/* 
  Title: 金剛經講錄（道源老法師講）
  Author: Shilong
  Created-Date: 2023-04-09
*/

body {
  font-family: "KaiTi", "STKaiti", "楷体", serif;
  background-color: #f0e6d6;
  color: #4a4a4a;
  margin: 0;
  padding: 0;
  overscroll-behavior-x: contain;
}

.container {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }

.page {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  writing-mode: vertical-rl;
  text-orientation: upright;
  width: 100%;
  padding: 40px;
  box-sizing: border-box;
  border-left: 2px solid #4a4a4a;
  background-color: #f0e6d6;
  font-size: 24px;
  line-height: 1.6;
  position: absolute;
  top: 0;
  right: 0;
  transition: transform 0.5s ease;
  z-index: -1;
  overflow-y: scroll;
  height: 100vh;
  padding-right: 130px;
  
  will-change: transform;
  backface-visibility: hidden;
  
  overflow-x: auto; overflow-y: hidden; height: 100vh; -webkit-overflow-scrolling: touch; touch-action: pan-x; overscroll-behavior-x: contain; }

.page-number {
  font-weight: bold;
  writing-mode: vertical-rl;
  text-orientation: upright;
  margin-left: -32px; /* Adjust this value as needed */
  align-self: center;
}

.page h1 {
  font-size: 27px;
  font-weight: bold;
  margin-bottom: 20px;
}

.page p {
  margin: 0;
}

.p-center {
  align-self: center !important;
}

.p-top {
  align-self: start !important;
}

.controls {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
}

.font-bold {
  font-weight: bold;
}

button {
  font-size: 24px;
  padding: 10px;
  background-color: #4a4a4a;
  color: #f0e6d6;
  border: none;
  cursor: pointer;
  margin-bottom: 10px;
}

button:hover {
  background-color: #2c2c2c;
}

.page-animation {
  animation-duration: 0.5s;
  animation-fill-mode: forwards;
}

.page p + p {
  margin-right: 1.4em; /* Adjust this value to control the spacing between paragraphs */
}

.cover-h1 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 1.9rem;
  color: brown;
  font-size: 49px !important;
}


.cover-h2 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: end;
  letter-spacing: 0.7rem;
  font-size: 36px !important;
}

.cover-h3 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: start;
  letter-spacing: 0.1rem;
  font-size: 36px !important;
}

.kjj-h2 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 1.3rem;
  font-size: 36px !important;
}

.kjj-h3 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 1.1rem;
  font-size: 33px !important;
}

.hx-h1 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 1.1rem;
  font-size: 29px !important;
}

.hx-p {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 1.1rem;
  font-size: 26px !important;
}

.hx-p2 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: end;
  letter-spacing: 1.1rem;
  font-size: 25px !important;
}

.centered-image {
  display: block;
  max-width: 300px;
  height: auto;
  margin: 0 auto;
}


.responsive-image {
  display: block;
  max-height: 90%;
  width: auto;
  margin: 0 auto;
}


@media screen and (max-width: 767px) {
  .page {
    font-size: calc(2vw + 10px); /* 动态计算字体大小 */
    line-height: 1.8; /* 增加行高 */
    padding: 20px;
    height: 100%;
    overflow-y: hidden;
	padding-right: 130px;
    overflow-x: auto; overflow-y: hidden; height: 100vh; -webkit-overflow-scrolling: touch; touch-action: pan-x; overscroll-behavior-x: contain; }
  
  .cover-h1 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 1.6rem;
  color: brown;
  font-size: calc(2vw + 26px)!important; /* 动态计算字体大小 */
}


.cover-h2 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: end;
  letter-spacing: 0.5rem;
 font-size: calc(2vw + 16px)!important; /* 动态计算字体大小 */
}

.cover-h3 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: start;
  letter-spacing: 0.05rem;
 font-size: calc(2vw + 16px)!important; /* 动态计算字体大小 */
}

.kji-h2 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 0.5rem;
 font-size: calc(2vw + 29px)!important; /* 动态计算字体大小 */
}

