:root {
  --bg: #0e1117;
  --panel: #161b22;
  --panel-2: #1c232d;
  --border: #2a313c;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #25d366;
  --accent-dark: #1da851;
  --danger: #f85149;
  --ok: #3fb950;
  --bad: #f85149;
}

* { 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;
}

h1, h2, h3 { margin: 0 0 .5rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: .95rem; margin-top: 1.25rem; color: var(--muted); font-weight: 600; }

.muted { color: var(--muted); font-size: .9rem; }
.error { color: var(--danger); font-size: .9rem; margin-top: .5rem; }

/* --- Brand --- */
.brand { display: flex; align-items: center; gap: .55rem; }
.brand-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
}

/* --- Login --- */
.login-body {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
}
.login-card {
  background: var(--panel); border: 1px solid var(--border);
  padding: 2rem; border-radius: 14px; width: 320px; text-align: center;
}
.login-card h1 { font-size: 1.25rem; }
.login-card form { margin-top: 1.5rem; text-align: left; display: flex; flex-direction: column; gap: .5rem; }
.login-card label { font-size: .85rem; color: var(--muted); }

input, textarea, select {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: .6rem .7rem; border-radius: 8px; font-size: .95rem; width: 100%; font-family: inherit;
}
input:focus, textarea:focus { outline: none; border-color: var(--accent); }

button {
  background: var(--accent); color: #06210f; border: none; font-weight: 600;
  padding: .6rem .9rem; border-radius: 8px; cursor: pointer; font-size: .9rem;
}
button:hover { background: var(--accent-dark); color: #fff; }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--panel-2); color: var(--text); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }

/* --- Topbar --- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: .85rem 1.25rem; border-bottom: 1px solid var(--border); background: var(--panel);
}
.topbar-right { display: flex; align-items: center; gap: .75rem; }

/* --- Tabs / navegación --- */
.tabs { display: flex; gap: .25rem; }
.tab {
  background: transparent; color: var(--muted); border: none; border-radius: 8px;
  padding: .45rem .9rem; font-weight: 600; font-size: .9rem; cursor: pointer;
}
.tab:hover { background: var(--panel-2); color: var(--text); }
.tab.is-active { background: var(--panel-2); color: var(--text); }
.tab.is-active:hover { background: var(--panel-2); }

.pill {
  font-size: .8rem; padding: .25rem .65rem; border-radius: 999px; font-weight: 600;
}
.pill-ok { background: rgba(63,185,80,.15); color: var(--ok); }
.pill-bad { background: rgba(248,81,73,.15); color: var(--bad); }
.pill-muted { background: var(--panel-2); color: var(--muted); }

/* --- Layout --- */
.layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem;
  padding: 1.25rem; max-width: 1100px; margin: 0 auto;
}
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.25rem;
}
.card-wide { grid-column: 1 / -1; }
/* `hidden` debe ganar a `display: grid` de .layout (misma especificidad si no) */
.layout[hidden] { display: none; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: .75rem; }
.card-head input { max-width: 280px; }

/* --- Vinculación --- */
.link-content { text-align: center; padding: .5rem 0; }
.link-content img { border-radius: 10px; background: #fff; padding: 10px; }
.link-hint { margin-top: .75rem; font-size: .85rem; color: var(--muted); }
.link-actions { margin-top: 1rem; text-align: center; }
.ready-badge { font-size: 2.5rem; }
.pair-box { margin-top: 1rem; border-top: 1px solid var(--border); padding-top: .75rem; }
.pair-box summary { cursor: pointer; font-size: .9rem; color: var(--muted); }
.pair-code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 2rem; font-weight: 700; letter-spacing: .15em; margin: .5rem 0; }

/* --- Stats --- */
.stats { display: flex; gap: 1rem; }
.stat {
  flex: 1; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 10px; padding: .75rem; text-align: center;
}
.stat-num { display: block; font-size: 1.6rem; font-weight: 700; }
.stat-num.ok { color: var(--ok); }
.stat-num.bad { color: var(--bad); }
.stat-num.warn { color: #d29922; }
.stat-label { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }

/* --- Send form --- */
.send-form { display: flex; flex-direction: column; gap: .5rem; margin-top: .5rem; }
.result { font-size: .85rem; margin: .25rem 0 0; }
.result.ok { color: var(--ok); }
.result.bad { color: var(--bad); }

/* --- Tabla --- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; }
td.msg { max-width: 360px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badge { font-size: .75rem; padding: .15rem .5rem; border-radius: 6px; font-weight: 600; }
.badge.sent { background: rgba(63,185,80,.15); color: var(--ok); }
.badge.failed { background: rgba(248,81,73,.15); color: var(--bad); }
.badge.queued { background: rgba(210,153,34,.15); color: #d29922; }

.pager { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 1rem; }

/* --- API Token --- */
.token-row { display: flex; gap: .5rem; margin-top: .75rem; }
.token-row input { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: .85rem; }
#toggle-token-btn { flex: 0 0 auto; padding: .6rem .65rem; line-height: 1; }
#token-meta { margin-top: .5rem; }
code {
  background: var(--panel-2); border: 1px solid var(--border);
  padding: .1rem .35rem; border-radius: 5px; font-size: .85em;
}

/* --- Snippets de código --- */
.snippet { margin-top: 1rem; }
.snippet-head {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  font-size: .85rem; color: var(--muted); margin-bottom: .35rem;
}
.snippet-head code { font-size: .9em; }
.snippet pre {
  margin: 0; background: #0a0d12; border: 1px solid var(--border); border-radius: 8px;
  padding: .85rem 1rem; overflow-x: auto; font-size: .82rem; line-height: 1.5;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; color: #c9d1d9;
}

@media (max-width: 720px) {
  .layout { grid-template-columns: 1fr; }
}