/*
 * theme.css
 * 项目唯一颜色变量定义文件
 * 参考：Linear 暗色科技风 UI 主题
 * 禁止在其他文件中重复定义或覆盖这些变量
 */

:root {
  /* ── 背景层级 ─────────────────────────────────────── */
  --color-bg-base:      #0f0f10;  /* 页面主背景（近纯黑） */
  --color-bg-surface:   #16161a;  /* 卡片、面板背景 */
  --color-bg-elevated:  #1e1e24;  /* 悬浮层、下拉菜单、输入框 */

  /* ── 边框 ────────────────────────────────────────── */
  --color-border:        #2a2a35;  /* 通用细线边框 */
  --color-border-hover:  #3a3a48;  /* 悬浮时边框 */

  /* ── 文字层级 ────────────────────────────────────── */
  --color-text-primary:    #e8e8f0;  /* 主要正文（近白，略带蓝调） */
  --color-text-secondary:  #8b8b9e;  /* 次级说明文字 */
  --color-text-muted:      #4a4a5a;  /* 禁用、占位符文字 */

  /* ── 品牌强调色（精选工具 · 靛蓝）────────────────────── */
  --color-accent:       #5b6cff;
  --color-accent-hover: #6b7aff;
  --color-accent-glow:  rgba(91, 108, 255, 0.28);
  --color-accent-dim:   rgba(91, 108, 255, 0.14);

  /* ── 功能色（课程/资料/思维）────────────────────────── */
  --color-success:       #00a3a3;
  --color-success-glow:  rgba(0, 163, 163, 0.26);
  --color-success-dim:   rgba(0, 163, 163, 0.14);
  --color-warning:       #d06a2e;
  --color-warning-glow:  rgba(208, 106, 46, 0.28);
  --color-warning-dim:   rgba(208, 106, 46, 0.14);
  --color-danger:        #c43d6e;
  --color-danger-glow:   rgba(196, 61, 110, 0.28);
  --color-danger-dim:    rgba(196, 61, 110, 0.14);
}

/* ── 全局基础样式 ──────────────────────────────────────────── */

* {
  box-sizing: border-box;
}

body {
  font-family: 'Plus Jakarta Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code, pre, .monospace {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ── 页面淡入动画 ───────────────────────────────────────────── */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── 滚动条样式（WebKit） ──────────────────────────────────── */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-hover);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ── 吉祥物浮动 + 光晕动画 ──────────────────────────────────── */

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes mascotGlow {
  0%, 100% {
    filter: drop-shadow(0 0 14px rgba(94, 106, 210, 0.5))
            drop-shadow(0 0 35px rgba(94, 106, 210, 0.2));
  }
  50% {
    filter: drop-shadow(0 0 28px rgba(94, 106, 210, 0.85))
            drop-shadow(0 0 60px rgba(94, 106, 210, 0.4));
  }
}

.mascot-float {
  animation: float 3s ease-in-out infinite,
             mascotGlow 3s ease-in-out infinite;
}

/* ── 页面背景光晕层 ──────────────────────────────────────────── */

.bg-orb-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* 左上角：靛蓝紫主光晕 */
.bg-orb-1 {
  position: absolute;
  top: -180px;
  left: -160px;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(94,106,210,0.18) 0%, rgba(94,106,210,0.06) 45%, transparent 70%);
  filter: blur(48px);
  animation: orbDrift1 28s ease-in-out infinite;
}

/* 右侧中部：青绿辅助光晕 */
.bg-orb-2 {
  position: absolute;
  top: 30%;
  right: -200px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(76,175,125,0.10) 0%, rgba(76,175,125,0.03) 45%, transparent 70%);
  filter: blur(56px);
  animation: orbDrift2 36s ease-in-out infinite;
}

/* 中下方：环境底光，极淡蓝紫 */
.bg-orb-3 {
  position: absolute;
  bottom: -120px;
  left: 35%;
  width: 480px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(94,106,210,0.08) 0%, rgba(94,106,210,0.02) 50%, transparent 70%);
  filter: blur(60px);
  animation: orbDrift3 42s ease-in-out infinite;
}

