*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
    body { font-family: 'Plus Jakarta Sans', sans-serif; background: #0f1626; color: #e2e8f0; line-height: 1.6; }
    a { text-decoration: none; color: inherit; }
    img { max-width: 100%; display: block; }

    /* ── HEADER ─────────────────────────────────────────────── */
    .site-header {
      background: rgba(15,22,38,0.97);
      backdrop-filter: blur(12px);
      padding: 14px 0;
      position: sticky; top: 0; z-index: 200;
      border-bottom: 1px solid rgba(255,255,255,0.07);
    }
    .hdr { max-width: 1160px; margin: 0 auto; padding: 0 24px;
           display: flex; justify-content: space-between; align-items: center; }
    .hdr-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 15px; color: #fff; }
    .hdr-logo img { height: 36px; border-radius: 6px; }
    .hdr-logo em { color: #00d4ff; font-style: normal; }
    .hdr-back { display: inline-flex; align-items: center; gap: 7px; color: rgba(255,255,255,0.6);
                font-size: 13px; font-weight: 500; transition: color .2s; }
    .hdr-back:hover { color: #fff; }

    /* ── HERO ────────────────────────────────────────────────── */
    .hero {
      background: linear-gradient(135deg, #0f1626 0%, #1a1042 50%, #0d1f3c 100%);
      padding: 56px 24px 48px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(124,58,237,0.18), transparent);
      pointer-events: none;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 7px;
      background: rgba(239,68,68,0.15); border: 1px solid rgba(239,68,68,0.4);
      color: #fca5a5; border-radius: 99px; padding: 5px 16px;
      font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .6px;
      margin-bottom: 22px;
    }
    .hero-badge i { color: #f87171; font-size: 10px; animation: blink 1.2s infinite; }
    @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }
    .hero h1 {
      font-size: clamp(1.9rem, 4.5vw, 3rem);
      font-weight: 800; line-height: 1.15;
      color: #fff; margin-bottom: 16px;
    }
    .hero h1 span { color: #a78bfa; }
    .hero-sub { font-size: 1.05rem; color: rgba(255,255,255,0.65); max-width: 560px; margin: 0 auto 32px; }
    .price-display {
      display: inline-flex; align-items: baseline; gap: 8px;
      background: rgba(124,58,237,0.15); border: 1px solid rgba(124,58,237,0.35);
      border-radius: 14px; padding: 14px 28px; margin-bottom: 10px;
    }
    .price-amount { font-size: 2.8rem; font-weight: 800; color: #a78bfa; line-height: 1; }
    .price-label { font-size: .88rem; color: rgba(255,255,255,0.55); }
    .price-installment { font-size: .82rem; color: rgba(255,255,255,0.45); margin-bottom: 0; }

    /* ── CONVOCATORIAS ──────────────────────────────────────── */
    .convocatorias-section {
      max-width: 960px; margin: 0 auto; padding: 52px 24px 0;
    }
    .section-label {
      text-align: center; font-size: .75rem; font-weight: 700;
      text-transform: uppercase; letter-spacing: 1.5px; color: #7c3aed;
      margin-bottom: 12px;
    }
    .section-title {
      text-align: center; font-size: 1.7rem; font-weight: 800;
      color: #fff; margin-bottom: 32px;
    }
    .conv-grid {
      display: grid; grid-template-columns: repeat(3,1fr); gap: 18px;
    }
    .conv-card {
      background: rgba(255,255,255,0.04);
      border: 2px solid rgba(255,255,255,0.08);
      border-radius: 16px; padding: 24px 20px;
      cursor: pointer;
      transition: all .2s;
      position: relative;
      text-align: center;
    }
    .conv-card:hover { border-color: rgba(124,58,237,0.5); background: rgba(124,58,237,0.08); }
    .conv-card.selected {
      border-color: #7c3aed;
      background: rgba(124,58,237,0.12);
      box-shadow: 0 0 0 3px rgba(124,58,237,0.2);
    }
    .conv-card.sold-out { opacity: 0.45; cursor: not-allowed; }
    .conv-badge {
      position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
      white-space: nowrap;
      font-size: 10.5px; font-weight: 800; text-transform: uppercase;
      letter-spacing: .5px; padding: 3px 12px; border-radius: 99px;
    }
    .badge-hot { background: #ef4444; color: #fff; }
    .badge-popular { background: #7c3aed; color: #fff; }
    .badge-next { background: #0369a1; color: #fff; }
    .conv-icon { font-size: 1.8rem; margin-bottom: 12px; }
    .conv-month { font-size: 1.25rem; font-weight: 800; color: #fff; margin-bottom: 4px; }
    .conv-year { font-size: .82rem; color: rgba(255,255,255,0.5); margin-bottom: 14px; }
    .conv-plazas {
      display: inline-flex; align-items: center; gap: 6px;
      background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.3);
      border-radius: 99px; padding: 4px 12px;
      font-size: 11.5px; font-weight: 700; color: #fca5a5;
      margin-bottom: 12px;
    }
    .conv-plazas i { font-size: 9px; color: #f87171; }
    .conv-detail { font-size: .8rem; color: rgba(255,255,255,0.45); line-height: 1.5; }
    .conv-check {
      position: absolute; top: 14px; right: 14px;
      width: 22px; height: 22px; border-radius: 50%;
      background: #7c3aed; display: none;
      align-items: center; justify-content: center;
      font-size: 11px; color: #fff;
    }
    .conv-card.selected .conv-check { display: flex; }

