:root {
  --aha-red: #C8102E;
  --aha-red-bright: #E31837;
  --aha-black: #231F20;
  --aha-gray: #6D6E71;
  --aha-light: #f4f5f7;
  --aha-border: #d7d9dd;
  --ok: #2e9e4f;
  --shadow: 0 2px 12px rgba(0,0,0,.08);
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--aha-light);
  color: var(--aha-black);
  position: relative;
  min-height: 100vh;
}

/* Marca de agua: sello ATC fijo y centrado detrás de todo el contenido */
body::before {
  content: "";
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(85vw, 720px);
  height: min(85vw, 720px);
  background: url('/img/watermark.png') center / contain no-repeat;
  opacity: 1;
  pointer-events: none;
  z-index: 0;
}

/* El contenido queda por encima de la marca de agua */
.topbar, .tabs, .container { position: relative; z-index: 1; }

/* Header */
.topbar {
  background: #fff;
  border-bottom: 3px solid var(--aha-red);
  box-shadow: var(--shadow);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.topbar .brand {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .3px;
}
.topbar .brand span { color: var(--aha-red); }
/* Logo AHA de la cabecera */
.topbar .logo-img {
  height: 44px;
  width: auto;
  flex: none;
}
.topbar .heart {
  width: 34px; height: 34px;
  background: var(--aha-red);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  flex: none;
}
.topbar .spacer { flex: 1; }

/* Tabs / menús */
.tabs {
  display: flex;
  gap: 8px;
  padding: 14px 20px 0;
  max-width: 1000px;
  margin: 0 auto;
}
.tab {
  border: none;
  background: #e9eaed;
  color: var(--aha-gray);
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius) var(--radius) 0 0;
  cursor: pointer;
}
.tab.active {
  background: #fff;
  color: var(--aha-red);
  box-shadow: 0 -2px 8px rgba(0,0,0,.05);
}

/* Layout */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}
.card {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(2px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.card h2 {
  margin: 0 0 4px;
  font-size: 20px;
}
.muted { color: var(--aha-gray); font-size: 14px; margin: 0 0 18px; }

/* Form */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.field { display: flex; flex-direction: column; gap: 5px; }
.field.full { grid-column: 1 / -1; }
label { font-size: 13px; font-weight: 700; color: var(--aha-black); }
input, select, textarea {
  border: 1px solid var(--aha-border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.75);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--aha-red);
  box-shadow: 0 0 0 3px rgba(200,16,46,.12);
  background: #fff;
}
textarea { resize: vertical; min-height: 60px; }

.btn {
  border: none;
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s;
}
.btn-primary { background: var(--aha-red); color: #fff; }
.btn-primary:hover { background: var(--aha-red-bright); }
.btn-ghost { background: #eef0f3; color: var(--aha-black); }
.btn-ghost:hover { background: #e2e5e9; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }

/* Login */
.login-wrap {
  max-width: 380px;
  margin: 60px auto;
}
.login-wrap .card { text-align: center; }
.login-wrap .heart-big {
  width: 56px; height: 56px;
  background: var(--aha-red);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  margin: 0 auto 18px;
}

/* QR result */
.qr-panel {
  text-align: center;
  border-top: 1px dashed var(--aha-border);
  margin-top: 22px;
  padding-top: 22px;
}
.qr-panel img {
  width: 240px; height: 240px;
  border: 1px solid var(--aha-border);
  border-radius: 12px;
  padding: 8px;
  background: #fff;
}
.qr-code-label {
  font-family: monospace;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--aha-red);
  margin: 12px 0 4px;
}

/* Verificación / consulta */
.verify-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--ok); color: #fff;
  padding: 8px 16px; border-radius: 20px;
  font-weight: 700; font-size: 14px;
}
.result-grid {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 14px 20px;
  margin-top: 20px;
}
.result-photo {
  width: 130px; height: 160px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--aha-border);
  background: #f0f0f0;
}
.data-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
}
.data-item .k { font-size: 12px; color: var(--aha-gray); font-weight: 700; text-transform: uppercase; }
.data-item .v { font-size: 15px; }
.status-pass { color: var(--ok); font-weight: 700; }
.status-fail { color: var(--aha-red); font-weight: 700; }

.alert {
  padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-top: 14px;
}
.alert-error { background: #fde8ea; color: var(--aha-red); }
.alert-ok { background: #e6f4ea; color: var(--ok); }

.hidden { display: none !important; }

@media (max-width: 640px) {
  .grid, .data-list { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; justify-items: center; }
}