:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --bg: #f6f7fb;
    --card-bg: #ffffff;
    --text: #1f2430;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --success-bg: #ecfdf5;
    --success-text: #047857;
    --error-bg: #fef2f2;
    --error-text: #b91c1c;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.topbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
}
.brand { font-weight: 700; font-size: 1.25rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.nav a { color: var(--text-muted); font-weight: 500; }
.nav a:hover { color: var(--primary); text-decoration: none; }

.main-content { padding: 32px 20px 60px; min-height: 60vh; }

.footer {
    padding: 24px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 0.95rem;
}
.alert-success { background: var(--success-bg); color: var(--success-text); }
.alert-error { background: var(--error-bg); color: var(--error-text); }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}

.card-narrow { max-width: 420px; margin: 0 auto; }

h1 { font-size: 1.6rem; margin-top: 0; }
h2 { font-size: 1.2rem; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.9rem; }
input[type=text], input[type=email], input[type=password], input[type=url], input[type=color], textarea, select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    background: #fff;
    color: var(--text);
}
textarea { resize: vertical; min-height: 80px; }
.form-hint { color: var(--text-muted); font-size: 0.82rem; margin-top: 4px; }

.btn {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }
.btn-secondary { background: #e5e7eb; color: var(--text); }
.btn-secondary:hover { background: #d1d5db; }
.btn-danger { background: #dc2626; }
.btn-danger:hover { background: #b91c1c; }
.btn-link { background: none; color: var(--text-muted); padding: 0; font-weight: 500; }
.btn-link:hover { color: var(--primary); }

.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-box {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    text-align: center;
}
.stat-box .value { font-size: 1.8rem; font-weight: 700; color: var(--primary); }
.stat-box .label { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: none; }

.table-wrap { overflow-x: auto; }

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-active { background: var(--success-bg); color: var(--success-text); }
.badge-inactive, .badge-blocked { background: var(--error-bg); color: var(--error-text); }
.badge-admin { background: #ede9fe; color: #6d28d9; }
.badge-user { background: #e0f2fe; color: #0369a1; }

.actions { display: flex; gap: 10px; flex-wrap: wrap; }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 140px;
    padding-top: 10px;
}
.chart-bar {
    flex: 1;
    background: var(--primary);
    border-radius: 4px 4px 0 0;
    min-height: 2px;
    position: relative;
}
.chart-labels { display: flex; gap: 4px; margin-top: 6px; }
.chart-labels span { flex: 1; text-align: center; font-size: 0.65rem; color: var(--text-muted); }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }

.short-url-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #f3f4f6;
    padding: 8px 12px;
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.9rem;
}

/* --- Página pública tipo "Page" (biolink) --- */
.page-view {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 16px;
}
.page-card {
    max-width: 420px;
    width: 100%;
    text-align: center;
}
.page-avatar {
    width: 96px; height: 96px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 16px;
    background: #fff;
    display: block;
}
.page-avatar-placeholder {
    width: 96px; height: 96px;
    border-radius: 50%;
    margin: 0 auto 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 700; color: #fff;
}
.page-name { font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; color: #fff; }
.page-description { color: rgba(255,255,255,0.85); margin-bottom: 24px; font-size: 0.95rem; }
.page-buttons { display: flex; flex-direction: column; gap: 12px; }
.page-btn {
    display: block;
    background: rgba(255,255,255,0.95);
    color: #1f2430;
    padding: 14px 20px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: transform .15s ease;
}
.page-btn:hover { transform: translateY(-2px); text-decoration: none; }
.page-footer { margin-top: 30px; font-size: 0.75rem; color: rgba(255,255,255,0.6); }

@media (max-width: 640px) {
    .topbar-inner { flex-direction: column; gap: 10px; align-items: flex-start; }
}