    /* ── MAIN LAYOUT ────────────────────────────────────────── */
    .checkout-layout {
      max-width: 960px; margin: 48px auto 0; padding: 0 24px;
      display: grid; grid-template-columns: 1fr 380px; gap: 32px;
      align-items: start;
    }

    /* ── FORM CARD ──────────────────────────────────────────── */
    .form-card {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 20px; padding: 36px 32px;
    }
    .form-card h2 { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 6px; }
    .form-card .form-intro { font-size: .88rem; color: rgba(255,255,255,0.5); margin-bottom: 28px; }
    .form-section-title {
      font-size: .7rem; font-weight: 700; text-transform: uppercase;
      letter-spacing: 1.2px; color: #7c3aed; margin: 24px 0 14px;
    }
    .field { margin-bottom: 16px; }
    .field label { display: block; font-size: .83rem; font-weight: 600; color: rgba(255,255,255,0.7); margin-bottom: 6px; }
    .field input, .field select, .field textarea {
      width: 100%; background: rgba(255,255,255,0.06);
      border: 1.5px solid rgba(255,255,255,0.12);
      border-radius: 10px; padding: 12px 14px;
      color: #fff; font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: .95rem; transition: border-color .2s, background .2s;
      appearance: none;
    }
    .field input::placeholder, .field select::placeholder, .field textarea::placeholder { color: rgba(255,255,255,0.3); }
    .field input:focus, .field select:focus, .field textarea:focus {
      outline: none; border-color: #7c3aed; background: rgba(124,58,237,0.08);
    }
    .field select option { background: #1a1042; color: #fff; }
    .field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field input.error, .field select.error { border-color: #f87171; }

    .iban-hint {
      font-size: .75rem; color: rgba(255,255,255,0.35);
      margin-top: 6px; line-height: 1.4;
    }

    /* Privacy + Submit */
    .privacy-check { display: flex; align-items: flex-start; gap: 10px; margin: 20px 0 24px; }
    .privacy-check input[type=checkbox] { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; accent-color: #7c3aed; }
    .privacy-check label { font-size: .82rem; color: rgba(255,255,255,0.55); line-height: 1.5; }
    .privacy-check a { color: #a78bfa; }

    .btn-submit {
      width: 100%; padding: 17px; border: none;
      background: linear-gradient(135deg, #7c3aed, #5b21b6);
      color: #fff; border-radius: 12px; font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: 1.05rem; font-weight: 800; cursor: pointer;
      transition: all .2s; box-shadow: 0 6px 20px rgba(124,58,237,0.4);
      display: flex; align-items: center; justify-content: center; gap: 10px;
    }
    .btn-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(124,58,237,0.5); }
    .btn-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; }