.kji-h3 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 0.3rem;
 font-size: calc(2vw + 26px)!important; /* 动态计算字体大小 */
}

.hx-h1 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 0.4rem;
 font-size: calc(2vw + 19px)!important; /* 动态计算字体大小 */
}

.hx-p {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: center;
  letter-spacing: 0.4rem;
 font-size: calc(2vw + 16px)!important; /* 动态计算字体大小 */
}

.hx-p2 {
  font-weight: bold !important;
  writing-mode: vertical-rl;
  text-orientation: upright;
  align-self: end;
  letter-spacing: 0.3rem;
 font-size: calc(2vw + 12px)!important; /* 动态计算字体大小 */
}

  .centered-image {
    max-width: 200px;
  }

}
/* Table of contents adjustments */
.page.toc-page {
  justify-content: center;
  align-items: flex-end;
  gap: 3rem;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2.5rem;
}

.toc-list li {
  display: flex;
  align-items: center;
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.8rem;
  font-weight: bold;
  font-size: 26px;
  color: #4a2a1c;
}

.toc-list li::before {
  content: '•';
  color: #7b3f3f;
  font-size: 32px;
  margin-left: 0.8rem;
  margin-right: 0.8rem;
}

.toc-list a {
  color: inherit;
  text-decoration: none;
}

.toc-list a:hover {
  color: #b5482b;
}

.controls button.is-disabled,
.controls button[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}
.toc-list {
  gap: 1.8rem;
}

.toc-item a {
  display: inline-flex;
  align-items: center;
}
body.toc-open { overflow-x: auto;
  overflow-y: hidden; }

/* TOC overlay layout */
.toc-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.45);
  z-index: 1000;
}

.toc-overlay.is-active {
  display: flex;
}

.toc-overlay__backdrop {
  position: absolute;
  inset: 0;
}

.toc-overlay__panel {
  position: relative;
  width: min(96vw, 1200px);
  max-height: 88vh;
  background-color: #f0e6d6;
  border: 2px solid #4a4a4a;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.3);
  padding: clamp(28px, 4.5vw, 64px);
  display: flex;
  flex-direction: row-reverse;
  justify-content: flex-start;
  align-items: flex-start;
  gap: clamp(1.2rem, 3vw, 3.8rem);
  overflow: auto;
 overflow-x: auto; -webkit-overflow-scrolling: touch;  overflow-x: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }

.toc-overlay__title {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: clamp(0.8rem, 1.8vw, 1.4rem);
  font-size: clamp(24px, 2.6vw, 36px);
  color: #b5482b;
  margin: 0;
  flex: 0 0 auto;
}

.toc-overlay__close {
  position: absolute;
  top: clamp(8px, 1.8vw, 18px);
  left: clamp(8px, 1.8vw, 18px);
  font-size: clamp(26px, 2.6vw, 36px);
  background: transparent;
  border: none;
  color: #4a4a4a;
  cursor: pointer;
}

.toc-overlay__close:hover {
  color: #b5482b;
}

.toc-overlay__list {
  flex: 1 1 auto;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 10px;
  -webkit-overflow-scrolling: touch; overscroll-behavior: contain;  overflow-x: auto; -webkit-overflow-scrolling: touch;  overflow-x: auto; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch; }

.toc-overlay__list::-webkit-scrollbar {
  height: 10px;
}

.toc-overlay__list::-webkit-scrollbar-thumb {
  background-color: rgba(74, 74, 74, 0.35);
  border-radius: 6px;
}

.toc-overlay__list::-webkit-scrollbar-track {
  background-color: transparent;
}

.toc-overlay__list .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row-reverse;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: clamp(1rem, 2.4vw, 3rem);
}

.toc-overlay__list .toc-item {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: clamp(0.4rem, 1.1vw, 1.2rem);
  font-weight: bold;
  font-size: clamp(16px, 1.9vw, 26px);
  color: #4a2a1c;
  white-space: nowrap;
}

