:root {
  --bg-main: #0c1016;
  --bg-card: #131a24;
  --bg-input: #1a2431;
  --line: #2a374a;
  --text-main: #ecf1f8;
  --text-soft: #9eacc4;
  --accent: #4f8dff;
  --accent-soft: #5f72ff;
  --danger: #ff6b6b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Outfit", sans-serif;
  min-height: 100vh;
  color: var(--text-main);
  background:
    radial-gradient(circle at 15% 20%, rgba(79, 141, 255, 0.26), transparent 35%),
    radial-gradient(circle at 85% 15%, rgba(95, 114, 255, 0.22), transparent 30%),
    radial-gradient(circle at 50% 100%, rgba(36, 55, 87, 0.35), transparent 45%),
    var(--bg-main);
  position: relative;
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.brand-chip {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid #3b4f66;
  background: #1a2736;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: #cfe0f4;
}

.brand-word {
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #f4f8ff;
  text-shadow: 0 0 16px rgba(79, 141, 255, 0.42);
  margin-bottom: 6px;
}

.card {
  width: min(100%, 380px);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(19, 26, 36, 0.92), rgba(19, 26, 36, 0.85));
  backdrop-filter: blur(3px);
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.28);
}

.card-header h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
}

.card-header {
  text-align: center;
}

.card-header p {
  margin: 10px 0 20px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.auth-form {
  display: grid;
  gap: 14px;
}

.form-field {
  display: grid;
  gap: 7px;
}

.form-field label {
  font-size: 0.95rem;
  color: #d8e1ef;
}

.form-field input {
  width: 100%;
  border: 1px solid #33445b;
  border-radius: 10px;
  background: var(--bg-input);
  color: var(--text-main);
  padding: 12px 13px;
  font-size: 0.98rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 141, 255, 0.26);
}

.field-error {
  min-height: 1rem;
  font-size: 0.8rem;
  color: var(--danger);
}

.btn-primary {
  width: 100%;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(120deg, var(--accent), var(--accent-soft));
  color: #04110f;
  font-weight: 700;
  font-size: 0.97rem;
  padding: 12px 14px;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

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

.form-message {
  margin: 4px 0 0;
  min-height: 1.1rem;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.form-message.success {
  color: #83f7bd;
}

.form-message.error {
  color: var(--danger);
}

@media (max-width: 640px) {
  body {
    overflow: auto;
  }
  .auth-page {
    align-items: flex-start;
    padding: 16px;
    padding-top: 40px;
  }
  .card {
    padding: 24px;
    border-radius: 12px;
  }
  .form-field input,
  .btn-primary {
    font-size: 16px;
  }
}