/* ============================================
   BIGBEN ACADEMY - APP SHELL STYLES
   Layout: Left sidebar + Content + Right aside
   Adapted from Zvonalitik Academy
   ============================================ */

/* === CSS Custom Properties === */
:root {
  --sidebar-width: 260px;
  --aside-width: 240px;
  --bottom-nav-height: 60px;
  --content-max-width: 800px;
  --nav-height: 64px;
  --border: #e5e7eb;
  --bg-alt: #f8f9fa;
  --text-primary: #1a1a2e;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --success: #22c55e;
  --success-light: #f0fdf4;
  --error: #ef4444;
  --error-light: #fef2f2;
  --anim-fast: 0.15s;
  --anim-normal: 0.3s;
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --z-sidebar: 100;
  --z-overlay: 90;
  --z-bottom-nav: 100;
  --z-aside: 10;
}

/* ============================================
   NAVIGATION OVERRIDES FOR ACADEMY
   ============================================ */

.lesson-page .nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: white;
  border-bottom: 1px solid var(--border);
  box-shadow: none;
}

.lesson-page .nav__container {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--nav-height);
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.lesson-page .nav__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.lesson-page .nav__links {
  display: flex;
  gap: 24px;
  margin-left: auto;
}

.lesson-page .nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--anim-fast);
}

.lesson-page .nav__links a:hover,
.lesson-page .nav__links .nav__link--active {
  color: var(--primary);
}

.lesson-page .nav__actions {
  margin-left: 16px;
}

.lesson-page .nav__mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
}

.lesson-page .nav__mobile-toggle i {
  width: 24px;
  height: 24px;
}

/* ============================================
   APP SHELL - THREE COLUMN LAYOUT
   ============================================ */

.app-shell__container {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
  overflow-x: hidden;
  max-width: 100vw;
  padding-top: var(--nav-height);
}

/* ============================================
   LEFT SIDEBAR - Lesson Navigation
   ============================================ */

.app-sidebar {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  z-index: var(--z-sidebar);
  display: flex;
  flex-direction: column;
  background: white;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  transition: transform var(--anim-normal) var(--ease-smooth);
}

.app-sidebar__header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}

.app-sidebar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-body);
}

.app-sidebar__logo i { width: 20px; height: 20px; color: var(--primary); }
.app-sidebar__logo:hover { color: var(--primary); }

.app-sidebar__nav {
  flex: 1;
  padding: 8px;
  overflow-y: auto;
}

.app-sidebar__module { margin-bottom: 4px; }

.app-sidebar__module-header {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  transition: all var(--anim-fast);
}

.app-sidebar__module-header:hover { background: var(--bg-alt); }
.app-sidebar__module--expanded .app-sidebar__module-header { background: rgba(237, 83, 138, 0.08); }

.app-sidebar__module-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px; height: 16px;
  color: var(--text-muted);
}

.app-sidebar__module-icon i { width: 14px; height: 14px; }
.app-sidebar__module--expanded .app-sidebar__module-icon { color: var(--primary); }

.app-sidebar__module-title { flex: 1; font-size: 13px; font-weight: 600; color: var(--text-primary); }
.app-sidebar__module--expanded .app-sidebar__module-title { color: var(--primary); }

.app-sidebar__module-count {
  font-size: 11px; font-weight: 600; color: var(--text-muted);
  background: var(--bg-alt); padding: 2px 6px; border-radius: 10px;
}
.app-sidebar__module--expanded .app-sidebar__module-count { background: white; color: var(--primary); }

.app-sidebar__lessons { display: none; padding: 4px 0 8px 0; }
.app-sidebar__module--expanded .app-sidebar__lessons { display: block; }

.app-sidebar__item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px 8px 24px; margin-bottom: 1px;
  border-radius: 8px; text-decoration: none;
  color: var(--text-secondary); font-size: 13px;
  font-family: var(--font-body);
  transition: all var(--anim-fast);
}