.toc-overlay__list .toc-item::before {
  content: "•";
  color: #7b3f3f;
  font-size: clamp(18px, 2.3vw, 30px);
  margin-left: clamp(0.4rem, 0.8vw, 1rem);
  margin-right: clamp(0.4rem, 0.8vw, 1rem);
}

.toc-overlay__list .toc-item a {
  color: inherit;
  text-decoration: none;
}

.toc-overlay__list .toc-item a:hover {
  color: #b5482b;
}

body.toc-open {
  overflow: hidden;
}

  .container { height: 100vh; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
  .page { position: relative; top: 0; right: auto; height: 100vh; }
}
@media (max-width: 768px) {
  html, body { height: 100%; overflow: hidden; }
  .container { display: block; height: 100vh; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
  .page { position: relative; top: 0; left: 0; right: auto; height: 100vh; overflow-x: scroll; overflow-y: hidden; -webkit-overflow-scrolling: touch; width: max-content; min-width: 100%; }
  .page, .container { touch-action: pan-x; }

  /* Mobile controls: slightly transparent so they don't cover text */
  .controls { right: 8px; bottom: 8px; gap: 8px; }
  .controls button {
    background-color: rgba(64,64,64,0.62);
    color: rgba(240,230,214,0.98);
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
    transition: background-color .2s, opacity .2s;
  }
  .controls button:hover { background-color: rgba(64,64,64,0.78); }
  .controls button:active { background-color: rgba(64,64,64,0.92); }
}
  .container { display: block; height: 100vh; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
  .page { position: relative; top: 0; left: 0; right: auto; height: 100vh; overflow-x: scroll; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
  .page, .container { touch-action: pan-x; }
}

  .container { display: block; height: 100vh; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; touch-action: pan-x; }
  .page { position: relative; top: 0; left: 0; right: auto; height: 100vh; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; touch-action: pan-x; width: max-content; min-width: 100%; }
}

  .container { display: block; height: 100vh; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; touch-action: pan-x; }
  .page { position: relative; top: 0; left: 0; right: auto; height: 100vh; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; touch-action: pan-x; }
}
/* Force transparent controls on small screens (override) */
@media (max-width: 900px) {
  .controls button {
    background-color: rgba(64,64,64,0.55) !important;
    color: rgba(240,230,214,0.98) !important;
    border: 1px solid rgba(255,255,255,0.25) !important;
    box-shadow: 0 2px 6px rgba(0,0,0,0.12) !important;
  }
  .controls button:hover { background-color: rgba(64,64,64,0.75) !important; }
  .controls button:active { background-color: rgba(64,64,64,0.9) !important; }
}

/* Mobile controls auto-fade */
@media (max-width: 900px) {
  .controls { right: 8px; bottom: 10px; gap: 8px; z-index: 50; }
  .controls button {
    font-size: 16px; padding: 6px 10px; border-radius: 6px;
    background-color: rgba(64,64,64,0.65); color: rgba(240,230,214,0.98);
    border: 1px solid rgba(255,255,255,0.25);
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
    opacity: .8; transition: opacity .25s, background-color .2s;
  }
  .controls.is-faded button { opacity: .38; }
  .controls button:active { opacity: .95; }
}
/* Mobile bottom safe area + extra breathing space */
@media (max-width: 900px) {
  .container { height: 100svh; height: 100dvh; }
  .page { height: 100svh; height: 100dvh; padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 20px); box-sizing: border-box; }
  .controls { bottom: calc(env(safe-area-inset-bottom, 0px) + 10px); }
}
.toc-overlay__list .toc-item { flex: 0 0 auto; }
.toc-overlay__list .toc-list { width: max-content; display: inline-flex; flex-wrap: nowrap; }
/* Tighten TOC item spacing (works on PC & mobile) */
.toc-overlay__list .toc-list { gap: 1rem !important; }
.toc-overlay__panel, .toc-overlay__list { touch-action: pan-x; }
.controls, .controls.is-faded { pointer-events: auto; }