:root {
  color-scheme: light;

  /* Paleta oficial Intelecta */
  --brand-blue-dark: #113952;
  --brand-blue-medium: #014766;
  --brand-blue-light: #2f6587;
  --brand-cyan: #00acc9;
  --brand-cyan-medium: #68dfff;
  --brand-cyan-light: #baf3fc;
  --brand-green: #31d4a9;
  --brand-green-medium: #6effb5;
  --brand-green-light: #abffcd;
  --rgb-blue-dark: 17,57,82;
  --rgb-cyan: 0,172,201;
  --rgb-black: 0,0,0;

  /* Neutros / estados */
  --neutral-white: #ffffff;
  --neutral-paper: #f4f8f9;
  --neutral-ink: #243846;
  --neutral-muted: #607282;
  --neutral-line: #cbd9de;
  --neutral-dark-paper: #082535;
  --neutral-dark-surface: #0d3042;
  --neutral-dark-line: #31586a;
  --neutral-dark-ink: #d8e9ed;
  --neutral-dark-muted: #a7c2c9;
  --danger: #c93838;

  /* Transparencias */
  --alpha-blue-10: rgba(var(--rgb-blue-dark),.10);
  --alpha-cyan-16: rgba(var(--rgb-cyan),.16);
  --alpha-black-25: rgba(var(--rgb-black),.25);

  /* Semánticos */
  --navy: var(--brand-blue-dark);
  --cyan: var(--brand-cyan);
  --cyan-light: var(--brand-cyan-medium);
  --ink: var(--neutral-ink);
  --muted: var(--neutral-muted);
  --paper: var(--neutral-paper);
  --surface: var(--neutral-white);
  --line: var(--neutral-line);
}* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { padding: 2px; background: transparent; color: var(--ink); font: 15px/1.45 "Reddit Sans", Arial, sans-serif; }
.contact-card { padding: 30px; border-radius: 22px; background: var(--surface); }
h2 { margin: 0 0 8px; color: var(--navy); font: 800 clamp(25px, 4vw, 34px)/1.08 "Be Vietnam Pro", Arial, sans-serif; }
.intro { margin: 0 0 24px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
label { color: var(--navy); font-weight: 700; }
.required { color: var(--cyan); }
input, select { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); font: inherit; }
input:focus, select:focus { outline: 3px solid var(--alpha-cyan-16); border-color: var(--cyan); }
.captcha-row { display: grid; grid-template-columns: minmax(0,1fr) 122px 40px; gap: 8px; align-items: stretch; }
.captcha-row img { width: 122px; height: 48px; object-fit: cover; border: 1px solid var(--line); border-radius: 9px; background: var(--neutral-white); }
.reload { border: 1px solid var(--line); border-radius: 9px; background: var(--paper); color: var(--navy); cursor: pointer; font-size: 22px; }
.privacy { display: flex; gap: 10px; align-items: flex-start; margin-top: 20px; color: var(--muted); font-size: 13px; }
.privacy input { width: 18px; min-height: 18px; margin: 2px 0 0; accent-color: var(--cyan); }
a { color: var(--cyan); font-weight: 700; }
.actions { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; }
.secure { color: var(--muted); font-size: 12px; }
.submit { min-height: 48px; padding: 0 24px; border: 0; border-radius: 999px; background: linear-gradient(135deg,var(--cyan),var(--brand-blue-medium)); color: var(--neutral-white); cursor: pointer; font: 800 15px/1 "Be Vietnam Pro",Arial,sans-serif; }
.submit:disabled { cursor: wait; opacity: .65; }
.error { display: none; margin: 16px 0 0; color: var(--danger); font-weight: 700; }
.error.show { display: block; }
.response-frame { display: none; width: 100%; min-height: 430px; border: 0; border-radius: 18px; background: var(--neutral-white); }
html[data-theme="dark"] { color-scheme: dark; --navy:var(--brand-cyan-light); --ink:var(--neutral-dark-ink); --muted:var(--neutral-dark-muted); --paper:var(--neutral-dark-paper); --surface:var(--neutral-dark-surface); --line:var(--neutral-dark-line); }
html[data-theme="dark"] .contact-card { box-shadow: 0 18px 55px var(--alpha-black-25); }
@media screen and (max-width: 620px) {
  .contact-card { padding: 22px 18px; border-radius: 18px; }
  .grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .captcha-row { grid-template-columns: minmax(0,1fr) 112px 40px; }
  .captcha-row img { width: 112px; }
  .actions { align-items: stretch; flex-direction: column; }
  .submit { width: 100%; }
}