/* ==========================================================================
   一场文化 (YC CULTURE) - 官方网站样式表
   Minimalist Editorial & Studio Design System
   ========================================================================== */

:root {
  /* 基础配色 - 纸感浅色 (Paper Light) */
  --bg-main: #FAF9F6;
  --bg-card: #FFFFFF;
  --bg-card-subtle: #F4F4F0;
  --text-main: #18181B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border-color: #E2E8F0;
  --border-light: #F1F5F9;

  /* 品牌高定配色 (默认：方案2B 黑金经典) */
  --brand-primary: #1A1A1A;
  --brand-secondary: #C5A059;
  --brand-accent-glow: rgba(197, 160, 89, 0.15);

  /* 阴影体系 */
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 10px 30px -4px rgba(0, 0, 0, 0.08);

  /* 字体家族 */
  --font-serif: "Playfair Display", "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* 深色极夜模式 (Studio Dark Mode) */
[data-theme="dark"] {
  --bg-main: #0C0C0E;
  --bg-card: #151518;
  --bg-card-subtle: #1C1C21;
  --text-main: #F4F4F5;
  --text-muted: #94A3B8;
  --text-light: #64748B;
  --border-color: #27272A;
  --border-light: #1E1E24;

  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 14px 40px rgba(0, 0, 0, 0.6);
}

/* 品牌配色方案 2: 松石青绿 */
[data-palette="teal"] {
  --brand-primary: #117A65;
  --brand-secondary: #F39C12;
  --brand-accent-glow: rgba(17, 122, 101, 0.18);
}

/* 品牌配色方案 3: 水墨朱砂 */
[data-palette="cinnabar"] {
  --brand-primary: #2D3436;
  --brand-secondary: #C0392B;
  --brand-accent-glow: rgba(192, 57, 43, 0.18);
}

/* 全局重置与基础 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

::selection {
  background-color: var(--brand-secondary);
  color: #FFFFFF;
}

/* 字体排印辅助 */
.font-serif {
  font-family: var(--font-serif);
}

.font-mono {
  font-family: var(--font-mono);
}

.tracking-wide-custom {
  letter-spacing: 0.12em;
}

.tracking-widest-custom {
  letter-spacing: 0.25em;
}

/* 装饰线条与网格 */
.hairline-b {
  border-bottom: 1px solid var(--border-color);
}

.hairline-t {
  border-top: 1px solid var(--border-color);
}

.hairline-r {
  border-right: 1px solid var(--border-color);
}

.hairline-l {
  border-left: 1px solid var(--border-color);
}

/* 导航栏毛玻璃 */
.glass-header {
  background-color: rgba(250, 249, 246, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

[data-theme="dark"] .glass-header {
  background-color: rgba(12, 12, 14, 0.88);
}

/* 极简卡片 */
.editorial-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.editorial-card:hover {
  border-color: var(--brand-secondary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

/* 按钮样式 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.85rem;
  background-color: var(--brand-primary);
  color: #FFFFFF;
  font-weight: 500;
  letter-spacing: 0.08em;
  font-size: 0.9rem;
  border-radius: 2px;
  border: 1px solid var(--brand-primary);
  transition: all 0.25s ease;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: var(--brand-secondary);
  border-color: var(--brand-secondary);
  color: #FFFFFF;
  box-shadow: 0 4px 14px var(--brand-accent-glow);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.85rem;
  background-color: transparent;
  color: var(--text-main);
  font-weight: 500;
  letter-spacing: 0.08em;
  font-size: 0.9rem;
  border-radius: 2px;
  border: 1px solid var(--border-color);
  transition: all 0.25s ease;
  cursor: pointer;
  text-decoration: none;
}

.btn-outline:hover {
  border-color: var(--brand-secondary);
  color: var(--brand-secondary);
}

/* 品牌强调色工具类 */
.text-brand-accent {
  color: var(--brand-secondary);
}

.bg-brand-accent {
  background-color: var(--brand-secondary);
}

.border-brand-accent {
  border-color: var(--brand-secondary);
}

/* 博客文章模态窗口排版 (Article Reader View) */
.article-content {
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--text-main);
}

.article-content p {
  margin-bottom: 1.5rem;
  text-align: justify;
}

.article-content blockquote {
  padding-left: 1.5rem;
  border-left: 3px solid var(--brand-secondary);
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-muted);
  margin: 2rem 0;
  font-size: 1.15rem;
}

.article-content h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 2.2rem 0 1rem 0;
  letter-spacing: 0.05em;
  color: var(--text-main);
}

/* 交互模态窗口 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 1rem;
}

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

.modal-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 820px;
  max-height: 88vh;
  overflow-y: auto;
  border-radius: 4px;
  padding: 2.5rem;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-overlay.active .modal-container {
  transform: translateY(0);
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-secondary);
}

/* 动效与指示器 */
@keyframes pulse-subtle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.animate-pulse-subtle {
  animation: pulse-subtle 2.5s infinite ease-in-out;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .modal-container {
    padding: 1.5rem;
  }
}