/* ==========================================================================
   furqaankhazi.com — In-Browser PDF Reader Stylesheet
   Book: "Get Used to Your New Reality" by Furqaan Khazi
   ========================================================================== */

:root {
  --reader-accent: #825b0c;
  --reader-accent-hover: #9c6e12;
  --reader-accent-light: #f5eedf;
  --reader-bg: #1e1b18;
  --reader-surface: #2a2520;
  --reader-surface-hover: #352f29;
  --reader-border: #3d362e;
  --reader-text: #f3ede2;
  --reader-text-muted: #b3a795;
  --reader-white: #ffffff;
  --reader-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --header-height: 3.75rem;
  --font-heading: 'Anton', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-body);
  background-color: var(--reader-bg);
  color: var(--reader-text);
  -webkit-font-smoothing: antialiased;
}

/* ---------------- Progress Bar ---------------- */
.reader-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #825b0c, #d4a34b, #eac875);
  z-index: 1100;
  transition: width 0.15s ease-out;
}

/* ---------------- Reader Header / Top Bar ---------------- */
.reader-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--reader-surface);
  border-bottom: 1px solid var(--reader-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 1000;
  user-select: none;
  gap: 0.75rem;
}

.reader-header-left,
.reader-header-center,
.reader-header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.reader-header-left {
  flex: 1 1 auto;
  min-width: 0;
}

.reader-header-center {
  flex: 0 0 auto;
}

.reader-header-right {
  flex: 1 1 auto;
  justify-content: flex-end;
  min-width: 0;
}

/* Header Brand / Title */
.reader-book-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  margin-left: 0.25rem;
}

.reader-book-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--reader-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-transform: uppercase;
}

.reader-book-author {
  font-size: 0.75rem;
  color: var(--reader-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Reader Buttons */
.reader-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  height: 2.25rem;
  padding: 0 0.65rem;
  border-radius: 0.375rem;
  background-color: transparent;
  color: var(--reader-text);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.reader-btn svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: currentColor;
  flex-shrink: 0;
}

.reader-btn:hover {
  background-color: var(--reader-surface-hover);
  color: #ffffff;
}

.reader-btn:active {
  transform: scale(0.97);
}

.reader-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.reader-btn.active {
  background-color: var(--reader-surface-hover);
  border-color: var(--reader-accent);
  color: #ffffff;
}

.reader-back-btn {
  color: var(--reader-text-muted);
  font-weight: 500;
  border: 1px solid var(--reader-border);
}

.reader-back-btn:hover {
  color: #ffffff;
  border-color: var(--reader-text-muted);
}

.reader-cta-btn {
  background-color: var(--reader-accent);
  color: #ffffff;
  font-weight: 600;
  padding: 0 0.9rem;
}

.reader-cta-btn:hover {
  background-color: var(--reader-accent-hover);
  color: #ffffff;
}

.reader-download-btn {
  border: 1px solid var(--reader-border);
  color: var(--reader-text);
}

.reader-download-btn:hover {
  border-color: var(--reader-accent);
  color: #ffffff;
}

/* Page Navigation Controls */
.reader-page-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background-color: rgba(0, 0, 0, 0.25);
  padding: 0.15rem 0.4rem;
  border-radius: 0.375rem;
  border: 1px solid var(--reader-border);
}

.reader-page-input-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--reader-text-muted);
}

.reader-page-input {
  width: 2.85rem;
  height: 1.85rem;
  padding: 0 0.25rem;
  text-align: center;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  background-color: var(--reader-surface);
  color: #ffffff;
  border: 1px solid var(--reader-border);
  border-radius: 0.25rem;
  -moz-appearance: textfield;
}

.reader-page-input::-webkit-outer-spin-button,
.reader-page-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.reader-page-input:focus {
  outline: none;
  border-color: var(--reader-accent);
}

/* Zoom Controls */
.reader-zoom-group {
  display: flex;
  align-items: center;
  background-color: rgba(0, 0, 0, 0.25);
  border-radius: 0.375rem;
  border: 1px solid var(--reader-border);
  padding: 0.15rem;
}

.reader-zoom-val {
  min-width: 3.25rem;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--reader-text-muted);
}

/* ---------------- Table of Contents Sidebar / Drawer ---------------- */
.reader-toc-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(3px);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.reader-toc-overlay.open {
  opacity: 1;
  visibility: visible;
}

