/* 字体定义 - Noto Sans SC */
@font-face {
  font-family: 'Noto Sans SC';
  src: url('https://static.ocfun.online/oc40/fonts/noto-sans-sc.woff2') format('woff2'),
       url('https://static.ocfun.online/oc40/fonts/noto-sans-sc.woff') format('woff');
  font-display: swap;
  font-weight: 400;
  font-style: normal;
}

/* CSS变量定义 - 统一深色主题 (Portal Style) */
:root {
  /* 品牌色 */
  --brand: #ff5c5c;
  --brand-strong: #ff7474;
  --brand-weak: #ff8c8c;
  
  /* 兼容 OC40 旧变量名 */
  --primary-color: var(--brand);
  --primary-hover: var(--brand-strong);
  --primary-active: #ff4444;

  /* 背景色 */
  --bg: #0b0f1c;
  --bg-card: #11182b;
  --bg-card-2: #0f1322;
  --bg-input: rgba(255, 255, 255, 0.04);
  
  /* 兼容 OC40 旧变量名 */
  --bg-primary: var(--bg);
  --bg-secondary: var(--bg-card-2);

  /* 玻璃拟态 */
  --glass: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
  
  /* 兼容 OC40 旧变量名 */
  --border-color: var(--border);
  --shadow-card: var(--shadow);
  --shadow-button: 0 8px 20px rgba(255, 92, 92, 0.25);

  /* 文字颜色 */
  --text-primary: #f5f7ff;
  --text-secondary: #c7d0e9;
  --text-muted: #8ea0c7;
  --text-disabled: #475569;
  
  /* 圆角 & 间距 */
  --radius: 18px;
  --radius-lg: 24px;
  --radius-sm: 10px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* 兼容 OC40 旧变量名 */
  --radius-md: 14px;
  --radius-xl: 24px;

  /* 字体 */
  --font-sans: "Noto Sans SC", "Inter", "SF Pro Display", "Segoe UI", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-family: var(--font-sans);
  
  /* 字体大小兼容 */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;

  /* 动画 */
  --transition: 160ms ease;
  --transition-fast: var(--transition);
  
  /* 渐变背景 */
  --gradient: radial-gradient(circle at 20% 20%, rgba(255, 92, 92, 0.12), transparent 28%),
    radial-gradient(circle at 80% 0%, rgba(91, 200, 255, 0.12), transparent 30%),
    radial-gradient(circle at 50% 90%, rgba(255, 164, 92, 0.08), transparent 32%),
    linear-gradient(135deg, #0b0f1c 0%, #0c1121 40%, #0f162b 100%);
  --gradient-bg: var(--gradient);
}

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

body {
  margin: 0;
  background: var(--gradient);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

/* 工具类 */
.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.4s ease-out;
}

.slide-in {
  animation: slideIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* 标题样式 */
.title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, #fff, #c7d0e9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  font-size: 1.1rem;
}

/* 卡片组件 */
.card {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing-lg);
}

/* 按钮组件 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  width: 100%;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, #ff5c5c, #ff8f70);
  color: #0c0f1a;
  box-shadow: 0 8px 20px rgba(255, 92, 92, 0.25);
  border: none;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(255, 92, 92, 0.35);
}

.btn-secondary {
  background: var(--glass);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-disabled, .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--glass);
}

/* 输入框 */
.form-input {
  width: 100%;
  padding: 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 16px;
  transition: all var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--brand);
  background: rgba(255, 255, 255, 0.08);
}

/* 选项卡片 (MBTI/OC40 通用) */
.choice-box {
  display: block;
  width: 100%;
  padding: 16px 20px;
  margin-bottom: 12px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text-secondary);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 16px;
}

.choice-box:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateX(4px);
  color: var(--text-primary);
}

.choice-box.selected {
  background: rgba(255, 92, 92, 0.15);
  border-color: var(--brand);
  color: #fff;
  box-shadow: 0 0 0 1px var(--brand);
}

/* 进度条 */
.progress {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #ff5c5c, #ff8f70);
  border-radius: 3px;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px rgba(255, 92, 92, 0.5);
}

/* 认证相关 */
/* .auth-container 样式已移除，改为在 HTML 中使用内联样式 padding: 20px，以保持与 MBTI 一致的顶部对齐流式布局 */

.auth-card {
  margin: 0 auto;
  max-width: 500px;
  width: 100%;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.auth-mode-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.2);
  padding: 4px;
  border-radius: 14px;
  margin-bottom: 24px;
}

.auth-mode-tabs .tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
}

.auth-mode-tabs .tab.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

.code-input-group {
  display: flex;
  gap: 10px;
}

.btn-send {
  width: 120px;
  padding: 0 16px;
  font-size: 14px;
  white-space: nowrap;
  background: var(--glass);
  color: var(--text-primary);
  border: 1px solid var(--border);
  height: initial; /* Reset height */
}

/* 提示信息 */
.info-box {
  background: rgba(255, 92, 92, 0.1);
  border: 1px solid rgba(255, 92, 92, 0.2);
  border-radius: 12px;
  padding: 16px;
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 20px;
}

.form-feedback {
  margin-top: 8px;
  font-size: 14px;
  min-height: 20px;
}
.form-feedback.is-error { color: #ff7676; }
.form-feedback.is-success { color: #2bd498; }

.legacy-hint {
  color: var(--brand); 
  font-size: 12px; 
  margin-top: 4px;
}

/* =========================================
   OC40 特有样式保留
   ========================================= */

/* OC40 题目导航 */
.btn-nav-grid {
    padding: 6px 12px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-nav-grid:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

