/* NovelAI Image Generator - Authentication Pages Styles */

:root {
  /* NovelAI 主色调 */
  --primary-color: #00ffff;
  --secondary-color: #ff6bff;
  --accent-color: #6b73ff;

  /* 背景色 */
  --bg-primary: #0a0a0a;
  --bg-secondary: #161616;
  --bg-tertiary: #1e1e1e;
  --bg-quaternary: #262626;

  /* 文字颜色 */
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --text-muted: #808080;
  --text-disabled: #4d4d4d;

  /* 边框颜色 */
  --border-primary: #333333;
  --border-secondary: #404040;
  --border-active: var(--primary-color);

  /* 状态颜色 */
  --success-color: #00ff88;
  --warning-color: #ffaa00;
  --error-color: #ff4444;
  --info-color: var(--primary-color);

  /* 阴影 */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.6);

  /* 动画 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* 布局 */
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
}

/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 14px;
  line-height: 1.6;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  min-height: 100vh;
}

/* 认证页面布局 */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 1000px;
  overflow: hidden;
  position: relative;
  z-index: 10;
  backdrop-filter: blur(10px);
}

.auth-header {
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-quaternary));
  padding: 30px 40px;
  border-bottom: 1px solid var(--border-primary);
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo svg {
  filter: drop-shadow(0 0 12px rgba(0, 255, 255, 0.4));
}

.logo h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo p {
  font-size: 14px;
  color: var(--text-secondary);
}

.auth-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 500px;
}

.auth-form-container {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.auth-form-container h2 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.auth-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.5;
}

/* 表单样式 */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input[type='text'],
.form-group input[type='email'],
.form-group input[type='password'] {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-quaternary);
  border: 2px solid var(--border-primary);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-size: 16px;
  transition: all var(--transition-normal);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 255, 255, 0.1);
  background: var(--bg-tertiary);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.input-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* 密码输入框 */
.password-input {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-fast);
}

.password-toggle:hover {
  color: var(--text-secondary);
}

.password-match {
  position: absolute;
  right: 50px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--success-color);
}

/* 密码强度指示器 */
.password-strength {
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.strength-bar {
  flex: 1;
  height: 4px;
  background: var(--border-primary);
  border-radius: 2px;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  background: var(--text-muted);
  width: 0%;
  transition: all var(--transition-normal);
  border-radius: 2px;
}

.strength-fill.weak {
  background: var(--error-color);
  width: 25%;
}

.strength-fill.medium {
  background: var(--warning-color);
  width: 50%;
}

.strength-fill.good {
  background: var(--info-color);
  width: 75%;
}

.strength-fill.strong {
  background: var(--success-color);
  width: 100%;
}

.strength-text {
  font-size: 12px;
  color: var(--text-muted);
  min-width: 60px;
}

/* 复选框样式 */
.checkbox-group {
  margin: 8px 0;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.5;
}

.checkbox-label input[type='checkbox'] {
  display: none;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-radius: var(--border-radius-sm);
  background: var(--bg-quaternary);
  position: relative;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  margin-top: 2px;
}

.checkbox-label input[type='checkbox']:checked + .checkmark {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.checkbox-label input[type='checkbox']:checked + .checkmark::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid var(--bg-primary);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 32px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: var(--bg-primary);
  border: 2px solid transparent;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 255, 255, 0.3);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.btn-primary:hover::before {
  left: 100%;
}

.form-actions {
  margin-top: 8px;
}

.form-actions .btn {
  width: 100%;
}

/* 加载动画 */
.spinner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.spinner svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 消息样式 */
.error-message,
.success-message {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: var(--border-radius);
  font-size: 14px;
  margin-top: 16px;
}

.error-message {
  background: rgba(255, 68, 68, 0.1);
  color: var(--error-color);
  border: 1px solid rgba(255, 68, 68, 0.2);
}

.success-message {
  background: rgba(0, 255, 136, 0.1);
  color: var(--success-color);
  border: 1px solid rgba(0, 255, 136, 0.2);
}

/* 认证页面底部 */
.auth-footer {
  margin-top: 32px;
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-primary);
}

.auth-footer p {
  font-size: 14px;
  color: var(--text-secondary);
}

.auth-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.auth-link:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* 信息面板 */
.auth-info {
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-quaternary));
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid var(--border-primary);
}

.welcome-message h3,
.feature-list h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.welcome-message p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.feature-list ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.feature-list li svg {
  color: var(--success-color);
  flex-shrink: 0;
}

.quota-info,
.security-note {
  margin-top: 32px;
  padding: 20px;
  background: rgba(0, 255, 255, 0.05);
  border: 1px solid rgba(0, 255, 255, 0.1);
  border-radius: var(--border-radius);
}

.quota-info h4,
.security-note h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary-color);
}

.quota-info p,
.security-note p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.quota-info strong {
  color: var(--primary-color);
}

/* 背景装饰 */
.auth-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

.background-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 25% 25%, rgba(0, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(255, 107, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(107, 115, 255, 0.05) 0%, transparent 50%);
  animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
  0%,
  100% {
    transform: translateX(0) translateY(0) rotate(0deg);
  }
  33% {
    transform: translateX(-10px) translateY(-10px) rotate(1deg);
  }
  66% {
    transform: translateX(10px) translateY(10px) rotate(-1deg);
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .auth-container {
    padding: 10px;
  }

  .auth-card {
    max-width: 100%;
  }

  .auth-content {
    grid-template-columns: 1fr;
  }

  .auth-info {
    border-left: none;
    border-top: 1px solid var(--border-primary);
    order: -1;
  }

  .auth-form-container,
  .auth-info {
    padding: 30px 20px;
  }

  .auth-header {
    padding: 20px;
  }

  .logo {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .logo h1 {
    font-size: 20px;
  }

  .auth-form-container h2 {
    font-size: 24px;
  }

  .feature-list ul {
    gap: 12px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 13px;
  }

  .auth-container {
    padding: 5px;
  }

  .auth-form-container,
  .auth-info {
    padding: 20px 15px;
  }

  .auth-header {
    padding: 15px;
  }

  .form-group input {
    padding: 12px;
    font-size: 14px;
  }

  .btn {
    padding: 14px 24px;
    font-size: 14px;
  }
}