.reader-toc-drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 22rem;
  max-width: 90vw;
  background-color: var(--reader-surface);
  border-right: 1px solid var(--reader-border);
  z-index: 1060;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
}

.reader-toc-drawer.open {
  transform: translateX(0);
}

.reader-toc-header {
  padding: 1.15rem 1.25rem;
  border-bottom: 1px solid var(--reader-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.reader-toc-header h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--reader-text);
  margin: 0;
}

.reader-toc-search-wrap {
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--reader-border);
}

.reader-toc-search {
  width: 100%;
  padding: 0.55rem 0.85rem;
  border-radius: 0.375rem;
  background-color: var(--reader-bg);
  border: 1px solid var(--reader-border);
  color: var(--reader-text);
  font-family: var(--font-body);
  font-size: 0.85rem;
}

.reader-toc-search:focus {
  outline: none;
  border-color: var(--reader-accent);
}

.reader-toc-list {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 0.5rem 0;
  list-style: none;
}

.reader-toc-list::-webkit-scrollbar {
  width: 6px;
}

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

.reader-toc-item button {
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 1.25rem;
  background: none;
  border: 0;
  color: var(--reader-text-muted);
  font-family: var(--font-body);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1.4;
}

.reader-toc-item button:hover {
  background-color: var(--reader-surface-hover);
  color: #ffffff;
}

.reader-toc-item.active button {
  background-color: rgba(130, 91, 12, 0.2);
  color: #ffffff;
  font-weight: 600;
  border-left: 3px solid var(--reader-accent);
  padding-left: calc(1.25rem - 3px);
}

.reader-toc-item .toc-page-num {
  font-size: 0.75rem;
  color: var(--reader-text-muted);
  background-color: var(--reader-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  border: 1px solid var(--reader-border);
  flex-shrink: 0;
}

.reader-toc-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--reader-border);
  background-color: rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.reader-toc-footer p {
  font-size: 0.8rem;
  color: var(--reader-text-muted);
  line-height: 1.4;
}

.reader-toc-footer a {
  color: var(--reader-accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.825rem;
}

.reader-toc-footer a:hover {
  text-decoration: underline;
}

/* ---------------- Main Viewport & Canvas Layout ---------------- */
.reader-viewport {
  position: absolute;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  right: 0;
  overflow-y: auto;
  overflow-x: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--reader-bg);
  padding: 1.5rem 1rem 4rem;
  -webkit-overflow-scrolling: touch;
}

.reader-viewport::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.reader-viewport::-webkit-scrollbar-track {
  background-color: var(--reader-bg);
}

.reader-viewport::-webkit-scrollbar-thumb {
  background-color: var(--reader-border);
  border-radius: 5px;
}

.reader-viewport::-webkit-scrollbar-thumb:hover {
  background-color: #554b3f;
}

/* Pages Container */
.reader-pages-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
  max-width: 100%;
}

/* Single Page Container */
.reader-page-card {
  position: relative;
  background-color: var(--reader-white);
  box-shadow: var(--reader-shadow);
  border-radius: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
  overflow: hidden;
}

.reader-page-card canvas {
  display: block;
  width: 100%;
  height: 100%;
  background-color: #ffffff;
}

/* Placeholder skeleton before canvas renders */
.reader-page-card.loading {
  background: linear-gradient(135deg, #27231e 25%, #302b25 50%, #27231e 75%);
  background-size: 200% 200%;
  animation: readerSkeleton 1.8s ease infinite;
}

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

.reader-page-badge {
  position: absolute;
  bottom: 0.75rem;
  right: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(36, 30, 16, 0.4);
  pointer-events: none;
  user-select: none;
}

/* ---------------- Single Page Mode ---------------- */
.reader-viewport.mode-single .reader-pages-container {
  flex: 1 1 auto;
  justify-content: center;
  align-items: center;
  padding-block: 0.5rem;
}

.reader-viewport.mode-single .reader-page-card:not(.active-single) {
  display: none !important;
}

.reader-viewport.mode-single .reader-page-card.active-single {
  display: flex !important;
}

/* Single Page Prev/Next Floating Side Triggers */
.reader-nav-float {
  display: none;
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 3rem;
  height: 4rem;
  background-color: rgba(42, 37, 32, 0.75);
  border: 1px solid var(--reader-border);
  color: #ffffff;
  border-radius: 0.375rem;
  cursor: pointer;
  z-index: 900;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}