@keyframes orbDrift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(40px, 30px) scale(1.05); }
  66%       { transform: translate(-20px, 50px) scale(0.97); }
}

@keyframes orbDrift2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40%       { transform: translate(-50px, -40px) scale(1.08); }
  70%       { transform: translate(-20px, 30px) scale(0.95); }
}

@keyframes orbDrift3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%       { transform: translate(30px, -40px) scale(1.06); }
}

/* ── 轮播卡片 line-clamp 兼容 ───────────────────────────────── */

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-4 {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* -- Card hover glow shadow (replaces grey shadow) -- */

/* Tools card hover: accent blue-purple glow */
.card-glow-accent:hover {
  box-shadow: 0 0 0 1px var(--color-border-hover),
              0 4px 20px rgba(94, 106, 210, 0.18),
              0 1px 6px rgba(94, 106, 210, 0.10);
}

/* Courses card hover: success green glow */
.card-glow-success:hover {
  box-shadow: 0 0 0 1px var(--color-border-hover),
              0 4px 20px rgba(76, 175, 125, 0.18),
              0 1px 6px rgba(76, 175, 125, 0.10);
}

/* Resources card hover: warning amber glow */
.card-glow-warning:hover {
  box-shadow: 0 0 0 1px var(--color-border-hover),
              0 4px 20px rgba(245, 166, 35, 0.18),
              0 1px 6px rgba(245, 166, 35, 0.10);
}

/* Review card hover: neutral subtle glow */
.card-glow-neutral:hover {
  box-shadow: 0 0 0 1px var(--color-border-hover),
              0 4px 20px rgba(255, 255, 255, 0.04);
}

/* ── Hero 区块标题渐变 + 光影 ──────────────────── */
.hero-title-main {
  background: linear-gradient(135deg, #a5b4fc 0%, #818cf8 50%, #5e6ad2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 18px rgba(94, 106, 210, 0.55));
}

.hero-title-sub {
  background: linear-gradient(120deg, #e8e8f0 0%, #8b8b9e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 10px rgba(232, 232, 240, 0.2));
}

.cursor-blink {
  display: inline-block;
  animation: blink 0.7s step-end infinite;
  -webkit-text-fill-color: var(--color-accent);
  filter: none;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}



/* ── Hero Banner 类型标签（发光悬停效果）──────────────────────── */

.hero-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  transition: transform 0.15s ease-out,
              box-shadow 0.15s ease-out,
              border-color 0.15s ease-out,
              background-color 0.15s ease-out;
}

.hero-tag:hover {
  transform: translateY(-2px);
}

/* accent 靛蓝紫 */
.hero-tag--accent {
  background-color: var(--color-accent-dim);
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.hero-tag--accent:hover {
  background-color: rgba(91, 108, 255, 0.22);
  border-color: var(--color-accent-hover);
  box-shadow: 0 0 12px var(--color-accent-glow),
              0 0 24px rgba(91, 108, 255, 0.18),
              inset 0 0 8px rgba(91, 108, 255, 0.1);
}

/* success 绿色 */
.hero-tag--success {
  background-color: var(--color-success-dim);
  border-color: var(--color-success);
  color: var(--color-success);
}
.hero-tag--success:hover {
  background-color: rgba(0, 163, 163, 0.22);
  border-color: var(--color-success);
  box-shadow: 0 0 12px var(--color-success-glow),
              0 0 24px rgba(0, 163, 163, 0.18),
              inset 0 0 8px rgba(0, 163, 163, 0.1);
}

/* warning 琥珀橙 */
.hero-tag--warning {
  background-color: var(--color-warning-dim);
  border-color: var(--color-warning);
  color: var(--color-warning);
}
.hero-tag--warning:hover {
  background-color: rgba(208, 106, 46, 0.22);
  border-color: var(--color-warning);
  box-shadow: 0 0 12px var(--color-warning-glow),
              0 0 24px rgba(208, 106, 46, 0.18),
              inset 0 0 8px rgba(208, 106, 46, 0.1);
}

