* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --ink: #111111;
  --paper: #ffffff;
  --fog: #f3f3f3;
  --muted: #5f5f5f;
  --line: #111111;
  --shadow: 12px 12px 0 #111111;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
}

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

body {
  font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.08), transparent 28%),
    radial-gradient(circle at bottom right, rgba(255, 255, 255, 0.06), transparent 24%),
    #050505;
  background-size: 32px 32px, 32px 32px, auto, auto, auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

body.dashboard-page {
  display: block;
  padding: 0;
}

.auth-wrapper {
  width: 100%;
  max-width: 468px;
  background: var(--paper);
  border: 2px solid var(--line);
  border-radius: var(--radius-xl);
  padding: 42px 36px 36px;
  box-shadow: var(--shadow);
}

.auth-logo {
  display: grid;
  justify-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.auth-logo-mark {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  border: 2px solid var(--line);
  background: var(--ink);
  color: var(--paper);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-indent: 0.18em;
}

.auth-logo-text {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink);
}

.auth-title {
  text-align: center;
  font-size: 32px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin-bottom: 14px;
}

.auth-hint {
  max-width: 32ch;
  margin: 0 auto 28px;
  text-align: center;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.auth-message-stack {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.auth-error-message,
.auth-success-message {
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.5;
}

.auth-error-message {
  background: var(--paper);
  color: var(--ink);
}

.auth-success-message {
  background: var(--ink);
  color: var(--paper);
}

.auth-error-message.fade-out,
.auth-success-message.fade-out {
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.auth-wrapper form {
  display: flex;
  flex-direction: column;
}

.auth-wrapper label {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.auth-wrapper input[type="text"],
.auth-wrapper input[type="password"],
.auth-wrapper input[type="email"] {
  width: 100%;
  margin-bottom: 18px;
  padding: 14px 16px;
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.auth-wrapper input[type="text"]:focus,
.auth-wrapper input[type="password"]:focus,
.auth-wrapper input[type="email"]:focus {
  outline: none;
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}

input::placeholder,
textarea::placeholder {
  color: #8a8a8a;
}

.captcha-wrapper {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.captcha-wrapper input {
  flex: 1;
  margin-bottom: 0;
}

.captcha-wrapper button,
.auth-wrapper button[type="submit"] {
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.captcha-wrapper button {
  padding: 14px 16px;
  white-space: nowrap;
  font-size: 13px;
}

.auth-wrapper button[type="submit"] {
  width: 100%;
  margin-top: 8px;
  padding: 15px 18px;
  font-size: 16px;
}

.captcha-wrapper button:hover,
.auth-wrapper button[type="submit"]:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}

.captcha-wrapper button:disabled,
.auth-wrapper button[type="submit"]:disabled {
  background: #7d7d7d;
  border-color: #7d7d7d;
  box-shadow: none;
  transform: none;
  cursor: not-allowed;
}

.auth-links,
.auth-links-center {
  margin-top: 24px;
  text-align: center;
}

.auth-links {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.auth-links a,
.auth-links-center a {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.verified-info,
.verified-banner {
  margin-bottom: 20px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
}

.verified-info {
  background: var(--fog);
  color: var(--ink);
}

.verified-banner {
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  font-weight: 700;
}

@media (max-width: 640px) {
  body {
    padding: 18px;
  }

  .auth-wrapper {
    padding: 32px 22px 24px;
    box-shadow: 8px 8px 0 var(--ink);
  }

  .auth-title {
    font-size: 28px;
  }

  .captcha-wrapper {
    flex-direction: column;
  }

  .auth-links {
    gap: 10px;
  }
}