.reader-nav-float:hover {
  background-color: var(--reader-accent);
}

.reader-nav-float svg {
  width: 1.5rem;
  height: 1.5rem;
  fill: currentColor;
}

.reader-nav-float.prev { left: 0.75rem; }
.reader-nav-float.next { right: 0.75rem; }

.reader-viewport.mode-single ~ .reader-nav-float {
  display: flex;
}

/* ---------------- End of Book Closing Card ---------------- */
.reader-closing-card {
  width: 100%;
  max-width: 48rem;
  margin-top: 2rem;
  margin-bottom: 2rem;
  background-color: var(--reader-surface);
  border: 1px solid var(--reader-border);
  border-radius: 0.75rem;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--reader-shadow);
}

.reader-closing-card .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--reader-accent);
  margin-bottom: 0.75rem;
}

.reader-closing-card h2 {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  color: var(--reader-text);
  margin-bottom: 1rem;
}

.reader-closing-card .closing-quote {
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.6;
  color: #e5ded3;
  margin: 1.25rem auto 1.75rem;
  max-width: 38rem;
  border-left: 3px solid var(--reader-accent);
  padding-left: 1.25rem;
  text-align: left;
}

.reader-closing-card p {
  color: var(--reader-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 38rem;
  margin-inline: auto;
}

.reader-closing-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.75rem;
}

.reader-closing-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 62.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.reader-closing-actions .btn-primary {
  background-color: var(--reader-accent);
  color: #ffffff;
}

.reader-closing-actions .btn-primary:hover {
  background-color: var(--reader-accent-hover);
}

.reader-closing-actions .btn-outline {
  background: transparent;
  color: var(--reader-text);
  border: 1px solid var(--reader-border);
}

.reader-closing-actions .btn-outline:hover {
  border-color: var(--reader-accent);
  color: #ffffff;
}

/* ---------------- Resume Prompt Toast ---------------- */
.reader-resume-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background-color: var(--reader-surface);
  border: 1px solid var(--reader-accent);
  border-radius: 0.5rem;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  z-index: 1200;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 90vw;
}

.reader-resume-toast.show {
  transform: translateX(-50%) translateY(0);
}

.reader-resume-toast p {
  font-size: 0.9rem;
  color: var(--reader-text);
  margin: 0;
}

.reader-resume-toast .btn-resume {
  background-color: var(--reader-accent);
  color: #ffffff;
  border: 0;
  padding: 0.4rem 0.8rem;
  border-radius: 0.25rem;
  font-weight: 600;
  font-size: 0.825rem;
  cursor: pointer;
}

.reader-resume-toast .btn-dismiss {
  background: none;
  border: 0;
  color: var(--reader-text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

/* ---------------- Loading Spinner Overlay ---------------- */
.reader-loading-overlay {
  position: absolute;
  inset: 0;
  background-color: var(--reader-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  z-index: 950;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.reader-loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.reader-spinner {
  width: 2.75rem;
  height: 2.75rem;
  border: 3px solid var(--reader-border);
  border-top-color: var(--reader-accent);
  border-radius: 50%;
  animation: readerSpin 0.8s linear infinite;
}

@keyframes readerSpin {
  to { transform: rotate(360deg); }
}

.reader-loading-text {
  font-size: 0.95rem;
  color: var(--reader-text-muted);
}

/* ---------------- Mobile Bottom Bar ---------------- */
.reader-mobile-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3.5rem;
  background-color: var(--reader-surface);
  border-top: 1px solid var(--reader-border);
  z-index: 1000;
  align-items: center;
  justify-content: space-around;
  padding: 0 0.5rem;
}

/* ---------------- Responsive Styles ---------------- */
@media (max-width: 64rem) {
  .reader-book-author { display: none; }
  .reader-zoom-group { display: none; }
  .reader-cta-btn { display: none; }
}

@media (max-width: 48rem) {
  :root {
    --header-height: 3.25rem;
  }

  .reader-book-info { display: none; }
  .reader-download-btn .btn-text { display: none; }
  .reader-btn .mode-text { display: none; }
  .reader-btn span { display: none; }

  .reader-mobile-bar {
    display: flex;
  }

  .reader-viewport {
    bottom: 3.5rem;
    padding: 1rem 0.5rem 2rem;
  }

  .reader-header-center {
    display: none;
  }

  .reader-nav-float {
    display: none !important;
  }
}