:root {
  --sn-auth-bg-1: #0b1630;
  --sn-auth-bg-2: #13294a;
  --sn-auth-bg-3: #1e3f68;
  --sn-auth-card: rgba(6, 15, 31, 0.9);
  --sn-auth-card-border: rgba(255, 255, 255, 0.08);
  --sn-auth-text: #f5f9ff;
  --sn-auth-muted: #b8c6d9;
  --sn-auth-accent: #7dd3fc;
  --sn-auth-button-1: #78a8ff;
  --sn-auth-button-2: #3b6cff;
  --sn-auth-input-bg: rgba(7, 13, 24, 0.84);
  --sn-auth-input-border: rgba(255, 255, 255, 0.14);
  --sn-auth-input-focus: rgba(125, 211, 252, 0.5);
  --sn-auth-error-bg: rgba(127, 29, 29, 0.18);
  --sn-auth-error-border: rgba(248, 113, 113, 0.35);
  --sn-auth-error-text: #fecaca;
  --sn-auth-success-bg: rgba(22, 101, 52, 0.18);
  --sn-auth-success-border: rgba(74, 222, 128, 0.28);
  --sn-auth-success-text: #dcfce7;
  --sn-auth-shadow: 0 24px 72px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

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

body.sn-app-auth-body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--sn-auth-text);
  background:
    radial-gradient(circle at top left, rgba(125, 211, 252, 0.16), transparent 28%),
    radial-gradient(circle at bottom right, rgba(96, 165, 250, 0.14), transparent 30%),
    linear-gradient(135deg, var(--sn-auth-bg-1) 0%, var(--sn-auth-bg-2) 48%, var(--sn-auth-bg-3) 100%);
}

.sn-app-auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 18px;
}

.sn-app-auth__card {
  width: 100%;
  max-width: 500px;
  padding: 34px 32px 30px;
  border: 1px solid var(--sn-auth-card-border);
  border-radius: 24px;
  background: var(--sn-auth-card);
  box-shadow: var(--sn-auth-shadow);
  backdrop-filter: blur(10px);
}

.sn-app-auth__card--register {
  max-width: 620px;
}

.sn-app-auth__logo-row {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--sn-auth-text);
  margin-bottom: 24px;
}

.sn-app-auth__logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.sn-app-auth__logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sn-app-auth__logo-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.sn-app-auth__logo-sub {
  font-size: 0.83rem;
  color: var(--sn-auth-muted);
}

.sn-app-auth__title {
  margin: 0 0 10px;
  font-size: clamp(2rem, 3vw, 2.5rem);
  line-height: 1.08;
  font-weight: 700;
}

.sn-app-auth__subtitle {
  margin: 0 0 24px;
  color: var(--sn-auth-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.sn-app-auth__message {
  margin-bottom: 18px;
  padding: 13px 15px;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.6;
}

.sn-app-auth__message--error {
  background: var(--sn-auth-error-bg);
  border: 1px solid var(--sn-auth-error-border);
  color: var(--sn-auth-error-text);
}

.sn-app-auth__message--success {
  background: var(--sn-auth-success-bg);
  border: 1px solid var(--sn-auth-success-border);
  color: var(--sn-auth-success-text);
}

.sn-app-auth__field,
.sn-app-auth__field-row {
  margin-bottom: 18px;
}

.sn-app-auth__field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.sn-app-auth__label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--sn-auth-text);
}

.sn-app-auth__input {
  width: 100%;
  height: 58px;
  padding: 0 18px;
  border-radius: 16px;
  border: 1px solid var(--sn-auth-input-border);
  background: var(--sn-auth-input-bg);
  color: var(--sn-auth-text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.sn-app-auth__input::placeholder {
  color: rgba(184, 198, 217, 0.62);
}

.sn-app-auth__input:focus {
  border-color: var(--sn-auth-input-focus);
  box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.12);
}

.sn-app-auth__checkbox {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 4px 0 22px;
  color: var(--sn-auth-muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.sn-app-auth__checkbox input {
  margin-top: 4px;
}

.sn-app-auth__checkbox a,
.sn-app-auth__links a,
.sn-app-auth__back-link {
  color: var(--sn-auth-accent);
  text-decoration: none;
}

.sn-app-auth__checkbox a:hover,
.sn-app-auth__links a:hover,
.sn-app-auth__back-link:hover {
  text-decoration: underline;
}

.sn-app-auth__button {
  width: 100%;
  min-height: 58px;
  border: 0;
  border-radius: 18px;
  padding: 15px 22px;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  background: linear-gradient(90deg, var(--sn-auth-button-1) 0%, var(--sn-auth-button-2) 100%);
  box-shadow: 0 18px 36px rgba(43, 95, 255, 0.24);
}

.sn-app-auth__button:hover {
  filter: brightness(1.04);
}

.sn-app-auth__links {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 22px;
  font-size: 0.95rem;
}

.sn-app-auth__footer {
  margin: 20px 0 0;
  color: rgba(184, 198, 217, 0.82);
  font-size: 0.9rem;
  line-height: 1.6;
}

.sn-app-auth__back-link {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.95rem;
}

.sn-app-auth__honeypot {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  pointer-events: none;
  height: 0;
  overflow: hidden;
}

@media (max-width: 640px) {
  .sn-app-auth {
    padding: 24px 14px;
  }

  .sn-app-auth__card,
  .sn-app-auth__card--register {
    max-width: none;
    padding: 26px 20px 24px;
    border-radius: 20px;
  }

  .sn-app-auth__field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .sn-app-auth__links {
    flex-direction: column;
    gap: 12px;
  }
}