/*
 * IAM-COR LMS — Portal & Study Styles
 * Study-optimized for long reading sessions.
 */

/* ============================================================
   PORTAL SHELL
   ============================================================ */
.portal-shell {
  display: flex;
  min-height: calc(100vh - 64px);
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.portal-sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--navy-mid);
  display: flex;
  flex-direction: column;
  padding: 0;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
}

.portal-sidebar__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.portal-sidebar__nav {
  flex: 1;
  padding: 0.75rem 0;
  display: flex;
  flex-direction: column;
}

.portal-nav-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.portal-nav-item:hover {
  background: rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.85);
}
.portal-nav-item--active {
  background: rgba(201,169,97,0.15);
  color: var(--gold) !important;
  font-weight: 600;
}

.portal-nav-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  flex-shrink: 0;
}
.portal-nav-dot--active {
  background: var(--gold);
}

.portal-sidebar__user {
  padding: 1rem 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.07);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.portal-user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(201,169,97,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gold);
  flex-shrink: 0;
}
.portal-user-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
}
.portal-user-prog {
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.35);
  margin-top: 2px;
}

/* ============================================================
   MAIN AREA
   ============================================================ */
.portal-main {
  flex: 1;
  background: var(--cream-mid);
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.portal-topbar {
  background: #fff;
  border-bottom: 0.5px solid var(--cream-border);
  padding: 0.875rem 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 64px;
  z-index: 100;
}
.portal-topbar__title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--navy-mid);
  font-family: var(--font-body);
}
.portal-topbar__right {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.portal-logout-link {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.portal-logout-link:hover { color: var(--navy-mid); }

.portal-content {
  flex: 1;
  padding: 1.5rem 1.75rem;
  max-width: 1000px;
}

/* ============================================================
   STAT CARDS
   ============================================================ */
.portal-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.875rem;
  margin-bottom: 1.25rem;
}
.portal-stat-card {
  background: #fff;
  border: 0.5px solid var(--cream-border);
  border-radius: var(--r-md);
  padding: 1rem 1.125rem;
}
.portal-stat-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
}
.portal-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
}

/* ============================================================
   PROGRESS BARS
   ============================================================ */
.portal-progress-track {
  height: 4px;
  background: var(--cream-dark);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 0.625rem;
}
.portal-progress-fill {
  height: 100%;
  background: var(--gold);
  border-radius: 2px;
  transition: width 0.6s ease;
}

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.portal-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

/* ============================================================
   LESSON READER — THE STUDY ENVIRONMENT
   ============================================================ */
.lesson-shell {
  display: flex;
  min-height: calc(100vh - 64px);
}

/* Table of contents panel */
.lesson-toc {
  width: 200px;
  flex-shrink: 0;
  background: #fff;
  border-right: 0.5px solid var(--cream-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
  padding: 1rem 0;
}
.lesson-toc__header {
  padding: 0 1rem 0.75rem;
  border-bottom: 0.5px solid var(--cream-border);
  margin-bottom: 0.5rem;
}
.lesson-toc__course {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.lesson-toc__module {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy-mid);
  margin-top: 0.2rem;
}

.lesson-toc-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 0.5px solid var(--cream-border);
  transition: background 0.15s;
}
.lesson-toc-item:hover { background: var(--cream-mid); }
.lesson-toc-item--active {
  background: #eef2f9;
  color: var(--navy-mid);
  font-weight: 600;
  border-left: 3px solid var(--navy-mid);
}
.lesson-toc-item--done { color: var(--gold); }
.lesson-toc-check { font-size: 0.75rem; }

/* Reading pane */
.lesson-reader {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--study-bg);
  min-width: 0;
}

/* Lesson topbar */
.lesson-topbar {
  background: #fff;
  border-bottom: 0.5px solid var(--cream-border);
  padding: 0.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 64px;
  z-index: 10;
}
.lesson-topbar__meta {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.125rem;
}
.lesson-topbar__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--navy-mid);
}
.lesson-topbar__progress {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.lesson-topbar__pct {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Night mode toggle */
.lesson-night-toggle {
  background: transparent;
  border: 0.5px solid var(--cream-border);
  border-radius: 20px;
  padding: 0.3rem 0.875rem;
  font-size: 0.75rem;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.375rem;
  transition: all 0.2s;
}
.lesson-night-toggle:hover { border-color: var(--navy-mid); color: var(--navy-mid); }

/* Main reading body */
.lesson-body {
  flex: 1;
  padding: 2.5rem 3.5rem;
  max-width: 780px;
  line-height: var(--study-line);
  font-size: var(--study-size);
  color: var(--study-text);
}

.lesson-body h1,
.lesson-body h2,
.lesson-body h3 {
  color: var(--navy-mid);
  margin-bottom: 1rem;
  margin-top: 2rem;
}
.lesson-body h1 { font-size: 1.625rem; margin-top: 0; }
.lesson-body h2 { font-size: 1.25rem; }
.lesson-body h3 { font-size: 1.0625rem; }

.lesson-body p {
  margin-bottom: 1.25rem;
  line-height: 1.85;
}

/* Key principle callout */
.lesson-callout {
  border-left: 3px solid var(--gold);
  background: #fff;
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: 1.125rem 1.5rem;
  margin: 1.75rem 0;
}
.lesson-callout__label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.lesson-callout p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.75;
}

/* Quote styling */
.lesson-body blockquote {
  border-left: 2px solid var(--gold);
  margin: 1.5rem 0;
  padding: 0.75rem 0 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--navy-mid);
  font-style: italic;
}

/* Lesson bottom nav */
.lesson-nav-bar {
  background: #fff;
  border-top: 0.5px solid var(--cream-border);
  padding: 0.875rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  bottom: 0;
}

.lesson-complete-btn {
  background: var(--gold);
  color: var(--navy);
  font-weight: 700;
  border: none;
  padding: 0.625rem 1.5rem;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-size: 0.875rem;
  transition: background 0.2s;
}
.lesson-complete-btn:hover { background: var(--gold-light); }
.lesson-complete-btn:disabled { opacity: 0.5; cursor: default; }

/* ============================================================
   NIGHT STUDY MODE
   ============================================================ */
body.night-mode .lesson-reader {
  background: var(--night-bg);
}
body.night-mode .lesson-topbar {
  background: var(--night-surface);
  border-color: rgba(255,255,255,0.07);
}
body.night-mode .lesson-topbar__title { color: var(--night-text); }
body.night-mode .lesson-body {
  color: var(--night-text);
}
body.night-mode .lesson-body h1,
body.night-mode .lesson-body h2,
body.night-mode .lesson-body h3 {
  color: #a8bfe0;
}
body.night-mode .lesson-callout {
  background: var(--night-surface);
}
body.night-mode .lesson-callout p { color: var(--night-muted); }
body.night-mode .lesson-nav-bar {
  background: var(--night-surface);
  border-color: rgba(255,255,255,0.07);
}
body.night-mode .portal-sidebar { background: #111522; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .portal-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .lesson-body { padding: 2rem 2rem; }
}

@media (max-width: 768px) {
  .portal-sidebar { display: none; }
  .portal-two-col { grid-template-columns: 1fr; }
  .lesson-toc { display: none; }
  .lesson-body { padding: 1.5rem 1.25rem; }
}