* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: #03040A;
  font-family: 'Iceberg', sans-serif;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.rain { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.rl {
  position: absolute; width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(160,155,165,0.1), transparent);
  animation: rfall linear infinite;
}
@keyframes rfall { from { transform: translateY(-160px); } to { transform: translateY(110vh); } }

nav {
  position: relative; z-index: 10;
  padding: 18px 32px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  flex-shrink: 0;
  display: flex; align-items: center;
}
.nav-brand { font-size: 12px; letter-spacing: 3px; text-decoration: none; }
.nb-main {
  color: #C03858;
  text-shadow: 0 0 4px rgba(192,56,88,0.9), 0 0 10px rgba(180,40,70,0.5), 0 0 20px rgba(160,30,55,0.25);
  animation: sign-flicker 7.3s ease-in-out 2.1s infinite;
}
.nb-cc {
  color: #B8A8B2;
  text-shadow: 0 0 3px rgba(184,168,178,0.7), 0 0 8px rgba(160,145,155,0.3);
  animation: flicker-cc 11.6s ease-in-out 4.8s infinite;
}
@keyframes sign-flicker {
  0%,72%,74%,76%,100% { opacity: 1; }
  73% { opacity: 0.04; } 75% { opacity: 0.6; }
}
@keyframes flicker-cc {
  0%,85%,87%,89%,100% { opacity: 1; }
  86% { opacity: 0.06; } 88% { opacity: 0.72; }
}

.page {
  flex: 1; position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center;
}

.form-box {
  width: 360px;
  border: 2px solid rgba(140,120,125,0.18);
  background: rgba(2,3,8,0.92);
  position: relative;
  padding: 36px;
  display: flex; flex-direction: column; gap: 28px;
}
.form-box::before {
  content: '';
  position: absolute; inset: 6px;
  border: 1px solid rgba(120,110,115,0.08);
  pointer-events: none;
}

.form-title {
  font-size: 20px;
  color: rgba(192,56,88,0.7);
  text-shadow: 0 0 4px rgba(192,56,88,0.5), 0 0 14px rgba(160,30,55,0.25);
  letter-spacing: 6px;
}

.form-error {
  font-size: 11px;
  color: rgba(192,56,88,0.75);
  letter-spacing: 2px;
  margin-top: -14px;
}

.form-fields {
  display: flex; flex-direction: column; gap: 14px;
}
.form-field {
  display: block; width: 100%;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  color: rgba(205,200,210,0.7);
  font-family: 'Iceberg', sans-serif;
  font-size: 13px;
  padding: 13px 16px;
  letter-spacing: 2px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}
.form-field::placeholder { color: rgba(110,105,115,0.32); }
.form-field:focus {
  border-color: rgba(192,56,88,0.25);
  background: rgba(192,56,88,0.02);
}

.invite-sep {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(140,120,125,0.18), transparent);
  margin: 4px 0;
}
.form-field.invite {
  border-color: rgba(192,56,88,0.12);
  color: rgba(192,56,88,0.6);
  letter-spacing: 4px;
}
.form-field.invite::placeholder { color: rgba(192,56,88,0.2); }
.form-field.invite:focus {
  border-color: rgba(192,56,88,0.3);
  background: rgba(192,56,88,0.03);
  color: rgba(192,56,88,0.85);
}

.form-footer {
  display: flex; align-items: center; justify-content: space-between;
}
.form-submit {
  background: transparent;
  border: 1px solid rgba(192,56,88,0.2);
  color: rgba(192,56,88,0.55);
  font-family: 'Iceberg', sans-serif;
  font-size: 11px;
  padding: 11px 26px;
  letter-spacing: 4px;
  cursor: pointer;
  transition: all 0.2s;
}
.form-submit:hover {
  border-color: rgba(192,56,88,0.45);
  color: rgba(192,56,88,0.9);
}
.form-link {
  font-size: 13px;
  color: #B8A8B2;
  text-shadow: 0 0 3px rgba(184,168,178,0.7), 0 0 8px rgba(160,145,155,0.35);
  letter-spacing: 1.5px;
  text-decoration: none; transition: color 0.2s;
}
.form-link:hover { color: rgba(210,200,210,0.9); }

/* ── MOBILE ─────────────────────────────────────── */
@media (max-width: 767.98px) {
  .form-box { width: calc(100% - 32px); max-width: 360px; padding: 28px 24px; }
  nav { padding: 14px 16px; }
  .form-field { font-size: 16px; padding: 14px 16px; }
  .form-submit { padding: 13px 22px; font-size: 12px; min-height: 44px; }
  .form-footer { flex-direction: column; gap: 14px; align-items: center; }
}

@media (max-width: 480px) {
  .form-box { width: calc(100% - 20px); padding: 24px 18px; }
  .form-title { font-size: 17px; letter-spacing: 4px; }
}