/* Purity-styled standalone authentication pages (login, future auth screens). */

:root {
  --page-bg: #f8f9fa;
  --card-bg: #ffffff;
  --ink: #2d3748;
  --muted: #a0aec0;
  --line: #e2e8f0;
  --brand-300: #4fd1c5;
  --brand-400: #38b2ac;
  --brand-500: #319795;
  --danger: #e53e3e;
  --radius-card: 15px;
  --radius-control: 12px;
  --gradient-dark: linear-gradient(81.62deg, #313860 2.25%, #151928 79.87%);
  --gradient-brand: linear-gradient(81.62deg, #4fd1c5 2.25%, #38b2ac 79.87%);
  --font-stack: "Inter", "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--gradient-dark);
  color: var(--ink);
  font-family: var(--font-stack);
  line-height: 1.5;
}

.auth-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 2rem 1rem;
}

.auth-card {
  width: min(100%, 26rem);
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: 0 1.5rem 4rem rgb(0 0 0 / 35%);
  padding: 2.5rem;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.auth-brand img {
  width: 32px;
  height: 32px;
}

.auth-card h1 {
  margin: 0 0 0.25rem;
  font-size: 1.6rem;
}

.auth-subtitle {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.auth-messages ul {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--brand-400);
  background: var(--page-bg);
  border-radius: 4px;
  list-style: none;
}

.auth-errors {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--danger);
  border-radius: 4px;
  background: #fff1f0;
  color: var(--danger);
}

.auth-errors ul {
  margin: 0;
  padding-left: 1.1rem;
}

.auth-field {
  margin: 0 0 1rem;
}

.auth-field label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 650;
  font-size: 0.92rem;
}

.auth-field input[type="text"],
.auth-field input[type="password"] {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  font: inherit;
  color: inherit;
  background: #fff;
}

.auth-field input:focus {
  outline: 2px solid var(--brand-300);
  outline-offset: 1px;
  border-color: var(--brand-400);
}

.field-error {
  display: block;
  margin-top: 0.3rem;
  color: var(--danger);
  font-size: 0.85rem;
}

.auth-remember {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  font-size: 0.92rem;
}

.auth-remember label {
  margin: 0;
  font-weight: 400;
}

.auth-submit {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 0;
  border-radius: var(--radius-control);
  background: var(--gradient-brand);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.auth-submit:hover {
  filter: brightness(1.05);
}

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

.auth-language {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.auth-language .language-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.auth-language select {
  flex: 1;
  min-width: 0;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  background: #fff;
}

.auth-language .button-secondary {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font: inherit;
  cursor: pointer;
}

.auth-footer {
  margin: 0;
  color: rgb(255 255 255 / 65%);
  font-size: 0.85rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}