:root {
  --login-bg-start: #0b0e14;
  --login-bg-end: #1b2233;
  --login-card-bg: rgba(23, 26, 33, 0.72);
  --login-card-border: rgba(255, 255, 255, 0.08);
  --login-text: #f4f5f7;
  --login-text-muted: #b7bec9;
  --login-input-bg: rgba(255, 255, 255, 0.04);
  --login-input-border: #2a2e38;
  --login-input-border-focus: #5b8def;
  --login-accent-start: #4a7bf0;
  --login-accent-end: #2a56c9;
  --login-error-bg: rgba(239, 68, 68, 0.12);
  --login-error-border: rgba(239, 68, 68, 0.35);
  --login-error-text: #ff9b9b;
  --radius-lg: 20px;
  --radius-md: 12px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  font-family: "Inter", "SF Pro Display", "Segoe UI", Roboto, system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top left, #202a42 0%, transparent 55%),
              linear-gradient(160deg, var(--login-bg-start), var(--login-bg-end));
  color: var(--login-text);
}

.login-shell {
  width: 100%;
  display: flex;
  justify-content: center;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--login-card-bg);
  border: 1px solid var(--login-card-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.25rem;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.65), 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}

.login-card__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.login-card__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--login-accent-start), var(--login-accent-end));
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
}

.login-card__name {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--login-text-muted);
}

.login-card__title {
  margin: 0 0 0.4rem;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.login-card__subtitle {
  margin: 0 0 1.75rem;
  color: var(--login-text-muted);
  font-size: 0.92rem;
  line-height: 1.4;
}

.login-alert {
  margin: 0 0 1.25rem;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-md);
  background: var(--login-error-bg);
  border: 1px solid var(--login-error-border);
  color: var(--login-error-text);
  font-size: 0.88rem;
  line-height: 1.4;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--login-text-muted);
}

.field input {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 0.98rem;
  font-family: inherit;
  color: var(--login-text);
  background: var(--login-input-bg);
  border: 1px solid var(--login-input-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.field input::placeholder {
  color: #6b7280;
}

.field input:hover {
  border-color: #3a3f4b;
}

.field input:focus {
  outline: none;
  border-color: var(--login-input-border-focus);
  box-shadow: 0 0 0 3px rgba(91, 141, 239, 0.22);
  background: rgba(255, 255, 255, 0.06);
}

.password-field {
  position: relative;
  display: flex;
}

.password-field input {
  padding-right: 3rem;
}

.password-toggle {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--login-text-muted);
  cursor: pointer;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: color 0.15s ease;
}

.password-toggle:hover,
.password-toggle:focus-visible {
  color: var(--login-text);
}

.password-toggle:focus-visible {
  outline: 2px solid var(--login-input-border-focus);
  outline-offset: -2px;
}

.icon {
  width: 20px;
  height: 20px;
}

.icon--eye-off {
  display: none;
}

.password-toggle[aria-pressed="true"] .icon--eye {
  display: none;
}

.password-toggle[aria-pressed="true"] .icon--eye-off {
  display: block;
}

.login-submit {
  position: relative;
  margin-top: 0.5rem;
  padding: 0.9rem 1rem;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  color: #fff;
  background: linear-gradient(135deg, var(--login-accent-start), var(--login-accent-end));
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  box-shadow: 0 10px 24px -8px rgba(42, 86, 201, 0.55);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.login-submit:hover {
  filter: brightness(1.08);
  box-shadow: 0 14px 30px -8px rgba(42, 86, 201, 0.65);
}

.login-submit:active {
  transform: translateY(1px);
}

.login-submit:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.login-submit__spinner {
  display: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  animation: login-spin 0.7s linear infinite;
}

.login-submit.is-loading {
  cursor: progress;
  filter: brightness(0.95);
}

.login-submit.is-loading .login-submit__spinner {
  display: inline-block;
}

.login-submit:disabled {
  cursor: progress;
  opacity: 0.9;
}

@keyframes login-spin {
  to {
    transform: rotate(360deg);
  }
}

.login-footnote {
  margin: 1.75rem 0 0;
  text-align: center;
  color: var(--login-text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.01em;
}

@media (max-width: 420px) {
  .login-card {
    padding: 2rem 1.5rem;
    border-radius: var(--radius-md);
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-submit,
  .field input,
  .password-toggle {
    transition: none;
  }

  .login-submit__spinner {
    animation-duration: 1.4s;
  }
}