*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

:root {
  --paper: #222b34;
  --ink: #111417;
  --shadow: rgba(10, 14, 18, 0.22);
  --glass: rgba(242, 246, 250, 0.18);
  --glass-border: rgba(224, 235, 245, 0.7);
}

body {
  font-family: "Fjalla One", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #0b0e10;
  color: var(--paper);
  overflow: hidden;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.bg::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 120vw;
  height: 100vh;
  left: -10vw;
  background-image: url("/assets/img/background/background_start.png");
  background-size: cover;
  background-position: left center;
  background-repeat: no-repeat;
  transform: translateX(0);
  animation: pan 3s linear forwards;
}

.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 40%, rgba(12, 16, 20, 0.16), transparent 62%),
    radial-gradient(circle at 50% 55%, rgba(0, 0, 0, 0.2), transparent 75%),
    linear-gradient(180deg, rgba(10, 14, 18, 0.2), rgba(10, 14, 18, 0.36));
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 20px 56px;
  position: relative;
  z-index: 1;
}

.panel {
  width: min(92vw, 480px);
  padding: 32px 26px 28px;
  border-radius: 22px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(30px) saturate(132%);
  box-shadow:
    0 24px 60px var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  display: grid;
  gap: 16px;
  text-align: center;
  opacity: 0;
  transform: translateY(16px);
  animation: panelIn 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.15s forwards;
}

.panel__title {
  margin: 0;
  font-size: 1.4rem;
  letter-spacing: 0.04em;
  color: #000000;
}

.panel__hint {
  margin: 0;
  font-size: 0.98rem;
  color: rgba(19, 23, 28, 0.75);
}

.form {
  display: grid;
  gap: 14px;
  margin-top: 4px;
}

.field {
  display: grid;
  gap: 8px;
  text-align: left;
}

.field__label {
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: #000000;
}

.field__input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid rgba(212, 199, 154, 0.35);
  background: rgba(245, 242, 232, 0.88);
  color: #1d1b14;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
}

.field__input:focus {
  border-color: rgba(212, 199, 154, 0.75);
  box-shadow: 0 0 0 1px rgba(212, 199, 154, 0.3);
}

.form__button {
  margin-top: 4px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(212, 199, 154, 0.7);
  background: #d4c79a;
  color: #2a261b;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  font-family: inherit;
  cursor: pointer;
}

.form__button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form__message {
  min-height: 1.2em;
  margin-top: 6px;
  font-size: 0.95rem;
  color: #2a261b;
}

.panel__link {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 199, 154, 0.5);
  padding-bottom: 2px;
  justify-self: center;
}

@keyframes pan {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(10vw);
  }
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 768px) {
  .panel {
    padding: 38px 34px 32px;
    width: min(80vw, 520px);
  }

  .panel__title {
    font-size: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bg::before {
    animation: none;
    transform: none;
  }

  .panel {
    animation: none;
    opacity: 1;
    transform: none;
  }
}