:root {
  --bg: #9ed0ff;
  --pattern: rgba(71, 151, 234, 0.35);
  --card-top: rgba(241, 247, 252, 0.96);
  --card-bottom: rgba(231, 239, 245, 0.94);
  --card-border: rgba(255, 255, 255, 0.9);
  --text: #1f1f1f;
  --muted: #7d8790;
  --line: rgba(117, 134, 150, 0.22);
  --primary: #0d8bff;
  --primary-strong: #0b77db;
  --primary-soft: rgba(13, 139, 255, 0.12);
  --danger-soft: rgba(255, 73, 73, 0.12);
  --danger: #ff4545;
  --success-soft: rgba(50, 184, 110, 0.12);
  --success: #23905c;
  --shadow: 0 30px 80px rgba(38, 86, 135, 0.16);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image: url("/static/bg-pattern-final.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 580px);
  min-height: 710px;
  padding: 28px 42px 34px;
  position: relative;
  border-radius: 32px;
  border: 1px solid var(--card-border);
  background: linear-gradient(180deg, var(--card-top), var(--card-bottom));
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  backdrop-filter: blur(10px);
}

.help-button {
  position: absolute;
  top: 22px;
  right: 24px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid #222;
  background: transparent;
  color: #222;
  font-size: 16px;
  font-weight: 700;
  cursor: default;
}

.brand-mark {
  margin-top: 48px;
  margin-bottom: 28px;
}

.brand-mark__image {
  display: block;
  width: min(220px, 52vw);
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 16px 32px rgba(13, 139, 255, 0.12));
}

h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1.08;
  font-weight: 700;
}

.subtitle {
  max-width: 360px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.45;
}

.alerts {
  width: 100%;
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.alert {
  width: 100%;
  border-radius: 18px;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.35;
  text-align: center;
}

.alert--success {
  color: var(--success);
  background: var(--success-soft);
}

.alert--error {
  color: var(--danger);
  background: var(--danger-soft);
}

.alert--info {
  color: var(--primary-strong);
  background: var(--primary-soft);
}

.stage-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 26px 0 8px;
}

.stage-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(13, 139, 255, 0.18);
}

.stage-dot.is-active {
  width: 28px;
  background: var(--primary);
}

.stage-dot.is-done {
  background: rgba(13, 139, 255, 0.52);
}

.form,
.reset-form {
  width: min(100%, 360px);
}

.form {
  margin-top: 18px;
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 9px;
  text-align: left;
}

.field span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.field input {
  width: 100%;
  height: 56px;
  padding: 0 18px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font-size: 18px;
  outline: none;
}

.field__input--code {
  text-align: center;
  letter-spacing: 0.18em;
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.field input:focus {
  border-color: rgba(13, 139, 255, 0.5);
  box-shadow: 0 0 0 4px rgba(13, 139, 255, 0.11);
}

.hint {
  margin: -2px 2px 2px;
  text-align: left;
  color: var(--muted);
  font-size: 13px;
}

.button {
  width: 100%;
  height: 54px;
  border: 0;
  border-radius: 16px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.button--primary {
  margin-top: 6px;
  color: #fff;
  background: linear-gradient(180deg, #26a1ff 0%, var(--primary) 100%);
}

.button--primary:hover {
  transform: translateY(-1px);
  background: linear-gradient(180deg, #1d9bfd 0%, var(--primary-strong) 100%);
}

.button--secondary {
  margin-top: 12px;
  color: var(--primary-strong);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(13, 139, 255, 0.14);
}

.button--secondary:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.9);
}

@media (max-width: 640px) {
  .screen {
    padding: 14px;
  }

  .login-card {
    min-height: 100vh;
    width: 100%;
    border-radius: 26px;
    padding: 22px 20px 28px;
  }

  .brand-mark {
    margin-top: 54px;
  }

  h1 {
    font-size: 28px;
  }

  .subtitle {
    font-size: 15px;
  }

  .field input {
    font-size: 16px;
  }
}