/* 登录页专用样式 — 仅 login.html 引用；令牌见 brand-tokens.css */

.login-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: var(--wbk-text);
  background-color: var(--wbk-bg);
  position: relative;
  overflow-x: hidden;
}

.login-page__pattern {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(
    circle at 2px 2px,
    var(--wbk-pattern) 1px,
    transparent 0
  );
  background-size: 24px 24px;
  z-index: 0;
}

.login-page__gradient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    ellipse 80% 60% at 50% 0%,
    rgba(13, 166, 242, 0.08),
    transparent 70%
  );
  z-index: 0;
}

.login-page__header,
.login-page__main,
.login-page__footer {
  position: relative;
  z-index: 1;
}

.login-page__header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--wbk-border);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
}

.login-page__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--wbk-primary);
}

.login-page__brand:hover {
  color: #0b8fd4;
}

.login-page__brand .brand-logo {
  width: 2rem;
  height: 2rem;
}

.login-page__brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--wbk-text);
}

.login-page__main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.login-page__card {
  width: 100%;
  max-width: 480px;
  border: 1px solid var(--wbk-border);
  border-radius: 0.75rem;
  background: #fff;
  box-shadow:
    0 1px 3px rgba(15, 23, 42, 0.06),
    0 0 20px var(--wbk-glow);
}

.login-page__card-body {
  padding: 2rem 1.75rem;
}

.login-page__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--wbk-primary);
  background: rgba(13, 166, 242, 0.1);
  border-radius: 9999px;
  padding: 0.25rem 0.75rem;
  margin-bottom: 0.75rem;
}

.login-page__title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--wbk-text);
}

.login-page__desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--wbk-text-muted);
  margin-bottom: 1.75rem;
}

.login-page__form .form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--wbk-text);
  margin-bottom: 0.375rem;
}

.login-page__field-group {
  margin-bottom: 1.25rem;
}

.login-page__input-wrap {
  position: relative;
}

.login-page__field-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  color: #94a3b8;
  pointer-events: none;
  transition: color 0.15s ease;
}

.login-page__input-wrap:focus-within .login-page__field-icon {
  color: var(--wbk-primary);
}

.login-page__control {
  padding: 0.75rem 0.875rem 0.75rem 2.75rem;
  background-color: var(--wbk-input-bg);
  border: 1px solid var(--wbk-border);
  border-radius: 0.5rem;
  font-size: 1rem;
}

.login-page__control:focus {
  background-color: #fff;
  border-color: var(--wbk-primary);
  box-shadow: 0 0 0 0.2rem rgba(13, 166, 242, 0.2);
}

.login-page__control--password {
  padding-right: 2.75rem;
}

.login-page__toggle-pwd {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  padding: 0.25rem 0.5rem;
  color: #94a3b8;
  line-height: 0;
  border-radius: 0.25rem;
}

.login-page__toggle-pwd:hover {
  color: var(--wbk-text);
}

.login-page__toggle-pwd:focus-visible {
  outline: 2px solid var(--wbk-primary);
  outline-offset: 2px;
}

.login-page__toggle-icon {
  width: 1.25rem;
  height: 1.25rem;
}

.login-page__submit {
  margin-top: 0.5rem;
  font-weight: 700;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  box-shadow: 0 4px 14px rgba(13, 166, 242, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.login-page__submit:hover {
  background-color: #0b8fd4;
  border-color: #0b8fd4;
}

.login-page__submit:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.login-page__captcha {
  margin-top: 0.25rem;
}

.login-page__captcha-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--wbk-text);
  margin-bottom: 0.5rem;
}

.login-page__captcha-loading,
.login-page__captcha-error {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 8rem;
  max-width: 350px;
  margin-left: auto;
  margin-right: auto;
  padding: 1rem;
  border-radius: 0.5rem;
  background: var(--wbk-input-bg);
  border: 1px solid var(--wbk-border);
  font-size: 0.875rem;
  color: var(--wbk-text-muted);
}

.login-page__captcha-error {
  color: #dc3545;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.login-page__captcha-retry,
.login-page__captcha-refresh {
  border: none;
  background: none;
  color: var(--wbk-primary);
  font-size: 0.8125rem;
  padding: 0;
  cursor: pointer;
}

.login-page__captcha-retry:hover,
.login-page__captcha-refresh:hover {
  text-decoration: underline;
}

.login-page__captcha-body {
  width: 100%;
  max-width: 350px;
  margin: 0 auto;
}

.login-page__captcha-image-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 0.5rem;
  background: var(--wbk-input-bg);
  border: 1px solid var(--wbk-border);
}

.login-page__captcha-master {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.login-page__captcha-tile {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
  z-index: 2;
}

.login-page__captcha-tile img {
  display: block;
  width: 100%;
  height: 100%;
}

.login-page__captcha-track {
  position: relative;
  width: 100%;
  margin-top: 0.75rem;
  border-radius: 0.5rem;
  background: #e2e8f0;
}

.login-page__captcha-thumb {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--wbk-primary);
  color: #fff;
  border-radius: 0.5rem;
  cursor: grab;
  user-select: none;
  touch-action: none;
}

.login-page__captcha-thumb:active {
  cursor: grabbing;
}

.login-page__captcha-thumb svg {
  width: 1.25rem;
  height: 1.25rem;
}

.login-page__captcha-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
}

.login-page__captcha-ok {
  font-size: 0.8125rem;
  color: #16a34a;
  font-weight: 600;
}

.login-page__captcha-pending {
  font-size: 0.8125rem;
  color: var(--wbk-text-muted);
}

.login-page__captcha-fail {
  font-size: 0.8125rem;
  color: #dc3545;
  font-weight: 600;
}

.login-page__submit-icon {
  width: 1.25rem;
  height: 1.25rem;
}

.login-page__back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--wbk-text-muted);
  text-decoration: none;
}

.login-page__back:hover {
  color: var(--wbk-primary);
}

.login-page__back-icon {
  width: 1rem;
  height: 1rem;
}

.login-page__footer {
  padding: 1rem 1.5rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--wbk-text-muted);
  border-top: 1px solid var(--wbk-border);
  background: rgba(255, 255, 255, 0.6);
}

@media (min-width: 576px) {
  .login-page__card-body {
    padding: 2.5rem 2.5rem;
  }
}