:root {
    --tblr-font-sans-serif: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --tblr-primary: #2563eb;
    --tblr-primary-rgb: 37, 99, 235;
}
body { font-feature-settings: "cv03", "cv04", "cv11"; }

/* Thương hiệu */
.brand { display: inline-flex; align-items: center; gap: .55rem; font-weight: 700; letter-spacing: -.01em; color: inherit; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 2rem; height: 2rem; border-radius: .6rem; display: inline-flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6); color: #fff; font-size: 1.05rem; box-shadow: 0 4px 12px rgba(59,130,246,.35); }

/* Sidebar */
.navbar-vertical { background: #0f172a !important; }
.navbar-vertical .nav-link { border-radius: .5rem; margin: 1px .5rem; padding: .55rem .75rem; }
.navbar-vertical .nav-item.active > .nav-link { background: rgba(59,130,246,.18); color: #fff; }
.navbar-vertical .nav-item.active .nav-link-icon { color: #60a5fa; }
.navbar-vertical .nav-link-icon i { font-size: 1.05rem; }
.nav-section { padding: .25rem 1.25rem; font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: rgba(255,255,255,.4); }
.sidebar-user { display: flex; align-items: center; gap: .6rem; margin: 1rem .5rem; padding: .75rem; border-radius: .6rem; background: rgba(255,255,255,.05); }
.sidebar-user a { text-decoration: none; }

/* Trang đăng nhập */
.auth-bg { background: radial-gradient(1200px 600px at 10% -10%, #1e3a8a 0%, transparent 60%),
                       radial-gradient(900px 500px at 110% 110%, #4c1d95 0%, transparent 55%), #0f172a; min-height: 100vh; }
.auth-bg .card { border: 0; box-shadow: 0 25px 60px rgba(0,0,0,.35); }

/* Tiêu đề trang */
.page-head { display: flex; align-items: center; justify-content: space-between; gap: .75rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.page-head h1 { font-size: 1.35rem; font-weight: 700; margin: 0; letter-spacing: -.01em; }
.page-head .page-pretitle, .page-head > div > a.small { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--tblr-secondary); text-decoration: none; }

/* Thẻ số liệu */
.stat { height: 100%; }
.stat .card-body { display: flex; align-items: center; gap: .9rem; }
.stat .avatar { width: 2.6rem; height: 2.6rem; border-radius: .7rem; font-size: 1.2rem; flex-shrink: 0; }
.stat .value { font-size: 1.45rem; font-weight: 700; line-height: 1.15; letter-spacing: -.02em; }
.stat .label { color: var(--tblr-secondary); font-size: .8rem; }
a.stat { text-decoration: none; color: inherit; transition: transform .15s, box-shadow .15s; }
a.stat:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(15,23,42,.08); }

/* Bảng */
.card > .table-responsive > .table, .card > .table { margin-bottom: 0; }
.table thead th { font-size: .7rem; letter-spacing: .05em; }
.host { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .85rem; }
.text-truncate-200 { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; vertical-align: bottom; }
.flash div { white-space: pre-wrap; }

/* Upload */
.upload-drop { border: 2px dashed var(--tblr-border-color); border-radius: .75rem; padding: 1.25rem; background: var(--tblr-bg-surface-secondary, #f8fafc); }

/* Tabs nằm trong card */
.nav-tabs + .tab-content.card { border-top-left-radius: 0; border-top-right-radius: 0; }
.empty-row td { padding: 2rem !important; color: var(--tblr-secondary); text-align: center; }