:root{--edu-primary: #2563eb;--edu-primary-dark: #12335f;--edu-primary-soft: #eaf2ff;--edu-accent: #16a34a;--edu-warm: #d97706;--edu-bg: #eef4fb;--edu-surface: #ffffff;--edu-border: #dbe5f1;--edu-text: #1f2937;--edu-muted: #64748b}html,body,#root{min-height:100%;background:var(--edu-bg)}body{color:var(--edu-text)}.admin-shell{background:radial-gradient(circle at 16% 0%,rgba(37,99,235,.1),transparent 26%),linear-gradient(180deg,#f6f9fe 0%,var(--edu-bg) 100%)}.admin-sider,.admin-sider .ant-layout-sider-children{background:linear-gradient(180deg,#12335f,#0d284d)}.admin-brand{border-bottom:1px solid rgba(255,255,255,.1);background:#ffffff0a}.admin-brand h1{letter-spacing:0;font-weight:700}.admin-menu.ant-menu-dark{background:transparent;padding:8px}.admin-menu.ant-menu-dark .ant-menu-item{height:44px;line-height:44px;margin:4px 0;color:#e8f0fdc7}.admin-menu.ant-menu-dark .ant-menu-item:hover{background:#ffffff1a;color:#fff}.admin-menu.ant-menu-dark .ant-menu-item-selected{background:linear-gradient(135deg,#2563eb,#1d4ed8);box-shadow:0 8px 20px #2563eb47}.admin-header{border-bottom:1px solid rgba(18,51,95,.08)}.admin-content{border:1px solid rgba(219,229,241,.86);box-shadow:0 14px 36px #12335f12}.ant-card{border-color:var(--edu-border);box-shadow:0 10px 28px #12335f0f}.ant-card-head{border-bottom-color:var(--edu-border);color:#1f3a5f}.ant-table-thead>tr>th{background:#f4f8fd!important;color:#1f3a5f!important;font-weight:650}.ant-table-tbody>tr:hover>td{background:#f8fbff!important}.ant-tabs .ant-tabs-tab.ant-tabs-tab-active .ant-tabs-tab-btn,.ant-tabs .ant-tabs-tab:hover{color:var(--edu-primary)}.ant-tabs .ant-tabs-ink-bar{background:var(--edu-primary)}.ant-statistic-title{color:var(--edu-muted)}.ant-statistic-content{color:#1f3a5f}.admin-login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(circle at 15% 15%,rgba(22,163,74,.16),transparent 24%),radial-gradient(circle at 86% 12%,rgba(217,119,6,.16),transparent 22%),linear-gradient(135deg,#eaf2ff,#f7fbff 48%,#eef7f1)}.admin-login-card{border:1px solid rgba(219,229,241,.9);box-shadow:0 24px 60px #12335f29}.admin-login-card h1{margin:10px 0 4px;color:#12335f;font-size:26px;font-weight:750}.admin-login-card p{margin:0;color:var(--edu-muted)}.login-mark{width:54px;height:54px;margin:0 auto;border-radius:14px;display:grid;place-items:center;color:#fff;font-size:26px;font-weight:800;background:linear-gradient(135deg,#2563eb,#16a34a);box-shadow:0 12px 28px #2563eb42}@media(max-width:767px){.admin-content{border-radius:8px;box-shadow:0 10px 24px #12335f0f}.admin-login-card{width:min(100%,400px)!important}}