/* ===== The TCM Home — Enhancements CSS ===== */
/* Reading Progress Bar, Back to Top, Feedback Widget, TOC, Cookie Consent, Search, Dark Mode, Author Bio */

/* ===== CSS Variables for Dark Mode ===== */
:root {
  --enh-dark-bg: #1a1916;
  --enh-dark-surface: #252320;
  --enh-dark-text: #e8e4dc;
  --enh-dark-muted: #a09a8e;
  --enh-dark-border: #3a3631;
}

html[data-theme="dark"] {
  --tcm-background: var(--enh-dark-bg) !important;
  --tcm-surface: var(--enh-dark-surface) !important;
  --tcm-surface-2: #2a2825 !important;
  --tcm-surface-3: #33302c !important;
  --tcm-foreground: var(--enh-dark-text) !important;
  --tcm-foreground-secondary: var(--enh-dark-muted) !important;
  --tcm-foreground-tertiary: #7a7468 !important;
  --tcm-card: var(--enh-dark-surface) !important;
  --tcm-card-foreground: var(--enh-dark-text) !important;
  --tcm-popover: var(--enh-dark-surface) !important;
  --tcm-popover-foreground: var(--enh-dark-text) !important;
  --tcm-muted: #2a2825 !important;
  --tcm-muted-foreground: var(--enh-dark-muted) !important;
  --tcm-border: var(--enh-dark-border) !important;
  --tcm-input: var(--enh-dark-border) !important;
  --bg: var(--enh-dark-bg) !important;
  --bg2: #2a2825 !important;
  --bg3: #33302c !important;
  --ink: var(--enh-dark-text) !important;
  --muted: var(--enh-dark-muted) !important;
  --rule: var(--enh-dark-border) !important;
  --white: var(--enh-dark-surface) !important;
}

html[data-theme="dark"] body {
  background: var(--enh-dark-bg) !important;
  color: var(--enh-dark-text) !important;
}
html[data-theme="dark"] img { opacity: 0.9; }
html[data-theme="dark"] .nav { background: rgba(26,25,22,0.95) !important; }
html[data-theme="dark"] .share-bar { background: var(--enh-dark-surface) !important; border-color: var(--enh-dark-border) !important; }
html[data-theme="dark"] .share-btn { background: var(--enh-dark-surface) !important; color: var(--enh-dark-muted) !important; border-color: var(--enh-dark-border) !important; }
html[data-theme="dark"] header.sticky { background: rgba(26,25,22,0.95) !important; }
html[data-theme="dark"] footer.bg-foreground { background: #0f0e0c !important; }

/* ===== Reading Progress Bar ===== */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #5F7D62, #7E997F);
  z-index: 9999;
  transition: width 0.1s ease-out;
  border-radius: 0 2px 2px 0;
}

/* ===== Back to Top Button ===== */
#back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #5F7D62;
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 9998;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#back-to-top:hover {
  background: #4D6650;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}
#back-to-top svg { width: 20px; height: 20px; }

/* ===== Dark Mode Toggle ===== */
#dark-mode-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--tcm-border, #E3DFD6);
  background: transparent;
  color: var(--tcm-foreground-secondary, #5C5A55);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}
#dark-mode-toggle:hover {
  background: var(--tcm-primary-50, #F1F5F1);
  color: var(--tcm-primary, #5F7D62);
  border-color: var(--tcm-primary, #5F7D62);
}
#dark-mode-toggle svg { width: 18px; height: 18px; }
html[data-theme="dark"] #dark-mode-toggle { color: var(--enh-dark-muted); border-color: var(--enh-dark-border); }
html[data-theme="dark"] #dark-mode-toggle:hover { color: #C1CEC2; background: #2a2825; }

/* ===== Table of Contents ===== */
#toc-container {
  margin: 24px 0;
  padding: 20px 24px;
  background: var(--tcm-surface-2, #F5F3EE);
  border-radius: 12px;
  border: 1px solid var(--tcm-border, #E3DFD6);
}
#toc-container .toc-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tcm-primary, #5F7D62);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
#toc-container .toc-title .toc-toggle {
  margin-left: auto;
  transition: transform 0.2s ease;
}
#toc-container.collapsed .toc-toggle { transform: rotate(-90deg); }
#toc-container .toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc-counter;
}
#toc-container .toc-list li {
  margin-bottom: 6px;
  padding-left: 8px;
}
#toc-container .toc-list li a {
  color: var(--tcm-foreground-secondary, #5C5A55);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.5;
  transition: color 0.2s;
  display: block;
}
#toc-container .toc-list li a:hover {
  color: var(--tcm-primary, #5F7D62);
}
#toc-container .toc-list li a.active {
  color: var(--tcm-primary, #5F7D62);
  font-weight: 600;
}
#toc-container.collapsed .toc-list { display: none; }
html[data-theme="dark"] #toc-container { background: #2a2825 !important; border-color: var(--enh-dark-border) !important; }