.app-sidebar__item:hover { background: var(--bg-alt); color: var(--text-primary); }
.app-sidebar__item--current { background: var(--primary); color: white; }
.app-sidebar__item--current:hover { background: var(--primary); color: white; }
.app-sidebar__item--draft { opacity: 0.5; cursor: default; }
.app-sidebar__item--draft:hover { background: none; color: var(--text-secondary); }

.app-sidebar__lesson-number { font-size: 11px; font-weight: 600; color: var(--text-muted); min-width: 30px; }
.app-sidebar__item--current .app-sidebar__lesson-number { color: rgba(255,255,255,0.7); }

.app-sidebar__title { flex: 1; line-height: 1.3; }

/* ============================================
   MAIN CONTENT AREA
   ============================================ */

.app-main {
  grid-column: 2;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ============================================
   LESSON HEADER
   ============================================ */

.lesson-header {
  padding: 40px 0 32px;
  background: linear-gradient(135deg, #fff5f8 0%, #fef6f9 100%);
  border-bottom: 1px solid var(--border);
}

.lesson-header__layout {
  display: flex;
  align-items: center;
  gap: 40px;
}

.lesson-header__text { flex: 1; }

.lesson-header__breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.lesson-header__breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--anim-fast);
}

.lesson-header__breadcrumbs a:hover { color: var(--primary); }
.lesson-header__breadcrumbs span { color: var(--text-muted); }
.lesson-header__breadcrumbs strong { color: var(--text-primary); font-weight: 600; }

.lesson-header__number {
  display: inline-block;
  font-size: 12px; font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.lesson-header__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.lesson-header__meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.lesson-header__meta span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
}

.lesson-header__meta i { width: 16px; height: 16px; }

.lesson-header__hero {
  width: 200px;
  flex-shrink: 0;
}

.lesson-header__hero svg { width: 100%; height: auto; }

/* Lesson content area */
.lesson-content {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 32px 24px;
  overflow-x: clip;
}

.lesson-content article {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
}

/* Article tables */
.lesson-content .article-table {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 32px 0;
  max-width: 100%;
}

.lesson-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.lesson-content .article-table table {
  margin: 0;
}

.lesson-content thead {
  background: var(--secondary, #2d3142);
  color: white;
}

.lesson-content th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}

.lesson-content td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.lesson-content tbody tr:hover td {
  background: rgba(237, 83, 138, 0.04);
}

.lesson-content tbody tr:last-child td {
  border-bottom: none;
}

/* Article typography enhancements */
.lesson-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  color: var(--text-primary);
  margin: 48px 0 16px;
  line-height: 1.3;
}

.lesson-content h2:first-child {
  margin-top: 0;
}

.lesson-content p {
  margin-bottom: 16px;
  font-size: 16px;
  color: var(--text-primary);
}

.lesson-content ul, .lesson-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.lesson-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

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

/* ============================================
   RIGHT ASIDE - TOC
   ============================================ */

.app-aside {
  position: fixed;
  top: 100px;
  right: 24px;
  width: var(--aside-width);
  z-index: var(--z-aside);
  overflow-y: auto;
  max-height: calc(100vh - 120px);
}

.app-aside__section { margin-bottom: 20px; }

.app-aside__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px; font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.app-aside__title i { width: 14px; height: 14px; }

.app-aside__toc { position: sticky; top: 24px; }
.app-aside__toc-list { list-style: none; padding: 0; margin: 0; }
.app-aside__toc-item { margin-bottom: 8px; }

.app-aside__toc-link {
  display: block; padding: 6px 12px;
  font-size: 13px; color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid var(--border);
  transition: all var(--anim-fast);
  line-height: 1.4;
}

.app-aside__toc-link:hover { color: var(--text-primary); border-left-color: var(--text-muted); }
.app-aside__toc-link--active { color: var(--primary); border-left-color: var(--primary); font-weight: 500; }

