/* assets/style.css — estilos simples y modernos */
:root{
  --bg:#0f172a;        /* slate-900 */
  --card:#111827;      /* gray-900 */
  --muted:#94a3b8;     /* slate-400 */
  --text:#e5e7eb;      /* gray-200 */
  --accent:#38bdf8;    /* sky-400 */
  --accent-2:#22c55e;  /* green-500 */
  --warning:#f59e0b;   /* amber-500 */
  --danger:#ef4444;    /* red-500 */
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 80% -20%, #1f2937 0%, var(--bg) 60%), var(--bg);
  color:var(--text);
}

.container{
  max-width: 920px;
  margin: 0 auto;
  padding: 24px;
}

.topbar{
  display:flex;
  justify-content: space-between;
  align-items:center;
  padding: 12px 0 24px;
}
.brand{font-weight:700; letter-spacing:.2px}
.user{display:flex; gap:12px; align-items:center}
.user-email{font-size:.95rem; color:var(--muted)}
.logout{
  color: var(--danger);
  text-decoration:none;
  border:1px solid rgba(239,68,68,.4);
  padding:.45rem .7rem; border-radius:.7rem;
  transition: .2s ease;
}
.logout:hover{ background: rgba(239,68,68,.1) }

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.00));
  border:1px solid rgba(255,255,255,.06);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}

.center{ text-align:center }

h1{ font-size: clamp(1.6rem, 1.2rem + 2vw, 2.2rem); margin:.2rem 0 1rem }
h2{ font-size: 1.4rem; margin:.2rem 0 .7rem }
h3{ font-size: 1.1rem; margin:.2rem 0 .6rem }
.muted{ color: var(--muted) }
.small{ font-size:.9rem }

.form{
  display:grid;
  gap:.7rem;
  max-width:520px;
  margin: 16px auto 0;
}
label{ font-weight:600; color: var(--text) }
input[type="email"]{
  background:#0b1220;
  border:1px solid rgba(255,255,255,.08);
  padding:.8rem 1rem;
  border-radius: .7rem;
  color:var(--text);
  outline:none;
}
input[type="email"]::placeholder{ color:#6b7280 }
button, .btn{
  display:inline-block;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color:#051018;
  font-weight:700;
  border:none;
  padding:.8rem 1.1rem;
  border-radius:.8rem;
  cursor:pointer;
  text-decoration:none;
  transition: transform .06s ease, box-shadow .2s ease;
  box-shadow: 0 8px 18px rgba(34,197,94,.15);
}
button:hover, .btn:hover{ transform: translateY(-1px) }
button:active, .btn:active{ transform: translateY(0) }

.grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap:12px;
  margin-top:14px;
}

.btn.disabled{
  background: #1f2937;
  color: #9ca3af;
  cursor:not-allowed;
  box-shadow:none;
}

.warning{
  background: rgba(245, 158, 11, .08);
  border:1px dashed rgba(245, 158, 11, .6);
  color:#fbbf24;
  padding:.8rem 1rem;
  border-radius:.7rem;
  margin-top:14px;
}

.footer{ text-align:center; color:var(--muted); margin-top:22px }
.help{ margin-top:12px }
.help summary{ cursor:pointer; color:var(--accent) }