/* Earphone Admin Console - Premium UI */

/* ========== 全局 ========== */
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    min-height: 100vh;
    background: #F1F5F9;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.65;
    color: #334155;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #0F172A;
    letter-spacing: -0.02em;
}

/* ========== 侧边栏 ========== */
.sidebar-link {
    display: flex;
    align-items: center;
    padding: 8px 16px 8px 20px;
    margin: 1px 8px;
    border-radius: 8px;
    color: #94A3B8;
    text-decoration: none;
    font-size: 13px;
    font-weight: 400;
    transition: all 0.2s ease;
    gap: 10px;
    cursor: pointer;
    border-right: none;
}
.sidebar-link:hover {
    color: #E2E8F0;
    background: rgba(255,255,255,0.06);
}
.sidebar-link.active {
    color: #fff;
    background: linear-gradient(135deg, #4F46E5, #6366F1);
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}
.group-title {
    padding: 16px 20px 6px;
    font-size: 10px;
    color: #475569;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-weight: 700;
}
.icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.8;
}
.sidebar-link.active .icon { opacity: 1; }

/* ========== 顶部栏 ========== */
header {
    backdrop-filter: blur(12px);
    background: rgba(255,255,255,0.85) !important;
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

/* ========== 卡片 ========== */
.bg-white {
    border-radius: 12px;
}
.shadow-sm {
    box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02) !important;
}
.border-slate-100 {
    border-color: rgba(0,0,0,0.04) !important;
}

/* ========== 统计卡片 ========== */
.stat-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0,0,0,0.04);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366F1, #8B5CF6);
    opacity: 0;
    transition: opacity 0.3s;
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
}
.stat-card:hover::before { opacity: 1; }

/* ========== 表格 ========== */
.table { font-size: 13px; }
.table th {
    background: #F8FAFC;
    font-weight: 600;
    color: #64748B;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 12px 16px;
    border-bottom: 2px solid #E2E8F0;
}
.table td {
    color: #475569;
    padding: 11px 16px;
    border-bottom: 1px solid #F1F5F9;
}
.table tr:hover td {
    background: #F8FAFC;
}
.table tr:last-child td {
    border-bottom: none;
}

/* ========== 输入框 ========== */
.input, .select, .textarea {
    font-size: 14px;
    color: #334155;
    border-color: #E2E8F0;
    transition: all 0.2s;
}
.input:focus, .select:focus, .textarea:focus {
    border-color: #6366F1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    outline: none;
}
.input::placeholder, .textarea::placeholder {
    color: #CBD5E1;
}
.label-text {
    font-size: 13px;
    color: #64748B;
    font-weight: 500;
}

/* ========== 按钮 ========== */
.btn {
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: all 0.2s;
}
.btn-primary {
    background: linear-gradient(135deg, #4F46E5, #6366F1);
    border: none;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}
.btn-primary:hover {
    background: linear-gradient(135deg, #4338CA, #4F46E5);
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
    transform: translateY(-1px);
}
.btn-ghost:hover {
    background: #F1F5F9;
}
.btn-xs {
    font-size: 12px;
    border-radius: 6px;
}

/* ========== Badge ========== */
.badge {
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.02em;
    border-radius: 6px;
}

/* ========== Toggle ========== */
.toggle-primary:checked {
    background: linear-gradient(135deg, #4F46E5, #6366F1);
    border-color: #4F46E5;
}

/* ========== Checkbox ========== */
.checkbox-primary:checked {
    background: linear-gradient(135deg, #4F46E5, #6366F1);
    border-color: #4F46E5;
}

/* ========== Tab ========== */
.tab {
    font-size: 13px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s;
}
.tab-active, .tab.tab-active {
    background: linear-gradient(135deg, #4F46E5, #6366F1) !important;
    color: #fff !important;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}
.tabs-boxed {
    border-radius: 10px;
    padding: 4px;
    gap: 2px;
}

/* ========== Alert/Toast ========== */
.alert { font-size: 13px; border-radius: 10px; }
.toast { z-index: 9999; }

/* ========== Modal ========== */
.modal-box {
    border-radius: 16px;
    padding: 28px;
}

/* ========== Divider ========== */
.divider {
    color: #94A3B8;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.divider::before, .divider::after {
    background: #E2E8F0;
}

/* ========== 等宽字体 ========== */
.font-mono {
    font-family: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Monaco, Consolas, monospace;
    font-size: 12px;
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94A3B8; }

/* ========== 页面过渡动画 ========== */
main { animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ========== 面包屑 ========== */
header .text-sm { font-size: 13px; }

/* ========== Dropdown 美化 ========== */
.dropdown-content {
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.04);
    border: 1px solid rgba(0,0,0,0.04);
}