:root {
  --pcnc-black: #0c0c0c;
  --pcnc-yellow: #fdbe10;
  --pcnc-yellow-dark: #e0a600;
  --pcnc-white: #ffffff;
  --pcnc-gray: #6e6e6e;
  --pcnc-gray-light: #ebebeb;
  --whatsapp-green: #25d366;
  --whatsapp-green-dark: #1ebe5d;
  --radius: 14px;
  --font: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ---------- Base: mobile first ---------- */

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--pcnc-black);
  color: var(--pcnc-black);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-tap-highlight-color: transparent;
}

.topbar {
  background: var(--pcnc-black);
  padding: calc(12px + var(--safe-top)) 16px 12px;
  border-bottom: 3px solid var(--pcnc-yellow);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.topbar .logo {
  height: 40px;
  width: auto;
  border-radius: 4px;
}

.wrapper {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px 12px calc(20px + var(--safe-bottom));
  background: linear-gradient(180deg, var(--pcnc-black) 0%, #1a1a1a 45%, var(--pcnc-black) 100%);
}

.card {
  background: var(--pcnc-white);
  width: 100%;
  max-width: 460px;
  border-radius: var(--radius);
  padding: 24px 18px 20px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
  border-top: 5px solid var(--pcnc-yellow);
}

.card h1 {
  margin: 0 0 6px;
  font-size: 1.4rem;
  letter-spacing: 0.3px;
  color: var(--pcnc-black);
}

.subtitle {
  margin: 0 0 22px;
  color: var(--pcnc-gray);
  font-size: 0.92rem;
  line-height: 1.45;
}

.field {
  margin-bottom: 16px;
  text-align: left;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--pcnc-black);
}

/* font-size: 16px evita el auto-zoom de iOS al enfocar inputs */
.field input,
.field select {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1.5px solid var(--pcnc-gray-light);
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
  background: var(--pcnc-white);
  color: var(--pcnc-black);
  transition: border-color 0.15s ease;
  -webkit-appearance: none;
  appearance: none;
}

.field select {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236e6e6e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
  padding-right: 38px;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--pcnc-yellow);
}

button[type='submit'] {
  width: 100%;
  min-height: 52px;
  margin-top: 6px;
  padding: 14px 16px;
  background: var(--whatsapp-green);
  color: var(--pcnc-white);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.15s ease, transform 0.1s ease;
}

button[type='submit']:hover:not(:disabled) {
  background: var(--whatsapp-green-dark);
}

button[type='submit']:active:not(:disabled) {
  transform: scale(0.98);
}

button[type='submit']:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.wa-icon {
  font-size: 1.15rem;
}

.error {
  margin: 14px 0 0;
  padding: 10px 12px;
  background: #fdecea;
  color: #a3241a;
  border: 1px solid #f4c7c3;
  border-radius: 8px;
  font-size: 0.85rem;
}

.footer {
  text-align: center;
  padding: 14px 16px calc(14px + var(--safe-bottom));
  background: var(--pcnc-black);
  color: var(--pcnc-gray-light);
  font-size: 0.72rem;
  line-height: 1.4;
  border-top: 1px solid #222;
  flex-shrink: 0;
}

/* ---------- Mejoras progresivas para pantallas más grandes ---------- */

@media (min-width: 600px) {
  .topbar {
    padding: calc(18px + var(--safe-top)) 32px 18px;
  }

  .topbar .logo {
    height: 56px;
  }

  .wrapper {
    align-items: center;
    padding: 40px 16px;
  }

  .card {
    padding: 36px 32px 28px;
    border-radius: 16px;
  }

  .card h1 {
    font-size: 1.7rem;
  }

  .subtitle {
    font-size: 0.95rem;
    margin-bottom: 26px;
  }

  .footer {
    font-size: 0.78rem;
  }
}