/* ============================================================
   Bulk-SMS-Sender — hoja de estilos del panel
   Sin dependencias externas (funciona en cualquier hosting).
   ============================================================ */

:root {
    --bg: #0f1216;
    --panel: #171c22;
    --panel-2: #1e252d;
    --line: #2b333d;
    --text: #e6edf3;
    --muted: #98a4b3;
    --accent: #3ea6ff;
    --ok: #2ecc71;
    --warn: #f1c40f;
    --bad: #e74c3c;
    --info: #4aa3df;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

.topbar {
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    padding: 12px 18px; background: var(--panel); border-bottom: 1px solid var(--line);
    flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.user { display: flex; align-items: center; gap: 10px; }
.inline { display: inline; }

.mainnav {
    display: flex; flex-wrap: wrap; gap: 4px;
    padding: 8px 14px; background: var(--panel-2); border-bottom: 1px solid var(--line);
}
.mainnav a {
    padding: 6px 11px; border-radius: var(--radius); color: var(--muted); font-size: 14px;
    border: 1px solid transparent;
}
.mainnav a:hover { color: var(--text); background: #223039; text-decoration: none; }
.mainnav a.active { color: #fff; background: #22415e; border-color: #2f5c85; }

.container { max-width: 1180px; margin: 0 auto; padding: 22px 16px 60px; }
h1 { font-size: 24px; margin: 6px 0 18px; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 18px 0 8px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono, code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { background: #10161c; padding: 2px 5px; border-radius: 4px; font-size: 13px; }
pre {
    background: #0c1116; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 12px; overflow-x: auto; font-size: 12.5px; max-height: 420px;
}

.card {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 16px; margin-bottom: 18px;
}
.card > :first-child { margin-top: 0; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.kpi { background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.kpi .value { font-size: 24px; font-weight: 600; display: block; }
.kpi .label { color: var(--muted); font-size: 13px; }

.form-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.form-grid .span-2 { grid-column: 1 / -1; }
label { display: block; font-size: 14px; color: var(--muted); }
input[type=text], input[type=number], input[type=password], input[type=email], select, textarea {
    width: 100%; margin-top: 6px; padding: 9px 11px; background: #0d1319; color: var(--text);
    border: 1px solid var(--line); border-radius: 6px; font-size: 14px; font-family: inherit;
}
textarea { min-height: 130px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid #2f5c85; border-color: #2f5c85; }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; }
legend { color: var(--muted); font-size: 13px; padding: 0 6px; }
.checkline { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text); }
.checkline input { width: auto; margin: 0; }

.btn {
    display: inline-block; padding: 9px 14px; border-radius: 6px; border: 1px solid var(--line);
    background: #223039; color: var(--text); cursor: pointer; font-size: 14px; font-family: inherit;
}
.btn:hover { background: #2b3d49; text-decoration: none; }
.btn-primary { background: #1d5f9c; border-color: #2f7ec4; color: #fff; }
.btn-primary:hover { background: #2470b8; }
.btn-danger { background: #6d2a25; border-color: #8f3a33; }
.btn-small { padding: 5px 9px; font-size: 13px; }

.badge {
    display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px;
    background: #26313a; color: var(--muted); border: 1px solid var(--line);
}
.badge-ok { background: #16351f; color: #6ee7a0; border-color: #23572f; }
.badge-bad { background: #3a1b18; color: #ff9d92; border-color: #5e2b25; }
.badge-warn { background: #3a3216; color: #f7d774; border-color: #5c4d20; }
.badge-info { background: #16303f; color: #7fc4ff; border-color: #23536d; }

.alert { padding: 11px 14px; border-radius: var(--radius); margin-bottom: 14px; border: 1px solid var(--line); }
.alert-ok { background: #14301d; border-color: #245a34; }
.alert-info { background: #142a38; border-color: #24506a; }
.alert-warn { background: #322c14; border-color: #5b4f22; }
.alert-bad { background: #341713; border-color: #5f2a24; }
.alert ul { margin: 6px 0 0; padding-left: 20px; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th, .table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { color: var(--muted); font-weight: 500; font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; }
.table tr:hover td { background: #1b232b; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.actions form { margin: 0; }
.toolbar { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }

.footer { padding: 18px; border-top: 1px solid var(--line); text-align: center; font-size: 12.5px; }

.install-body { background: var(--bg); }
.install { max-width: 1000px; margin: 0 auto; padding: 24px 16px 80px; }

.preview-box {
    background: #0d1319; border: 1px solid var(--line); border-radius: 6px;
    padding: 10px 12px; margin-bottom: 8px; font-size: 14px; white-space: pre-wrap;
}
.hint { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
.split { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 780px) { .split { grid-template-columns: 1fr; } }