
    font-size: 11px;
    color: var(--gray-400);
    margin-left: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-800);
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
    font-family: inherit;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.form-input:read-only {
    background: var(--gray-50);
    color: var(--gray-500);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.15s;
    white-space: nowrap;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-success {
    background: var(--success);
    color: #fff;
}

.btn-success:hover { background: #15803d; }

.btn-danger {
    background: var(--danger);
    color: #fff;
    border: none;
}

.btn-danger:hover { background: #c41818; }

.btn-warning {
    background: var(--warning);
    color: #fff;
    border: none;
}
.btn-warning:hover { background: #b45309; }

.btn-outline {
    background: #fff;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

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

/* ===== 结果展示 ===== */
.result-box {
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-top: 16px;
    font-size: 13px;
    display: none;
}

.result-box.show { display: block; }

.result-box.success {
    background: var(--success-bg);
    border: 1px solid #bbf7d0;
}

.result-box.error {
    background: var(--danger-bg);
    border: 1px solid #fecaca;
}

.result-box.info {
    background: var(--info-bg);
    border: 1px solid #a5f3fc;
}

.result-title {
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.result-content {
    background: rgba(255,255,255,0.6);
    border-radius: var(--radius-sm);
    padding: 12px;
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 12px;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 400px;
    overflow-y: auto;
    line-height: 1.7;
}

.result-fields {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 8px;
    margin-bottom: 12px;
}

.result-field {
    background: #fff;
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    border: 1px solid var(--gray-100);
}

.result-field-label {
    font-size: 11px;
    color: var(--gray-500);
    margin-bottom: 2px;
}

.result-field-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-800);
    word-break: break-all;
}

.result-field-value.success { color: var(--success); }
.result-field-value.danger { color: var(--danger); }
.result-field-value.warning { color: var(--warning); }

/* ===== 表格 ===== */
.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th {
    text-align: left;
    padding: 10px 14px;
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-600);
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
}

td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

tr:hover td {
    background: var(--gray-50);
}

/* ===== 标签 ===== */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.tag-success { background: var(--success-bg); color: var(--success); }
.tag-danger { background: var(--danger-bg); color: var(--danger); }
.tag-warning { background: var(--warning-bg); color: var(--warning); }
.tag-info { background: var(--info-bg); color: var(--info); }
.tag-gray { background: var(--gray-100); color: var(--gray-500); }

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--gray-400);
}

.empty-state .empty-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

/* ===== 提示框 ===== */
.alert {
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 16px;
    font-size: 13px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.alert-info {
    background: var(--info-bg);
    border: 1px solid #a5f3fc;
    color: var(--info);
}

.alert-warning {
    background: var(--warning-bg);
    border: 1px solid #fde68a;
    color: var(--warning);
}

/* ===== 支付方式选择 ===== */
.pay-method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
}

.pay-method-card {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    padding: 14px 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
}

.pay-method-card:hover {
    border-color: var(--primary-light);
}

.pay-method-card.selected {
    border-color: var(--primary);
    background: var(--primary-bg);
}

.pay-method-card .pm-icon {
    font-size: 24px;
    margin-bottom: 4px;
}

.pay-method-card .pm-name {
    font-size: 12px;
    font-weight: 600;
}

/* ===== 回调日志 ===== */
.log-item {
    background: #fff;
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-bottom: 10px;
    border-left: 4px solid var(--gray-300);
    box-shadow: var(--shadow);
}

.log-item.pay { border-left-color: var(--primary); }
.log-item.withdraw { border-left-color: var(--warning); }

.log-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.log-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
}

.log-data {
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11px;
    background: var(--gray-50);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--gray-600);
    word-break: break-all;
    line-height: 1.6;
}

/* ===== 加载动画 ===== */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay.show { display: flex; }

.spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    top: 20px; right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: #fff;
    border-radius: var(--radius-sm);
    padding: 12px 18px;
    box-shadow: var(--shadow-lg);
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideIn 0.3s ease;
    min-width: 200px;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--info); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .form-grid { grid-template-columns: 1fr; }
    .content-area { padding: 16px; }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ===== 返回通道选择按钮 ===== */
#backToChannelBtn {
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 600;
}
#backToChannelBtn:hover {
    background: var(--primary);
    color: #fff;
}

/* ===== 通道选择页响应式 ===== */
@media (max-width: 768px) {
    #channelSelectPage > div { padding: 30px 16px; }
    #channelCardsGrid { grid-template-columns: 1fr !important; }
}