/* ===== Feedback Widget ===== */
#feedback-widget {
  margin: 32px 0 24px;
  padding: 24px;
  background: var(--tcm-surface-2, #F5F3EE);
  border-radius: 12px;
  border: 1px solid var(--tcm-border, #E3DFD6);
  text-align: center;
}
#feedback-widget .feedback-question {
  font-size: 1rem;
  font-weight: 600;
  color: var(--tcm-foreground, #2A2927);
  margin-bottom: 16px;
}
#feedback-widget .feedback-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
#feedback-widget .feedback-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid var(--tcm-border, #E3DFD6);
  background: var(--tcm-surface, #fff);
  color: var(--tcm-foreground-secondary, #5C5A55);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}
#feedback-widget .feedback-btn:hover {
  border-color: var(--tcm-primary, #5F7D62);
  color: var(--tcm-primary, #5F7D62);
  transform: translateY(-1px);
}
#feedback-widget .feedback-btn.selected {
  background: var(--tcm-primary, #5F7D62);
  color: #fff;
  border-color: var(--tcm-primary, #5F7D62);
}
#feedback-widget .feedback-btn svg { width: 16px; height: 16px; }
#feedback-widget .feedback-result {
  display: none;
  margin-top: 16px;
  padding: 12px;
  color: var(--tcm-primary, #5F7D62);
  font-size: 0.9rem;
}
#feedback-widget .feedback-result.visible { display: block; }
#feedback-widget .feedback-text {
  margin-top: 16px;
  display: none;
}
#feedback-widget .feedback-text.visible { display: block; }
#feedback-widget .feedback-text textarea {
  width: 100%;
  max-width: 400px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--tcm-border, #E3DFD6);
  background: var(--tcm-surface, #fff);
  color: var(--tcm-foreground, #2A2927);
  font-size: 0.9rem;
  font-family: inherit;
  resize: vertical;
  min-height: 60px;
}
#feedback-widget .feedback-text button {
  margin-top: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--tcm-primary, #5F7D62);
  color: #fff;
  border: none;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}
#feedback-widget .feedback-text button:hover { background: var(--tcm-primary-600, #4D6650); }
html[data-theme="dark"] #feedback-widget { background: #2a2825 !important; border-color: var(--enh-dark-border) !important; }
html[data-theme="dark"] #feedback-widget .feedback-btn { background: var(--enh-dark-surface) !important; color: var(--enh-dark-muted) !important; border-color: var(--enh-dark-border) !important; }
html[data-theme="dark"] #feedback-widget .feedback-text textarea { background: var(--enh-dark-surface) !important; color: var(--enh-dark-text) !important; border-color: var(--enh-dark-border) !important; }

/* ===== Cookie Consent Banner ===== */
#cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9997;
  background: var(--tcm-foreground, #2A2927);
  color: var(--tcm-background, #FAF8F3);
  padding: 16px 24px;
  display: none;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
}
#cookie-consent.visible { display: flex; }
#cookie-consent .cookie-text {
  flex: 1;
  min-width: 250px;
  font-size: 0.85rem;
  line-height: 1.5;
}
#cookie-consent .cookie-text a {
  color: var(--tcm-primary-200, #C1CEC2);
  text-decoration: underline;
}
#cookie-consent .cookie-buttons {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
#cookie-consent .cookie-btn {
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}
#cookie-consent .cookie-btn.accept {
  background: var(--tcm-primary, #5F7D62);
  color: #fff;
}
#cookie-consent .cookie-btn.accept:hover { background: var(--tcm-primary-600, #4D6650); }
#cookie-consent .cookie-btn.decline {
  background: transparent;
  color: var(--tcm-background, #FAF8F3);
  border: 1px solid rgba(255,255,255,0.3);
}
#cookie-consent .cookie-btn.decline:hover { background: rgba(255,255,255,0.1); }
html[data-theme="dark"] #cookie-consent { background: #0f0e0c !important; }

