:root {
  --navy: #03182d;
  --navy-dark: #010a13;
  --silver: #cbd5e1;
  --silver-light: #ffffff;
  --white: #f8fbff;
  --muted: #afbfce;
  --line: rgba(255,255,255,.18);
  --header: 78px;
}

* { box-sizing: border-box; }
html { background: var(--navy-dark); }
body {
  margin: 0;
  min-width: 320px;
  color: var(--white);
  background: var(--navy-dark);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select { font: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; }
button, a { -webkit-tap-highlight-color: transparent; }

/* Minimal one-screen home */
.minimal-hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  isolation: isolate;
  display: grid;
  place-items: center;
  background: #7f9db4;
}
.cloud-background {
  position: absolute;
  z-index: -3;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  animation: cloud-breathe 18s ease-out both;
}
.cloud-wash {
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    radial-gradient(circle at 50% 42%,rgba(255,255,255,.04),rgba(3,24,45,.2) 70%),
    linear-gradient(180deg,rgba(1,10,19,.12),rgba(1,10,19,.28));
}
.hero-brand {
  width: 100%;
  min-height: 100svh;
  padding: clamp(2rem,7vh,5.5rem) 1.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.hero-logo {
  width: min(78vw,720px);
  height: auto;
  filter: drop-shadow(0 14px 30px rgba(0,0,0,.35));
}
.coming-soon {
  margin: clamp(.65rem,2vh,1.2rem) 0 0;
  color: #fff;
  font-size: clamp(.78rem,1.15vw,1rem);
  font-weight: 850;
  letter-spacing: .34em;
  line-height: 1.4;
  text-indent: .34em;
  text-transform: uppercase;
  text-shadow: 0 2px 12px rgba(0,0,0,.65);
}
.register-button {
  min-width: 154px;
  min-height: 48px;
  margin-top: clamp(1.25rem,3vh,2rem);
  padding: .82rem 1.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,.82);
  border-radius: 2px;
  color: #fff;
  background: rgba(1,10,19,.3);
  box-shadow: 0 12px 34px rgba(0,0,0,.2);
  backdrop-filter: blur(7px);
  font-size: .82rem;
  font-weight: 850;
  letter-spacing: .15em;
  text-indent: .15em;
  text-transform: uppercase;
  transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease;
}
.register-button:hover,
.register-button:focus-visible {
  transform: translateY(-2px);
  border-color: var(--silver-light);
  color: #161004;
  background: linear-gradient(135deg,var(--silver-light),var(--silver));
  outline: none;
}
@keyframes cloud-breathe { from { transform: scale(1.03); } to { transform: scale(1.075); } }

/* Registration */
.topbar {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--header);
  padding: 0 clamp(1rem,4vw,4.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(1,10,19,.96);
  backdrop-filter: blur(8px);
}
.a3-top-logo { display: flex; align-items: center; width: 207px; max-width: 42vw; }
.a3-top-logo img { width: 100%; height: auto; filter: drop-shadow(0 4px 12px rgba(0,0,0,.38)); }
.topbar nav { display: flex; align-items: center; gap: clamp(1.2rem,2.6vw,2.8rem); }
.topbar nav a, .topbar nav button { border: 0; padding: .6rem 0; color: #fff; background: transparent; font-size: .86rem; font-weight: 750; cursor: pointer; }
.topbar nav .active { color: var(--silver-light); border-bottom: 2px solid var(--silver); }
.topbar nav .topbar-cta { padding: .6rem 1.1rem; border: 1px solid rgba(203,213,225,.75); border-radius: 3px; color: #111; background: linear-gradient(135deg,#fff,#aeb7c4); }
.menu-button { display: none; width: 44px; height: 44px; border: 0; background: transparent; place-content: center; gap: 5px; }
.menu-button i { display: block; width: 24px; height: 2px; background: #fff; }
.mobile-menu { position: fixed; z-index: 99; top: var(--header); left: 0; right: 0; padding: 1rem; background: rgba(1,10,19,.98); border-bottom: 1px solid var(--line); }
.mobile-menu a, .mobile-menu button { display: block; width: 100%; border: 0; padding: .9rem; color: #fff; background: transparent; text-align: center; }
.register-page { min-height: 100svh; background: linear-gradient(135deg,#010a13 0%,#062744 100%); }
.register-shell { min-height: 100svh; padding: calc(var(--header) + 3rem) 1.5rem 3rem; display: grid; grid-template-columns: minmax(340px,.85fr) minmax(500px,1.15fr); gap: clamp(2rem,6vw,7rem); align-items: center; width: min(1250px,100%); margin: 0 auto; }
.register-brand { text-align: center; }
.register-brand img { width: min(100%,620px); height: auto; margin: 0 auto; filter: drop-shadow(0 20px 45px rgba(0,0,0,.4)); }
.register-brand p { margin: .25rem 0 .4rem; color: var(--silver-light); font-size: .78rem; font-weight: 900; letter-spacing: .18em; }
.register-brand h1 { margin: 0; font-family: Georgia,"Times New Roman",serif; font-size: clamp(2.8rem,5vw,5rem); font-weight: 400; line-height: 1; }
.register-card { padding: clamp(1.5rem,4vw,3rem); border: 1px solid rgba(255,255,255,.14); border-radius: 14px; background: rgba(255,255,255,.06); box-shadow: 0 30px 100px rgba(0,0,0,.3); backdrop-filter: blur(10px); }
#registrationForm { display: grid; gap: 1rem; }
#registrationForm label { display: grid; gap: .45rem; }
#registrationForm label > span { color: #d7e1e9; font-size: .8rem; font-weight: 800; letter-spacing: .05em; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
input, select { width: 100%; min-height: 52px; border: 1px solid rgba(255,255,255,.2); border-radius: 5px; padding: .75rem .9rem; color: #fff; background: rgba(1,10,19,.7); outline: none; }
input:focus, select:focus { border-color: var(--silver); box-shadow: 0 0 0 3px rgba(203,213,225,.15); }
.check-row { grid-template-columns: auto 1fr; align-items: start; }
.check-row input { width: 19px; min-height: 19px; accent-color: var(--silver); }
.preview-note { margin: 0; padding: .8rem 1rem; border-left: 3px solid var(--silver); color: var(--muted); background: rgba(203,213,225,.08); font-size: .8rem; line-height: 1.5; }
.submit-button { min-height: 54px; border: 0; border-radius: 4px; color: #161004; background: linear-gradient(135deg,var(--silver-light),var(--silver)); font-weight: 900; cursor: pointer; }
.register-success { text-align: center; }
.success-icon { width: 70px; height: 70px; margin: 0 auto 1.5rem; display: grid; place-items: center; border: 1px solid var(--silver); border-radius: 50%; color: var(--silver); font-size: 2rem; }
.register-success p { color: var(--silver-light); font-size: .75rem; font-weight: 900; letter-spacing: .18em; }
.register-success h2 { font-family: Georgia,"Times New Roman",serif; font-size: 3rem; font-weight: 400; }
.register-success strong, .register-success > span { display: block; margin-bottom: .8rem; }
.hero-button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; margin-top: 1rem; padding: .82rem 1.4rem; border: 1px solid var(--silver); border-radius: 3px; color: #161004; background: linear-gradient(135deg,var(--silver-light),var(--silver)); font-weight: 850; }

/* Dedicated registration confirmation */
.confirmation-page { min-height: 100svh; overflow: hidden; background: radial-gradient(circle at 50% 25%,#0d436e 0%,#03182d 45%,#010a13 100%); }
.confirmation-shell { min-height: 100svh; display: grid; place-items: center; padding: 1.25rem; }
.flight-stage { position: relative; width: min(92vw,760px); min-height: min(88svh,720px); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.confirmation-logo { position: absolute; top: 0; width: min(54vw,330px); height: auto; filter: drop-shadow(0 12px 26px rgba(0,0,0,.35)); }
.plane-orbit { position: relative; width: clamp(190px,32vw,280px); aspect-ratio: 1; display: grid; place-items: center; }
.orbit-ring { position: absolute; inset: 8%; border: 1px solid rgba(203,213,225,.25); border-radius: 50%; box-shadow: 0 0 45px rgba(203,213,225,.12),inset 0 0 40px rgba(255,255,255,.05); }
.silver-plane { width: 44%; color: var(--silver); filter: drop-shadow(0 10px 12px rgba(0,0,0,.38)); animation: plane-drama 3s cubic-bezier(.45,.05,.2,1) forwards; }
.silver-plane path { fill: #dce5ed; stroke: #fff; stroke-width: 1.5; }
.flight-status { margin: 1.1rem 0 .75rem; color: #d7e1e9; font-size: .78rem; font-weight: 850; letter-spacing: .18em; text-transform: uppercase; }
.flight-progress { width: min(76vw,360px); height: 3px; overflow: hidden; background: rgba(255,255,255,.13); }
.flight-progress span { display: block; width: 100%; height: 100%; transform: scaleX(0); transform-origin: left; background: linear-gradient(90deg,#7d8794,#fff); animation: confirmation-progress 3s linear forwards; }
.confirmation-result { position: absolute; inset: 50% auto auto 50%; width: min(92vw,650px); padding: clamp(1.5rem,5vw,3rem); transform: translate(-50%,-44%) scale(.96); opacity: 0; visibility: hidden; border: 1px solid rgba(255,255,255,.16); border-radius: 18px; background: rgba(1,10,19,.92); box-shadow: 0 30px 100px rgba(0,0,0,.42); backdrop-filter: blur(16px); transition: opacity .55s ease,transform .55s ease,visibility .55s; }
.confirmation-result p { margin: 0 0 .8rem; color: var(--silver); font-size: .75rem; font-weight: 900; letter-spacing: .18em; }
.confirmation-result h1 { margin: 0 0 1.3rem; font-family: Georgia,"Times New Roman",serif; font-size: clamp(2.3rem,6vw,4.5rem); font-weight: 400; line-height: 1.05; }
.confirmation-result strong { display: block; color: #fff; font-size: clamp(1.35rem,4vw,2rem); letter-spacing: .16em; }
.confirmation-result > span { display: block; margin-top: .55rem; color: var(--muted); }
.confirmation-ready .plane-orbit,.confirmation-ready .flight-status,.confirmation-ready .flight-progress { opacity: 0; visibility: hidden; transition: opacity .35s,visibility .35s; }
.confirmation-ready .confirmation-result { opacity: 1; visibility: visible; transform: translate(-50%,-50%) scale(1); }
@keyframes plane-drama {
  0% { transform: rotate(-30deg) scale(.55); opacity: 0; }
  18% { opacity: 1; }
  68% { transform: rotate(690deg) scale(1.05); }
  84% { transform: rotate(700deg) scale(.96); }
  100% { transform: rotate(690deg) scale(1); opacity: 1; }
}
@keyframes confirmation-progress { to { transform: scaleX(1); } }
.toast { position: fixed; z-index: 500; left: 50%; bottom: 1.4rem; width: min(92%,520px); padding: 1rem 1.2rem; transform: translate(-50%,150%); border: 1px solid rgba(203,213,225,.5); border-radius: 8px; background: rgba(1,10,19,.96); text-align: center; transition: transform .3s; }
.toast.is-visible { transform: translate(-50%,0); }
.offline-page { min-height: 100svh; display: grid; place-items: center; padding: 1.5rem; text-align: center; background: radial-gradient(circle at 50% 15%,#0d436e,var(--navy-dark) 65%); }
.offline-page main { padding: 3rem; border: 1px solid var(--line); }
.offline-page p { color: var(--silver-light); letter-spacing: .15em; }
.offline-page h1 { font-family: Georgia,"Times New Roman",serif; font-size: clamp(3rem,8vw,6rem); font-weight: 400; }

@media (max-width: 820px) {
  :root { --header: 70px; }
  .hero-logo { width: min(92vw,620px); }
  .topbar nav { display: none; }
  .menu-button { display: grid; }
  .register-shell { grid-template-columns: 1fr; padding-top: calc(var(--header) + 2rem); }
  .register-brand img { width: min(92%,520px); }
  .register-brand h1 { font-size: 3rem; }
}

@media (max-width: 520px) {
  .a3-top-logo { width: 170px; max-width: 58vw; }
  .hero-brand { padding-inline: 1rem; }
  .coming-soon { font-size: .72rem; }
  .field-row { grid-template-columns: 1fr; }
  .register-shell { padding-inline: 1rem; }
  .register-card { padding: 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}