:root{
  --navy: #12181f;
  --navy-soft: #1c2632;
  --gold: #96702a;
  --gold-light: #e0b45c;
  --line: #dde2ea;
  --text: #12181f;
  --muted: #4a5568;
  --accent: #1c6dd0;
  --accent2: #0fb5a8;
  --danger: #b3261e;
  --danger-bg: #fdecea;
  --ok-bg: #eaf7f2;
  --serif: 'Georgia', 'Times New Roman', serif;
  --sans: 'Segoe UI', Arial, sans-serif;
}

*{ margin:0; padding:0; box-sizing:border-box; }

body {
  min-height: 100vh;
  font-family: var(--sans);
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-soft) 320px, #f4f6f9 320px);
  color: var(--text);
  display:flex;
  flex-direction:column;
}

.band{ height:6px; background: var(--gold); }

header{
  padding: 22px 24px 8px;
  display:flex;
  align-items:center;
  gap:12px;
}

.seal{
  width:34px; height:34px;
  border: 1.5px solid var(--gold);
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--serif);
  font-size:14px;
  color: var(--gold-light);
  flex-shrink:0;
}

.brand-text{
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: #eef1f6;
}

.container {
  flex:1;
  max-width: 520px;
  width:100%;
  margin: 0 auto;
  padding: 24px 20px 60px;
  display:flex;
  align-items:flex-start;
  justify-content:center;
}

.card {
  width:100%;
  background: #ffffff;
  padding: 34px 30px;
  border-radius: 10px;
  box-shadow: 0 20px 45px rgba(18,24,31,0.18);
  border-top: 3px solid var(--gold);
}

.kicker{
  text-align:center;
  font-size: 11px;
  font-weight:700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.titulo-principal {
  text-align: center;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  color: var(--navy);
  margin-bottom: 6px;
}

.subtitulo{
  text-align:center;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 26px;
}

label {
  font-weight: 600;
  font-size: 13px;
  display: block;
  margin-top: 4px;
  color: var(--text);
}

.input-group {
  margin-top: 8px;
  position:relative;
}

.input-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
  font-size: 15px;
  box-sizing: border-box;
  transition: 0.2s;
  font-family: var(--sans);
}

.input-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(28,109,208,0.14);
}

.input-group input.error{
  border-color: var(--danger);
}

.hint{
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
  min-height: 16px;
}

.hint.error{
  color: var(--danger);
  font-weight:600;
}

.buttons {
  margin-top: 22px;
  display: flex;
  gap: 10px;
}

.btn-primary, .btn-secondary {
  flex: 1;
  border: none;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  font-family: var(--sans);
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  transition: background 0.2s ease, opacity 0.2s ease, transform 0.1s ease;
}

.btn-primary {
  background: var(--navy);
  color: #fff;
}

.btn-primary:hover:not(:disabled) { background: var(--navy-soft); }
.btn-primary:active:not(:disabled) { transform: translateY(1px); }

.btn-primary:disabled{
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: #eef1f6;
  color: var(--navy);
}

.btn-secondary:hover:not(:disabled) { background: #e2e7ee; }
.btn-secondary:disabled{ opacity:0.6; cursor:not-allowed; }

.spinner{
  width:15px; height:15px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius:50%;
  animation: spin 0.7s linear infinite;
  display:none;
}

.btn-primary.loading .spinner{ display:inline-block; }
.btn-primary.loading .btn-label{ opacity:0.85; }

@keyframes spin{ to{ transform: rotate(360deg); } }

.resultado {
  margin-top: 24px;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn{
  from{ opacity:0; transform: translateY(4px); }
  to{ opacity:1; transform: translateY(0); }
}

.msg{
  padding: 13px 15px;
  border-radius: 8px;
  font-size: 14px;
  font-weight:600;
  display:flex;
  align-items:center;
  gap:8px;
}

.msg.ok{ background: var(--ok-bg); color: #0f7a52; border-left: 4px solid #0f7a52; }
.msg.err{ background: var(--danger-bg); color: var(--danger); border-left: 4px solid var(--danger); }

.tabla-wrap{
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.tabla {
  width: 100%;
  border-collapse: collapse;
}

.tabla th {
  background: var(--navy);
  color: #fff;
  padding: 10px 8px;
  font-size: 12px;
  text-align:left;
  font-weight:600;
}

.tabla td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  vertical-align: middle;
}

.tabla tr:last-child td{ border-bottom:none; }
.tabla tr:hover td { background: #f7f9fc; }

.tabla td.num { text-align: right; font-variant-numeric: tabular-nums; }
.tabla td.txt { text-align: left; }

.btn-download {
  background: var(--accent);
  border: none;
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition: background 0.2s ease, transform 0.1s ease;
}

.btn-download:hover:not(:disabled) { background: #1558a8; }
.btn-download:active:not(:disabled) { transform: translateY(1px); }
.btn-download:disabled{ opacity:0.5; cursor:not-allowed; }

.btn-download i { font-size: 13px; }

footer{
  text-align:center;
  font-size: 11px;
  color: var(--muted);
  padding: 16px;
}

@media (max-width: 480px){
  .card{ padding: 26px 20px; }
  .titulo-principal{ font-size: 19px; }
}

.btn-volver{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 18px;
  padding: 12px;
  border-radius: 8px;
  background: #eef1f6;
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
  font-family: var(--sans);
  text-decoration: none;
  box-sizing: border-box;
  transition: background 0.2s ease, transform 0.1s ease;
}
.btn-volver:hover{ background: #e2e7ee; }
.btn-volver:active{ transform: translateY(1px); }