:root {
    --lt-navy: #122e48;
    --lt-navy-deep: #0b2238;
    --lt-cyan: #00b2e3;
    --lt-cyan-soft: #e6f8fc;
    --lt-paper: #f3f6f8;
    --lt-ink: #183044;
    --lt-muted: #607283;
    --lt-line: #d9e2e8;
    --lt-danger: #b42318;
}

.registration-page {
    min-height: calc(100vh - 75px);
    padding: clamp(1.25rem, 4vw, 4rem);
    background: linear-gradient(90deg, rgba(18, 46, 72, .035) 1px, transparent 1px) 0 0 / 36px 36px, var(--lt-paper);
    box-sizing: border-box;
}

.registration-shell {
    width: min(1180px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(300px, .82fr) minmax(520px, 1.18fr);
    overflow: hidden;
    border: 1px solid var(--lt-line);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 24px 70px rgba(12, 37, 59, .12);
}

.registration-intro {
    position: relative;
    padding: clamp(2rem, 5vw, 4.5rem);
    color: #fff;
    background: var(--lt-navy);
    isolation: isolate;
}

.registration-intro::after {
    content: '';
    position: absolute;
    inset: auto -25% -8rem auto;
    width: 22rem;
    aspect-ratio: 1;
    border: 1px solid rgba(0, 178, 227, .34);
    border-radius: 50%;
    box-shadow: 0 0 0 3rem rgba(0, 178, 227, .06), 0 0 0 6rem rgba(0, 178, 227, .035);
    z-index: -1;
}

.registration-brand {
    display: inline-flex;
    padding: .55rem .7rem;
    margin-bottom: clamp(2rem, 5vw, 4rem);
    border-radius: 8px;
    background: #fff;
}
.registration-brand img { width: 154px; height: auto; display: block; }

.registration-eyebrow,
.registration-form-heading span {
    margin: 0 0 .65rem;
    color: var(--lt-cyan);
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.registration-intro h1 {
    max-width: 12ch;
    margin: 0;
    font-family: 'Gotham', sans-serif;
    font-size: clamp(2rem, 4.5vw, 3.7rem);
    line-height: 1.02;
    letter-spacing: -.04em;
}

.registration-lead { max-width: 46ch; margin: 1.35rem 0 0; color: #dce8f0; font-size: 1.05rem; line-height: 1.65; }
.registration-window { display: grid; grid-template-columns: 1fr 2.5rem 1fr; align-items: center; gap: .85rem; margin: 2rem 0 1.25rem; padding: 1rem 0; border-block: 1px solid rgba(255, 255, 255, .2); }
.registration-window div { display: grid; gap: .2rem; }
.registration-window span { color: #a9c0d1; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.registration-window strong { color: #fff; font-family: 'Gotham', sans-serif; font-size: 1rem; }
.registration-window__line { height: 2px; background: var(--lt-cyan); }
.registration-note { color: #b9cad6; font-size: .9rem; line-height: 1.5; }

.registration-form-panel { padding: clamp(2rem, 5vw, 4.5rem); }
.registration-form-heading { margin-bottom: 1.75rem; }
.registration-form-heading h2 { margin: 0; color: var(--lt-navy); font: 700 clamp(1.45rem, 2.5vw, 2rem)/1.15 'Gotham', sans-serif; }
.registration-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.15rem 1.25rem; }
.form-field { min-width: 0; }
.form-field--timezone,
.form-field--captcha,
.form-alert,
.registration-submit-row { grid-column: 1 / -1; }
.form-field label { display: block; margin-bottom: .4rem; color: var(--lt-ink); font-weight: 700; font-size: .9rem; }
.form-field label span { color: var(--lt-cyan); }
.form-field input,
.form-field select { width: 100%; min-height: 46px; padding: .7rem .8rem; border: 1px solid #c7d3dc; border-radius: 7px; background: #fff; color: var(--lt-ink); font: inherit; box-sizing: border-box; transition: border-color .18s ease, box-shadow .18s ease; }
.form-field select { cursor: pointer; }
.form-field input:focus,
.form-field select:focus { outline: none; border-color: var(--lt-cyan); box-shadow: 0 0 0 3px rgba(0, 178, 227, .16); }
.form-field--error input,
.form-field--error select { border-color: var(--lt-danger); }
.field-errors ul,
.form-alert ul { margin: .45rem 0 0; padding-left: 1.1rem; }
.field-errors { color: var(--lt-danger); font-size: .84rem; }
.field-help { display: block; margin-top: .4rem; color: var(--lt-muted); line-height: 1.4; }
.field-help ul { margin: .35rem 0 0; padding-left: 1.1rem; }
.form-alert { padding: .8rem 1rem; border-left: 3px solid var(--lt-danger); background: #fff1f0; color: var(--lt-danger); }

.password-control { position: relative; }
.password-control input { padding-right: 3rem; }
.password-control .password-toggle { position: absolute; top: 50%; right: .45rem; width: 36px; height: 36px; display: grid; place-items: center; transform: translateY(-50%); border: 0; border-radius: 6px; background: var(--lt-cyan-soft); color: var(--lt-navy); cursor: pointer; }
.password-toggle svg { width: 17px; fill: currentColor; }
.registration-form .captcha-caja { margin: 0 0 .5rem; }
.registration-form .captcha-recargar { min-width: 44px; min-height: 44px; color: var(--lt-navy); }

.registration-submit-row { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; margin-top: .75rem; padding-top: 1.4rem; border-top: 1px solid var(--lt-line); }
.registration-submit-row p { max-width: 35ch; margin: 0; color: var(--lt-muted); font-size: .9rem; line-height: 1.45; }
.registration-submit-row button,
.registration-secondary-action { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .75rem 1.25rem; border: 1px solid var(--lt-navy); border-radius: 7px; background: var(--lt-navy); color: #fff; font: 700 .95rem 'Source Sans Pro', sans-serif; text-decoration: none; cursor: pointer; transition: background .18s ease, border-color .18s ease, transform .18s ease; }
.registration-submit-row button:hover,
.registration-secondary-action:hover { background: #184567; border-color: #184567; transform: translateY(-1px); }
.registration-secondary-action { margin-top: 1.5rem; background: #fff; color: var(--lt-navy); }
.registration-shell--closed { grid-template-columns: minmax(0, 660px); justify-content: center; background: var(--lt-navy); }
.registration-shell--closed .registration-intro { min-height: min(620px, calc(100vh - 10rem)); display: flex; flex-direction: column; justify-content: center; }
.registration-shell--closed .registration-brand { align-self: flex-start; }

@media (max-width: 900px) {
    .registration-shell { grid-template-columns: 1fr; }
    .registration-intro h1 { max-width: 16ch; }
    .registration-brand { margin-bottom: 2rem; }
}

@media (max-width: 600px) {
    .registration-page { padding: 0; }
    .registration-shell { border: 0; border-radius: 0; box-shadow: none; }
    .registration-intro,
    .registration-form-panel { padding: 1.5rem; }
    .registration-form { grid-template-columns: 1fr; }
    .form-field,
    .form-field--timezone,
    .form-field--captcha,
    .registration-submit-row { grid-column: 1; }
    .registration-window { grid-template-columns: 1fr 1.25rem 1fr; }
    .registration-submit-row { align-items: stretch; flex-direction: column; }
    .registration-submit-row button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .registration-submit-row button,
    .registration-secondary-action,
    .form-field input,
    .form-field select { transition: none; }
}