    /* ── ORDER SUMMARY SIDEBAR ──────────────────────────────── */
    .summary-card {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 20px; padding: 28px;
      position: sticky; top: 80px;
    }
    .summary-card h3 { font-size: 1rem; font-weight: 800; color: #fff; margin-bottom: 20px; }
    .summary-row {
      display: flex; justify-content: space-between; align-items: center;
      padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.07);
      font-size: .88rem;
    }
    .summary-row:last-of-type { border-bottom: none; }
    .summary-row span:first-child { color: rgba(255,255,255,0.55); }
    .summary-row strong { color: #fff; font-weight: 700; }
    .summary-total {
      background: rgba(124,58,237,0.15); border: 1px solid rgba(124,58,237,0.3);
      border-radius: 12px; padding: 16px; margin: 16px 0; text-align: center;
    }
    .summary-total .total-label { font-size: .75rem; color: rgba(255,255,255,0.5);
                                   text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
    .summary-total .total-amount { font-size: 2.2rem; font-weight: 800; color: #a78bfa; line-height: 1; }
    .summary-total .total-iva { font-size: .75rem; color: rgba(255,255,255,0.4); margin-top: 4px; }

    .trust-badges { margin-top: 20px; }
    .trust-badge { display: flex; align-items: center; gap: 10px;
                   padding: 8px 0; font-size: .8rem; color: rgba(255,255,255,0.5); }
    .trust-badge i { width: 18px; text-align: center; color: #7c3aed; }

    .wa-sidebar {
      background: linear-gradient(135deg, rgba(37,211,102,0.1), rgba(37,211,102,0.04));
      border: 1px solid rgba(37,211,102,0.25);
      border-radius: 14px; padding: 16px; margin-top: 20px;
      text-align: center;
    }
    .wa-sidebar i.fab { font-size: 1.6rem; color: #25D366; display: block; margin-bottom: 8px; }
    .wa-sidebar p { font-size: .8rem; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
    .btn-wa-sidebar {
      display: flex; align-items: center; justify-content: center; gap: 8px;
      background: #25D366; color: #fff; border-radius: 8px;
      padding: 10px 16px; font-size: .88rem; font-weight: 700;
      transition: background .2s;
    }
    .btn-wa-sidebar:hover { background: #1ebe5d; }

    /* ── SUCCESS STATE ──────────────────────────────────────── */
    .success-state {
      display: none; text-align: center; padding: 48px 32px;
    }
    .success-state.visible { display: block; }
    .success-icon { font-size: 4rem; color: #16a34a; margin-bottom: 20px; }
    .success-state h2 { font-size: 1.6rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
    .success-state p { color: rgba(255,255,255,0.6); margin-bottom: 24px; font-size: .95rem; }
    .success-steps { text-align: left; max-width: 380px; margin: 0 auto 28px; }
    .success-step {
      display: flex; gap: 14px; margin-bottom: 16px; align-items: flex-start;
    }
    .ss-num {
      width: 28px; height: 28px; border-radius: 50%;
      background: rgba(22,163,74,0.2); border: 1px solid rgba(22,163,74,0.4);
      color: #4ade80; display: flex; align-items: center; justify-content: center;
      font-size: .78rem; font-weight: 800; flex-shrink: 0; margin-top: 1px;
    }
    .ss-text strong { display: block; font-size: .9rem; color: #fff; font-weight: 700; }
    .ss-text span { font-size: .82rem; color: rgba(255,255,255,0.55); }

    /* ── FOOTER ─────────────────────────────────────────────── */
    footer {
      margin-top: 80px; background: #060d1a;
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 24px; text-align: center;
      font-size: .8rem; color: rgba(255,255,255,0.35);
    }
    footer a { color: rgba(124,58,237,0.8); }

    /* ── RESPONSIVE ─────────────────────────────────────────── */
    @media (max-width: 780px) {
      .checkout-layout { grid-template-columns: 1fr; }
      .summary-card { position: static; }
      .conv-grid { grid-template-columns: 1fr; gap: 16px; }
      .field-row { grid-template-columns: 1fr; }
    }
    @media (max-width: 480px) {
      .form-card { padding: 24px 18px; }
    }

/* ── Elementos ocultados inicialmente ─────────────────────── */
input[name="botcheck"] { display: none !important; }
#spin-icon             { display: none; }

/* ── Botón WhatsApp del estado de éxito ───────────────────── */
.wa-success-btn {
    display: inline-flex; align-items: center; gap: 10px;
    background: #25D366; color: #fff;
    padding: 14px 28px; border-radius: 10px;
    font-weight: 700; font-size: .95rem;
}