/* ========== login.css：登录页 ========== */
.login-app {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 背景装饰 */
.login-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.login-bg__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
}
.login-bg__orb--1 {
  width: 520px;
  height: 520px;
  top: -120px;
  left: -120px;
  background: radial-gradient(circle, var(--color-primary-light), transparent 70%);
  animation: orbFloat 18s ease-in-out infinite;
}
.login-bg__orb--2 {
  width: 460px;
  height: 460px;
  bottom: -140px;
  right: -100px;
  background: radial-gradient(circle, var(--color-accent), transparent 70%);
  opacity: 0.4;
  animation: orbFloat 22s ease-in-out infinite reverse;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
}
.login-bg__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 148, 136, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 148, 136, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

/* 双栏布局 */
.login-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--spacing-3xl);
  width: min(1120px, 92vw);
  max-height: 90vh;
  padding: var(--spacing-3xl);
  background-color: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  animation: slideUp 0.5s var(--ease-out) both;
}

/* 品牌区 */
.login-brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--spacing-xl);
}
.login-brand__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 96px;
  height: 96px;
  margin-bottom: var(--spacing-xl);
  color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary-soft), #fff);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-primary);
}
.login-brand__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}
.login-brand__subtitle {
  font-size: var(--font-size-base);
  letter-spacing: 0.18em;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  margin-bottom: var(--spacing-2xl);
}
.login-brand__features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
}
.login-brand__features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}
.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot--primary { background-color: var(--color-primary); box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.18); }
.dot--accent { background-color: var(--color-accent); box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.18); }
.dot--success { background-color: var(--color-success); box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.18); }

/* 表单面板 */
.login-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--spacing-2xl);
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}
.login-panel__header h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}
.login-panel__header p {
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.login-panel__header {
  margin-bottom: var(--spacing-2xl);
}

.login-form__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
}
.checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
}
.checkbox input {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
}
.login-form__attempts {
  font-size: var(--font-size-xs);
}
.login-form__attempts.is-warn { color: var(--color-danger); font-weight: var(--font-weight-medium); }

#loginBtn {
  margin-top: var(--spacing-sm);
  letter-spacing: 0.5em;
  text-indent: 0.5em;
}

.login-form__hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
  font-size: var(--font-size-xs);
}
.login-form__cred {
  padding: 2px 10px;
  background-color: var(--color-primary-bg);
  color: var(--color-primary-darker);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
}

.login-panel__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-lg);
  border-top: 1px dashed var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* 响应式：窄屏单列 */
@media (max-width: 960px) {
  .login-shell {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
  }
  .login-brand { display: none; }
  .login-brand__title { font-size: var(--font-size-2xl); }
}

@media (orientation: portrait) and (max-width: 768px) {
  .login-shell {
    width: 96vw;
    padding: var(--spacing-lg);
  }
  .login-panel { padding: var(--spacing-xl); }
}

/* ========== Splash 启动屏 ========== */
.splash {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a1a1f 0%, #0d2a30 50%, #0a1a1f 100%);
  color: #e6f7f5;
  font-family: 'Noto Sans SC', sans-serif;
  transition: opacity 0.3s ease;
}

.splash.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.splash__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md, 16px);
  text-align: center;
}

.splash__brand {
  color: var(--color-primary, #0d9488);
  filter: drop-shadow(0 0 24px rgba(13, 148, 136, 0.5));
  animation: splashPulse 2s ease-in-out infinite;
}

@keyframes splashPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: 0.85; }
}

.splash__title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin: 0;
}

.splash__subtitle {
  font-size: 0.875rem;
  color: rgba(230, 247, 245, 0.5);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0;
}

/* 旋转加载指示器 */
.splash__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(13, 148, 136, 0.2);
  border-top-color: var(--color-primary, #0d9488);
  border-radius: 50%;
  animation: splashSpin 0.8s linear infinite;
  margin-top: var(--spacing-sm, 8px);
}

@keyframes splashSpin {
  to { transform: rotate(360deg); }
}

.splash__status {
  font-size: 0.875rem;
  color: rgba(230, 247, 245, 0.7);
  margin: 0;
  min-height: 1.25em;
  transition: opacity 0.2s ease;
}