/* ==========================================================================
   BRAIN FRIED — ADHD READER & FOCUS ENGINE STYLING
   Light & Airy Theme Integration, Bionic Reading, Focus Ruler
   ========================================================================== */

/* Reading Progress Bar (Top of Screen) */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), var(--accent-cyan));
  z-index: 1000;
  width: 0%;
  transition: width 0.1s ease;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
}

/* Reader Container */
.reader-layout {
  display: grid;
  grid-template-columns: 1fr minmax(auto, var(--reader-max-width)) 280px;
  gap: 3rem;
  padding: 3rem 1.5rem 5rem;
  margin: 0 auto;
  max-width: var(--content-max-width);
}

.reader-main-column {
  grid-column: 2;
  min-width: 0;
}

.reader-sidebar {
  grid-column: 3;
}

@media (max-width: 1024px) {
  .reader-layout {
    grid-template-columns: 1fr;
    padding: 2rem 1.25rem 4rem;
  }
  .reader-main-column {
    grid-column: 1;
  }
  .reader-sidebar {
    display: none;
  }
}

/* Floating ADHD Focus Engine Toolbar */
.focus-engine-bar {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
  z-index: 90;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-md);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.focus-tool-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.focus-tool-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: inherit;
}

.focus-tool-btn:hover {
  background: #ffffff;
  color: var(--text-primary);
  border-color: var(--border-active);
}

.focus-tool-btn.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.12));
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

/* Focus Reading Ruler */
.reading-ruler {
  position: fixed;
  left: 0;
  width: 100vw;
  height: 38px;
  background: rgba(99, 102, 241, 0.08);
  border-top: 1.5px solid rgba(99, 102, 241, 0.35);
  border-bottom: 1.5px solid rgba(99, 102, 241, 0.35);
  pointer-events: none;
  z-index: 9999;
  display: none;
  transition: top 0.04s ease-out;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.08);
}

body.ruler-active .reading-ruler {
  display: block;
}

/* Bionic Reading Formatting */
.bionic-reading .bionic-bold {
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.bionic-reading p, .bionic-reading li {
  letter-spacing: 0.01em;
}

/* Article Header */
.article-header {
  margin-bottom: 2.5rem;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.article-category-badge {
  background: rgba(2, 132, 199, 0.1);
  border: 1px solid rgba(2, 132, 199, 0.25);
  color: var(--accent-cyan);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-effort-badge {
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--accent-primary);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
}

.article-title {
  font-size: clamp(2rem, 4.5vw, 2.85rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.article-subtitle {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Dopamine Sparknotes (TL;DR Box) */
.dopamine-sparknotes-card {
  background: linear-gradient(135deg, #eef2ff, #e0e7ff);
  border: 1.5px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin-bottom: 3rem;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.08);
  position: relative;
  overflow: hidden;
}

.sparknotes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.sparknotes-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #4338ca;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sparknotes-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(99, 102, 241, 0.2);
  color: #3730a3;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
}

.sparknotes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.sparknotes-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.95rem;
  color: #312e81;
  line-height: 1.5;
}

.sparknotes-list li span.bullet-icon {
  color: var(--accent-primary);
  font-size: 1rem;
  line-height: 1.2;
}

/* Article Body Content */
.article-body {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 2.75rem 0 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.article-body h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2rem 0 0.85rem;
  color: var(--accent-cyan);
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-body blockquote {
  border-left: 4px solid var(--accent-primary);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.07), rgba(139, 92, 246, 0.05));
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-primary);
}

/* Actionable Hack Card inside Article */
.adhd-hack-box {
  background: #f0fdf4;
  border: 1px solid rgba(5, 150, 105, 0.3);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2.25rem 0;
  box-shadow: 0 4px 15px rgba(5, 150, 105, 0.05);
}

.adhd-hack-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #047857;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

/* Interactive Dopamine Checkpoint inside Article */
.dopamine-checkpoint-card {
  background: var(--bg-card);
  border: 1.5px dashed var(--border-active);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin: 2.5rem 0;
  box-shadow: var(--shadow-sm);
}

.dopamine-checkpoint-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.dopamine-checkpoint-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkpoint-task-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.checkpoint-task-item:hover {
  background: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
}

.checkpoint-task-item.completed {
  background: #ecfdf5;
  border-color: rgba(16, 185, 129, 0.4);
}

.checkpoint-task-item.completed span.task-text {
  text-decoration: line-through;
  color: var(--text-muted);
}

.checkpoint-checkbox {
  width: 20px;
  height: 20px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

/* Sidebar Table of Contents */
.toc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
  box-shadow: var(--shadow-sm);
}

.toc-title {
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-primary);
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.toc-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  line-height: 1.4;
  transition: all var(--transition-fast);
  display: block;
  padding-left: 0.5rem;
  border-left: 2px solid transparent;
}

.toc-link:hover, .toc-link.active {
  color: var(--accent-primary);
  border-left-color: var(--accent-primary);
  transform: translateX(3px);
}