:root {
    --bg: #0f172a;
    --bg2: #1e293b;
    --card: #ffffff;
    --ink: #0f172a;
    --muted: #64748b;
    --line: #e2e8f0;
    --brand: #2563eb;
    --brand-d: #1d4ed8;
    --ok: #16a34a;
    --danger: #dc2626;
    --radius: 14px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--ink);
    background: #f1f5f9;
    line-height: 1.5;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Topbar ---------- */
.topbar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 1rem; padding: .7rem 1.25rem;
    background: linear-gradient(120deg, var(--bg), var(--bg2));
    color: #fff; flex-wrap: wrap;
}
.topbar .brand { color: #fff; font-weight: 700; font-size: 1.1rem; }
.topbar nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.topbar nav a { color: #cbd5e1; font-weight: 500; }
.topbar nav a.on, .topbar nav a:hover { color: #fff; text-decoration: none; }
.topbar .who { color: #94a3b8; font-size: .9rem; }
.linkbtn {
    background: none; border: 1px solid #475569; color: #e2e8f0;
    padding: .3rem .8rem; border-radius: 8px; cursor: pointer; font-size: .85rem;
}
.linkbtn:hover { background: #334155; }
.inline { display: inline; margin: 0; }

/* ---------- Layout ---------- */
.wrap { max-width: 1100px; margin: 0 auto; padding: 2rem 1.25rem 3rem; }
.page-title { margin: 0 0 .25rem; font-size: 1.6rem; }
.lead { color: var(--muted); margin: 0 0 1.5rem; }
.group { margin: 2rem 0 .75rem; font-size: .8rem; letter-spacing: .08em;
         text-transform: uppercase; color: var(--muted); }
.foot { text-align: center; color: var(--muted); padding: 2rem 1rem; font-size: .85rem; }

.flash {
    background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46;
    padding: .7rem 1rem; border-radius: 10px; margin-bottom: 1.25rem;
}

/* ---------- Grid de webs ---------- */
.grid {
    display: grid; gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.card {
    display: flex; gap: .9rem; background: var(--card); color: var(--ink);
    border: 1px solid var(--line); border-radius: var(--radius);
    padding: 1.1rem; transition: transform .12s, box-shadow .12s, border-color .12s;
}
.card:hover {
    text-decoration: none; transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(15,23,42,.10); border-color: #c7d2fe;
}
.card-icon { font-size: 1.9rem; line-height: 1; }
.card-body h3 { margin: 0 0 .3rem; font-size: 1.05rem; }
.card-body p { margin: 0 0 .6rem; color: var(--muted); font-size: .9rem; }
.card-url { font-size: .78rem; color: var(--brand); font-weight: 600; }

/* ---------- Login ---------- */
.login-card {
    max-width: 380px; margin: 6vh auto 0; background: #fff;
    border: 1px solid var(--line); border-radius: var(--radius);
    padding: 2rem; box-shadow: 0 12px 40px rgba(15,23,42,.12);
}
.login-card h1 { margin: 0; font-size: 1.4rem; text-align: center; }
.login-card .sub { text-align: center; color: var(--muted); margin: .25rem 0 1.5rem; }

/* ---------- Formularios ---------- */
label { display: block; margin-bottom: 1rem; font-weight: 600; font-size: .9rem; }
label.check { font-weight: 500; }
input[type=text], input[type=email], input[type=password], select {
    width: 100%; margin-top: .35rem; padding: .6rem .7rem;
    border: 1px solid #cbd5e1; border-radius: 9px; font-size: 1rem; font-family: inherit;
    background: #fff;
}
input:focus, select:focus { outline: 2px solid var(--brand); border-color: var(--brand); }
label.check { display: flex; align-items: center; gap: .5rem; }
label.check input { width: auto; margin: 0; }

.form-card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 1.5rem; max-width: 520px;
}
.form-actions { display: flex; gap: .6rem; margin-top: .5rem; }

.btn {
    display: inline-block; padding: .55rem 1rem; border-radius: 9px;
    border: 1px solid #cbd5e1; background: #fff; color: var(--ink);
    font-weight: 600; font-size: .9rem; cursor: pointer; font-family: inherit;
}
.btn:hover { text-decoration: none; background: #f8fafc; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-d); }
.btn.block { width: 100%; }
.btn.small { padding: .35rem .7rem; font-size: .82rem; }
.btn.danger { color: var(--danger); border-color: #fecaca; }
.btn.danger:hover { background: #fef2f2; }

.err {
    background: #fef2f2; border: 1px solid #fecaca; color: #991b1b;
    padding: .7rem 1rem; border-radius: 10px; margin-bottom: 1.25rem;
}
.err ul { margin: 0; padding-left: 1.2rem; }

/* ---------- Tabla usuarios ---------- */
.head-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.tbl { width: 100%; border-collapse: collapse; min-width: 720px; }
.tbl th, .tbl td { padding: .7rem .9rem; text-align: left; border-bottom: 1px solid var(--line); font-size: .9rem; }
.tbl th { background: #f8fafc; color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.tbl tr:last-child td { border-bottom: none; }
.actions { display: flex; gap: .4rem; white-space: nowrap; }
.muted { color: var(--muted); }
.tag { background: #dbeafe; color: #1e40af; font-size: .7rem; padding: .1rem .4rem; border-radius: 6px; }
.badge { background: #f1f5f9; color: #475569; font-size: .78rem; padding: .15rem .55rem; border-radius: 20px; }
.badge.admin { background: #ede9fe; color: #6d28d9; }
.badge.ok { background: #dcfce7; color: #166534; }
.badge.off { background: #fee2e2; color: #991b1b; }

@media (max-width: 640px) {
    .wrap { padding: 1.25rem 1rem 2rem; }
    .topbar { padding: .6rem 1rem; }
}