/* danger 玫红 */
.hero-tag--danger {
  background-color: var(--color-danger-dim);
  border-color: var(--color-danger);
  color: var(--color-danger);
}
.hero-tag--danger:hover {
  background-color: rgba(196, 61, 110, 0.22);
  border-color: var(--color-danger);
  box-shadow: 0 0 12px var(--color-danger-glow),
              0 0 24px rgba(196, 61, 110, 0.18),
              inset 0 0 8px rgba(196, 61, 110, 0.1);
}

/* ── Hero 浮卡错开上下浮动动画 ─────────────────────────────────── */

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

/* 浮卡基础样式 */
.hero-float-card {
  animation: floatCard 3s ease-in-out infinite;
  box-shadow: 0 4px 20px var(--color-accent-glow),
              0 1px 6px rgba(94, 106, 210, 0.12);
}

.hero-float-card--delay1 { animation-delay: 0s; }
.hero-float-card--delay2 { animation-delay: 0.3s; }
.hero-float-card--delay3 { animation-delay: 0.6s; }

/* ── 渐变分隔线（两端淡出，与内容宽度对齐）────────────────────── */

.divider-fade {
  height: 1px;
  border: none;
  background: linear-gradient(
    to right,
    transparent 0%,
    var(--color-border) 15%,
    var(--color-border) 85%,
    transparent 100%
  );
  margin: 0;
}

/* ── 搜索框 ─────────────────────────────────────── */
.search-box {
  display: flex;
  align-items: center;
  gap: 0;
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-elevated);
  transition: border-color 0.15s, box-shadow 0.15s;
  overflow: hidden;
}
.search-box:hover {
  border-color: var(--color-accent);
}
.search-box:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

/* ── 内容卡片通用 hover（替代 inline onmouseover/onmouseout）──────── */

.content-card {
  --card-glow-color: var(--color-accent);
  --card-glow-shadow: var(--color-accent-glow);
  border: 1px solid rgba(255,255,255,0.05);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.content-card:hover {
  border-color: var(--card-glow-color);
  box-shadow: 0 0 0 1px var(--card-glow-color),
              0 0 20px var(--card-glow-shadow),
              0 8px 28px rgba(0,0,0,0.22);
  transform: translateY(-3px);
}

/* 各模块卡片色系 */
.content-card--accent {
  --card-glow-color: var(--color-accent);
  --card-glow-shadow: var(--color-accent-glow);
}
.content-card--success {
  --card-glow-color: var(--color-success);
  --card-glow-shadow: var(--color-success-glow);
}
.content-card--warning {
  --card-glow-color: var(--color-warning);
  --card-glow-shadow: var(--color-warning-glow);
}
.content-card--danger {
  --card-glow-color: var(--color-danger);
  --card-glow-shadow: var(--color-danger-glow);
}

/* 卡片底部模块色装饰线 */
.content-card .card-bottom-line {
  height: 2px;
  background: linear-gradient(90deg, var(--card-glow-color), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}
.content-card:hover .card-bottom-line {
  opacity: 0.6;
}

/* ── 搜索按钮 hover ──────────────────────────────────────────────── */

.search-btn {
  background-color: var(--color-accent);
  color: #fff;
  transition: background-color 0.15s, transform 0.15s;
}

.search-btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* ── 轮播箭头按钮 hover ──────────────────────────────────────────── */

.carousel-arrow-btn {
  transition: border-color 0.15s, color 0.15s;
}

.carousel-arrow-btn:hover {
  border-color: var(--color-border-hover) !important;
  color: var(--color-text-primary) !important;
}

/* ── 打字机彩虹渐变文字 ── */
.typewriter-rainbow {
  background: linear-gradient(90deg, #5e6ad2, #06b6d4, #10b981, #f59e0b, #ef4444, #a855f7, #5e6ad2);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: rainbowShift 4s linear infinite;
}

@keyframes rainbowShift {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ── 富文本内容区域：前台详情页图片组并排显示 ─────────────────── */
.ql-image-row {
  display: flex !important;
  gap: 8px;
  margin: 8px 0;
  width: 100%;
  align-items: flex-start;
}
.ql-image-row img {
  flex: 1;
  min-width: 0;
  border-radius: 4px;
  display: block;
  height: auto;
  width: 100%;
}