/* OC40 导航模态框 */
.nav-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.nav-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.nav-modal-content {
    background: #1a1f2e;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.nav-modal-overlay.active .nav-modal-content {
    transform: scale(1);
}

.question-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 10px;
    padding: 20px;
    overflow-y: auto;
}

.grid-item {
    aspect-ratio: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.5);
    cursor: not-allowed;
    font-size: 14px;
    transition: all 0.2s;
}

.grid-item.completed {
    background: rgba(52, 211, 153, 0.1); /* Greenish */
    border-color: rgba(52, 211, 153, 0.3);
    color: #34d399;
    cursor: pointer;
}

.grid-item.current {
    background: rgba(255, 92, 92, 0.2); /* Brand color */
    border-color: #ff5c5c;
    color: #ff5c5c;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(255, 92, 92, 0.2);
}

.grid-item.completed:hover, .grid-item.current:hover {
    transform: translateY(-2px);
    filter: brightness(1.2);
}

/* Likert Slider */
.likert-container { margin: 24px 0; }
.likert-label { color: var(--text-secondary); margin-bottom: 12px; }
.likert-slider { display: flex; align-items: center; gap: 16px; }
.likert-input {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  appearance: none;
}
.likert-input::-webkit-slider-thumb {
  appearance: none;
  width: 24px;
  height: 24px;
  background: var(--brand);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(255, 92, 92, 0.4);
  border: 2px solid #fff;
}

/* 促销按钮样式 */
.btn-promo {
  background: linear-gradient(135deg, #10B981, #34D399);
  color: #0c0f1a;
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.25);
  border: none;
}

.btn-promo:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(16, 185, 129, 0.35);
  filter: brightness(1.1);
}

@keyframes pulse-promo {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
}

.btn-promo {
  animation: pulse-promo 2s infinite;
}

.btn-lg {
  padding: 16px 28px;
  font-size: var(--font-size-lg);
  min-height: 56px;
}

.btn-block { width: 100%; }

/* Card Header/Title from OC40 */
.card-header {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

/* Modal from OC40 (for consistency if used) */
.modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal.hidden { display: none; }

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 440px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  color: var(--text-primary);
  animation: slideIn 0.3s ease-out;
}

/* Portal Hint */
.portal-hint {
  background: rgba(255, 92, 92, 0.08);
  border: 1px solid rgba(255, 92, 92, 0.2);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 24px;
  text-align: center;
  font-size: 14px;
  color: var(--text-secondary);
}
.portal-hint a { color: var(--brand); font-weight: 700; }

/* 80题入口 */
.btn-80-entry {
  background: linear-gradient(135deg, #FF5C5C, #FF7777);
  color: #0c0f1a;
  border: none;
  border-radius: 14px;
  padding: 16px;
  font-weight: 700;
  width: 100%;
  margin-top: 16px;
  display: none;
}
.btn-80-entry.show { display: flex; animation: fadeIn 0.4s; }

/* =========================================
   OC40 导航条样式（参考 MBTI）
   ========================================= */

/* 导航条 */
.oc40-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 12px 20px;
}

.oc40-navbar-inner {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.oc40-navbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.oc40-navbar-back {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  color: #94a3b8;
  text-decoration: none;
  font-size: 14px;
  border-radius: 8px;
  transition: all 0.2s;
}

.oc40-navbar-back:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.oc40-navbar-title {
  font-weight: 600;
  font-size: 15px;
  color: #e2e8f0;
}

.oc40-navbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 用户状态区 */
.oc40-user-area {
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

.oc40-login-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #94a3b8;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.oc40-login-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 92, 92, 0.3);
}

/* 下拉触发按钮（余额+下拉箭头） */
.oc40-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.oc40-dropdown-trigger:hover {
  background: rgba(255, 255, 255, 0.1);
}

.oc40-balance-icon {
  color: #fbbf24;
}

.oc40-balance-value {
  font-weight: 500;
  color: #fff;
  font-variant-numeric: tabular-nums;
  font-size: 14px;
}

.oc40-chevron {
  color: #94a3b8;
  transition: transform 0.2s;
}

/* 等级标签 */
.oc40-tier-badge {
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
}

.oc40-tier-basic {
  background: rgba(100, 116, 139, 0.2);
  color: #cbd5e1;
  border: 1px solid rgba(100, 116, 139, 0.3);
}

.oc40-tier-pro {
  background: linear-gradient(to right, rgba(255, 92, 92, 0.2), rgba(249, 115, 22, 0.2));
  color: #ff7474;
  border: 1px solid rgba(255, 92, 92, 0.3);
}

/* 下拉菜单 */
.oc40-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 8px;
  min-width: 160px;
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  padding: 4px 0;
  z-index: 200;
  display: none;
  animation: oc40DropdownFadeIn 0.15s ease-out;
}

.oc40-dropdown.show {
  display: block;
}

@keyframes oc40DropdownFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 下拉菜单头部（等级显示） */
.oc40-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.03);
}

.oc40-dropdown-label {
  font-size: 12px;
  color: #64748b;
}

.oc40-dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 16px;
  background: none;
  border: none;
  color: #cbd5e1;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s;
  text-align: left;
}

.oc40-dropdown-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.oc40-dropdown-danger {
  color: #f87171;
}

.oc40-dropdown-danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.oc40-dropdown-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: 4px 0;
}

/* 移动端适配 */
@media (max-width: 640px) {
  .oc40-navbar-back span {
    display: none;
  }
}

/* 响应式 */
@media (max-width: 640px) {
  .container { padding: 16px; }
  .title { font-size: 1.6rem; }
  .btn { padding: 14px; }
  .auth-card { padding: 24px; }
}