/* ============================================================
   SHELLSHOCK — READER PAGE
   ============================================================ */

/* Reader shares base styles from style.css */

/* ============================
   READER HEADER
   ============================ */
.reader-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 60px;
  background: rgba(6, 6, 10, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0;
  z-index: 1000;
  padding: 0;
}

.reader-nav-back {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 1.25rem;
  height: 100%;
  color: var(--text2);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-right: 1px solid var(--border);
  transition: color var(--t), background var(--t);
  white-space: nowrap;
}

.reader-nav-back:hover {
  color: var(--green);
  background: rgba(60,179,113,0.05);
}

.reader-nav-back svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.reader-chapter-select-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 1.25rem;
  height: 100%;
  border-right: 1px solid var(--border);
}

.reader-chapter-label {
  font-size: 0.75rem;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  white-space: nowrap;
}

.reader-chapter-select {
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--font-title);
  font-size: 1.1rem;
  letter-spacing: 1.5px;
  cursor: pointer;
  outline: none;
  padding: 0 0.5rem;
  transition: color var(--t);
}

.reader-chapter-select:hover { color: var(--green); }

.reader-chapter-select option {
  background: #0f0f18;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.reader-page-counter {
  padding: 0 1.25rem;
  font-size: 0.8rem;
  color: var(--text3);
  font-weight: 700;
  letter-spacing: 1px;
  white-space: nowrap;
}

.reader-page-counter span {
  color: var(--green);
}

.reader-nav-spacer { flex: 1; }

.reader-nav-home {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 100%;
  color: var(--text2);
  text-decoration: none;
  border-left: 1px solid var(--border);
  font-size: 1.1rem;
  transition: color var(--t), background var(--t);
}

.reader-nav-home:hover {
  color: var(--green);
  background: rgba(60,179,113,0.05);
}

/* ============================
   PROGRESS BAR
   ============================ */
.reader-progress {
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255,255,255,0.05);
  z-index: 999;
}

.reader-progress-bar {
  height: 100%;
  background: linear-gradient(to right, var(--green-d), var(--green), var(--green-l));
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px var(--green-glow);
}

/* ============================
   CHAPTER TITLE BANNER
   ============================ */
.chapter-banner {
  padding-top: 63px;
  background: var(--bg);
  text-align: center;
  padding-bottom: 2.5rem;
  padding-left: 1rem;
  padding-right: 1rem;
  border-bottom: 1px solid var(--border);
}

.chapter-banner-num {
  font-family: var(--font-title);
  font-size: 0.9rem;
  letter-spacing: 4px;
  color: var(--chapter-color, var(--green));
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 12px currentColor;
}

.chapter-banner-title {
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: 5px;
  color: var(--text);
  text-shadow: 3px 3px 0 #000;
}

.chapter-banner-desc {
  max-width: 560px;
  margin: 0.75rem auto 0;
  font-size: 0.9rem;
  color: var(--text2);
  line-height: 1.7;
}

/* ============================
   COMIC READER CONTAINER
   ============================ */
.reader-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 0 6rem;
  background: var(--bg);
}

.reader-pages {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ============================
   PAGE ELEMENTS
   ============================ */
.page-item {
  position: relative;
  width: 100%;
  background: #000;
  line-height: 0;
}

.page-item img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.page-item img.loaded { opacity: 1; }

.page-item-video {
  position: relative;
  width: 100%;
  background: #000;
}

.page-item-video video {
  width: 100%;
  height: auto;
  display: block;
  max-height: 90vh;
  object-fit: contain;
}

.page-video-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(0,201,167,0.15);
  border: 1px solid var(--teal);
  color: var(--teal);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  pointer-events: none;
}

/* Page number indicator */
.page-number {
  position: absolute;
  bottom: 0.75rem;
  right: 1rem;
  background: rgba(6,6,10,0.7);
  color: var(--text3);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  letter-spacing: 1px;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t);
}

.page-item:hover .page-number { opacity: 1; }

/* Loading placeholder */
.page-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--bg3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text3);
  font-size: 0.8rem;
}

.page-placeholder-spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================
   CHAPTER NAVIGATION (bottom)
   ============================ */
.chapter-nav {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--border);
}

.chapter-nav-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.4rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text2);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--t);
  cursor: pointer;
  flex-shrink: 0;
}

.chapter-nav-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background: rgba(60,179,113,0.05);
  transform: translateY(-2px);
}

.chapter-nav-btn:disabled {
  opacity: 0.35;
  pointer-events: none;
}

.chapter-nav-info {
  text-align: center;
  flex: 1;
}

.chapter-nav-title {
  font-family: var(--font-title);
  font-size: 1.4rem;
  letter-spacing: 2px;
  color: var(--green);
}

.chapter-nav-pages {
  font-size: 0.78rem;
  color: var(--text3);
  margin-top: 0.2rem;
}

/* ============================
   FLOATING BACK TO TOP
   ============================ */
.btn-top {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  width: 46px;
  height: 46px;
  background: var(--green);
  color: #000;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  z-index: 500;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--t), transform var(--t), box-shadow var(--t);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5), 0 0 15px var(--green-glow);
  pointer-events: none;
}

.btn-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.btn-top:hover {
  box-shadow: 0 6px 25px rgba(0,0,0,0.5), 0 0 25px var(--green-glow);
  transform: translateY(-3px);
}

/* ============================
   KEYBOARD HINTS
   ============================ */
.kbd-hint {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(6,6,10,0.9);
  border: 1px solid var(--border);
  color: var(--text3);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  transition: opacity 0.5s, transform 0.5s;
  pointer-events: none;
  backdrop-filter: blur(8px);
  z-index: 400;
  white-space: nowrap;
}

.kbd-hint.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.kbd-hint kbd {
  background: var(--bg3);
  border: 1px solid var(--border2);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--text2);
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 900px) {
  .reader-container { max-width: 100%; }
  .reader-page-counter { display: none; }
}

@media (max-width: 600px) {
  .reader-nav { height: 54px; }
  .reader-progress { top: 54px; }
  .chapter-banner { padding-top: 57px; }

  .reader-nav-back span { display: none; }
  .reader-chapter-label { display: none; }
  .reader-chapter-select { font-size: 1rem; }

  .chapter-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }
  .chapter-nav-btn { justify-content: center; }
  .chapter-nav-info { order: -1; }

  .kbd-hint { display: none; }
}