:root {
    --bg: #0f1420;
    --panel: #161d2e;
    --border: #273047;
    --text: #e8ecf4;
    --muted: #93a0bb;
    --accent: #4f8cff;
    --accent-ink: #ffffff;
    --good: #35c488;
    --warn: #e2b33c;
    --danger: #e2583c;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

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

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}

.topbar .brand { font-weight: 700; letter-spacing: .02em; }
.topbar nav a { margin-left: 18px; color: var(--muted); }
.topbar nav a.active, .topbar nav a:hover { color: var(--text); }

.container { max-width: 1100px; margin: 0 auto; padding: 24px; }

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

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }

label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }

input[type=text], input[type=email], input[type=number], input[type=password], select, textarea {
    width: 100%;
    padding: 9px 11px;
    background: #0f1420;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    margin-bottom: 14px;
}

textarea { font-family: inherit; resize: vertical; }

button, .btn {
    display: inline-block;
    background: var(--accent);
    color: var(--accent-ink);
    border: none;
    padding: 9px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

button.secondary, .btn.secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

button.small { padding: 5px 10px; font-size: 12.5px; }
button.danger { background: var(--danger); color: #fff; }
button:disabled { opacity: .4; cursor: not-allowed; }

/* Barra de acciones sobre la tabla de leads (borrado múltiple) */
.bulk-bar { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.inline-check { display: inline-flex; align-items: center; gap: 6px; margin: 0; font-size: 13px; cursor: pointer; }
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; margin: 0; }

pre.codigo { background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 12px; border-radius: 8px; overflow: auto; font-size: 12.5px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); font-size: 13.5px; vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 11.5px; font-weight: 600; }
.badge.nuevo { background: rgba(79,140,255,.18); color: var(--accent); }
.badge.contactado { background: rgba(226,179,60,.18); color: var(--warn); }
.badge.descartado { background: rgba(226,88,60,.18); color: var(--danger); }
.badge.cliente { background: rgba(53,196,136,.18); color: var(--good); }

.filters { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 4px; }
.filters > div { flex: 1; min-width: 140px; }
.filters button, .filters .btn { margin-bottom: 14px; }

.muted { color: var(--muted); }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash.ok { background: rgba(53,196,136,.15); color: var(--good); }
.flash.error { background: rgba(226,88,60,.15); color: var(--danger); }

.login-box { max-width: 360px; margin: 80px auto; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }