:root {
  --cyan: #22f7ff;
  --cyan-soft: rgba(34, 247, 255, 0.22);
  --pink: #ff2edf;
  --yellow: #ffd54b;
  --deep: #020b2f;
  --ink: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 22% 20%, rgba(31, 241, 255, 0.26), transparent 28%),
    radial-gradient(circle at 80% 80%, rgba(255, 46, 223, 0.2), transparent 30%),
    linear-gradient(180deg, #000514 0%, #031a52 48%, #010517 100%);
}

button,
input {
  font: inherit;
}

.page {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: max(14px, env(safe-area-inset-top)) 14px max(14px, env(safe-area-inset-bottom));
}

.poster {
  position: relative;
  width: min(100%, 430px);
  aspect-ratio: 385 / 578;
  overflow: hidden;
  border-radius: 0;
  background: url("./poster-template.png") center / cover no-repeat;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
}

.poster::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 35%;
  background: linear-gradient(180deg, transparent 0%, rgba(1, 6, 31, 0.38) 26%, rgba(1, 6, 31, 0.9) 100%);
  pointer-events: none;
}

.signup-panel,
.success-panel {
  position: absolute;
  z-index: 1;
  left: 50%;
  bottom: clamp(18px, 4.7%, 26px);
  width: min(75%, 294px);
  transform: translateX(-50%);
  border: 1px solid rgba(46, 247, 255, 0.62);
  background:
    linear-gradient(145deg, rgba(4, 21, 72, 0.94), rgba(2, 6, 35, 0.96)),
    rgba(3, 9, 42, 0.96);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.05) inset,
    0 0 22px rgba(32, 235, 255, 0.38),
    0 10px 30px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(8px);
}

.signup-panel {
  display: grid;
  gap: 7px;
  padding: 10px 12px 11px;
}

.panel-copy {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.kicker {
  margin: 0;
  color: var(--yellow);
  font-size: clamp(10px, 2.7vw, 12px);
  font-weight: 800;
  line-height: 1;
  text-shadow: 0 0 8px rgba(255, 213, 75, 0.55);
}

h1,
h2 {
  margin: 0;
  color: var(--cyan);
  line-height: 1;
  text-shadow: 0 0 10px rgba(34, 247, 255, 0.7);
}

h1 {
  font-size: clamp(20px, 6.3vw, 28px);
  font-weight: 900;
}

h2 {
  font-size: clamp(20px, 6vw, 26px);
}

.field {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 5px 8px;
  border: 1px solid rgba(34, 247, 255, 0.42);
  background: rgba(0, 15, 54, 0.82);
}

.field span {
  color: #c8fbff;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.field input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: #fff;
  background: transparent;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
}

.field input::placeholder {
  color: rgba(210, 251, 255, 0.55);
  font-weight: 500;
}

.field:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 16px var(--cyan-soft);
}

.submit-btn,
.secondary-btn {
  min-height: 36px;
  border: 0;
  color: #08215d;
  background: linear-gradient(90deg, #33fff5 0%, #ffe35a 100%);
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 0 16px rgba(34, 247, 255, 0.5);
}

.submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  font-size: 16px;
}

.btn-icon {
  width: 14px;
  height: 14px;
  clip-path: polygon(0 0, 100% 45%, 55% 54%, 100% 100%, 0 68%, 38% 50%);
  background: #08215d;
}

.form-message {
  min-height: 15px;
  margin: -2px 0 0;
  color: #ff9df0;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
}

.success-panel {
  padding: 18px 16px 16px;
  text-align: center;
}

.success-panel p {
  margin: 8px 0 0;
  color: #d9fdff;
  font-size: 13px;
  line-height: 1.5;
}

.secondary-btn {
  width: 100%;
  margin-top: 13px;
  font-size: 15px;
}

@media (max-width: 360px) {
  .signup-panel,
  .success-panel {
    width: 78%;
  }

  .signup-panel {
    gap: 6px;
    padding: 9px 10px 10px;
  }

  .field {
    min-height: 32px;
    grid-template-columns: 44px minmax(0, 1fr);
  }
}