/* ===== Search Modal ===== */
#search-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  display: none;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
}
#search-modal.visible { display: flex; align-items: flex-start; justify-content: center; padding-top: 10vh; }
#search-modal .search-box {
  width: 90%;
  max-width: 640px;
  background: var(--tcm-surface, #fff);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  overflow: hidden;
}
#search-modal .search-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--tcm-border, #E3DFD6);
}
#search-modal .search-header svg { width: 20px; height: 20px; color: var(--tcm-muted-foreground, #8A8780); flex-shrink: 0; }
#search-modal .search-header input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 1.1rem;
  color: var(--tcm-foreground, #2A2927);
  font-family: inherit;
}
#search-modal .search-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--tcm-muted, #F5F3EE);
  color: var(--tcm-muted-foreground, #8A8780);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
}
#search-modal .search-close:hover { background: var(--tcm-surface-3, #EDEAE3); color: var(--tcm-foreground, #2A2927); }
#search-modal .search-results {
  max-height: 50vh;
  overflow-y: auto;
  padding: 8px;
}
#search-modal .search-result-item {
  display: block;
  padding: 12px 16px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--tcm-foreground, #2A2927);
  transition: background 0.15s;
}
#search-modal .search-result-item:hover { background: var(--tcm-surface-2, #F5F3EE); }
#search-modal .search-result-item .result-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 2px;
}
#search-modal .search-result-item .result-desc {
  font-size: 0.82rem;
  color: var(--tcm-muted-foreground, #8A8780);
  line-height: 1.4;
}
#search-modal .search-result-item .result-cat {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--tcm-primary, #5F7D62);
  margin-bottom: 4px;
}
#search-modal .search-empty {
  padding: 32px 20px;
  text-align: center;
  color: var(--tcm-muted-foreground, #8A8780);
  font-size: 0.9rem;
}
#search-modal .search-loading {
  padding: 24px;
  text-align: center;
  color: var(--tcm-muted-foreground, #8A8780);
  font-size: 0.9rem;
}
html[data-theme="dark"] #search-modal .search-box { background: var(--enh-dark-surface) !important; }
html[data-theme="dark"] #search-modal .search-header input { color: var(--enh-dark-text) !important; }
html[data-theme="dark"] #search-modal .search-result-item { color: var(--enh-dark-text) !important; }
html[data-theme="dark"] #search-modal .search-result-item:hover { background: #2a2825 !important; }
html[data-theme="dark"] #search-modal .search-close { background: #2a2825 !important; color: var(--enh-dark-muted) !important; }

/* ===== Search Trigger Button ===== */
#search-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--tcm-border, #E3DFD6);
  background: transparent;
  color: var(--tcm-foreground-secondary, #5C5A55);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}
#search-trigger:hover {
  background: var(--tcm-primary-50, #F1F5F1);
  color: var(--tcm-primary, #5F7D62);
  border-color: var(--tcm-primary, #5F7D62);
}
#search-trigger svg { width: 18px; height: 18px; }
html[data-theme="dark"] #search-trigger { color: var(--enh-dark-muted); border-color: var(--enh-dark-border); }

/* ===== Author Bio Section ===== */
.author-bio {
  margin: 32px 0;
  padding: 24px;
  background: var(--tcm-surface-2, #F5F3EE);
  border-radius: 12px;
  border: 1px solid var(--tcm-border, #E3DFD6);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.author-bio .author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--tcm-primary, #5F7D62);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  flex-shrink: 0;
}
.author-bio .author-info h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--tcm-foreground, #2A2927);
}
.author-bio .author-info .author-role {
  font-size: 0.8rem;
  color: var(--tcm-primary, #5F7D62);
  font-weight: 600;
  margin-bottom: 8px;
}
.author-bio .author-info p {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--tcm-foreground-secondary, #5C5A55);
  margin-bottom: 8px;
}
.author-bio .author-info .review-note {
  font-size: 0.8rem;
  color: var(--tcm-muted-foreground, #8A8780);
  font-style: italic;
}
html[data-theme="dark"] .author-bio { background: #2a2825 !important; border-color: var(--enh-dark-border) !important; }

/* ===== Newsletter Enhancement ===== */
.newsletter-success {
  display: none;
  padding: 12px 16px;
  border-radius: 8px;
  background: rgba(58,125,68,0.15);
  color: #3A7D44;
  font-size: 0.88rem;
  margin-top: 8px;
}
.newsletter-success.visible { display: block; }
.newsletter-error {
  display: none;
  padding: 12px 16px;
  border-radius: 8px;
  background: rgba(180,66,62,0.15);
  color: #B4423E;
  font-size: 0.88rem;
  margin-top: 8px;
}
.newsletter-error.visible { display: block; }

/* ===== Mobile Responsive ===== */
@media (max-width: 640px) {
  #back-to-top { bottom: 16px; right: 16px; width: 40px; height: 40px; }
  #cookie-consent { padding: 12px 16px; }
  #cookie-consent .cookie-text { font-size: 0.8rem; }
  #feedback-widget { padding: 16px; }
  #toc-container { padding: 16px; }
  .author-bio { flex-direction: column; padding: 16px; }
  #search-modal .search-box { width: 95%; }
}

/* ===== Print Styles ===== */
@media print {
  #reading-progress, #back-to-top, #cookie-consent, #search-modal,
  #search-trigger, #dark-mode-toggle, #feedback-widget, .author-bio,
  #toc-container { display: none !important; }
}