/* ============================================
   MOBILE BOTTOM NAVIGATION
   ============================================ */

.app-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--bottom-nav-height);
  background: white;
  border-top: 1px solid var(--border);
  z-index: var(--z-bottom-nav);
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.app-bottom-nav__item {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 4px;
  padding: 8px; text-decoration: none;
  color: var(--text-muted); font-size: 11px; font-weight: 500;
  background: none; border: none; cursor: pointer;
  font-family: var(--font-body);
}

.app-bottom-nav__item:hover { color: var(--primary); }
.app-bottom-nav__item i { width: 22px; height: 22px; }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (min-width: 1280px) {
  .app-main { padding-right: calc(var(--aside-width) + 48px); }
  .app-aside { display: block; }
}

@media (max-width: 1279px) {
  .app-aside { display: none; }
}

@media (max-width: 1023px) {
  .app-shell__container { grid-template-columns: 1fr; }
  .app-sidebar { transform: translateX(-100%); }
  .app-main { grid-column: 1; }
  .app-shell--sidebar-open .app-sidebar { transform: translateX(0); }
  .lesson-page .nav__links { display: none; }
  .lesson-page .nav__mobile-toggle { display: block; }
}

@media (max-width: 767px) {
  :root { --bottom-nav-height: 56px; }
  .app-bottom-nav { display: flex; }
  .app-main { padding-bottom: var(--bottom-nav-height); }
  .app-sidebar { width: 280px; }
  .lesson-header { padding: 24px 0 20px; }
  .lesson-header__layout { flex-direction: column; gap: 20px; }
  .lesson-header__hero { width: 120px; }
  .lesson-content { padding: 24px 16px; }
}

body.app-shell--sidebar-open { overflow: hidden; }

/* ============================================
   LESSON INLINE CARDS
   Inline-карточки в потоке текста урока для перелинковки
   с экосистемой контента: документы, шпаргалки, инструменты,
   кейсы, интервью, статьи блога.

   Цвета по типу — единый визуальный язык во всех уроках.
   ============================================ */

.lesson-inline-card {
  --card-accent: #6b7280;
  --card-bg: #f9fafb;
  --card-border: #e5e7eb;

  display: flex;
  align-items: stretch;
  gap: 16px;
  padding: 18px 20px;
  margin: 28px 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-left: 4px solid var(--card-accent);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  transition: all 0.18s ease;
  position: relative;
}

.lesson-inline-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
  border-color: var(--card-accent);
}

.lesson-inline-card__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--card-accent);
  overflow: hidden;
}

.lesson-inline-card__icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}

.lesson-inline-card__icon i,
.lesson-inline-card__icon svg {
  width: 22px;
  height: 22px;
}

.lesson-inline-card__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lesson-inline-card__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--card-accent);
}

.lesson-inline-card__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-primary);
}

.lesson-inline-card__excerpt {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-top: 2px;
}

.lesson-inline-card__meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 500;
}

.lesson-inline-card__arrow {
  flex-shrink: 0;
  align-self: center;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--card-accent);
  opacity: 0.5;
  transition: all 0.18s ease;
}

.lesson-inline-card:hover .lesson-inline-card__arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* === Цвета по типам === */
.lesson-inline-card--doc       { --card-accent: #2563eb; --card-bg: #eff6ff; --card-border: #dbeafe; }
.lesson-inline-card--sheet     { --card-accent: #d97706; --card-bg: #fffbeb; --card-border: #fef3c7; }
.lesson-inline-card--tool      { --card-accent: #7c3aed; --card-bg: #f5f3ff; --card-border: #ede9fe; }
.lesson-inline-card--guide     { --card-accent: #4f46e5; --card-bg: #eef2ff; --card-border: #e0e7ff; }
.lesson-inline-card--case      { --card-accent: #059669; --card-bg: #ecfdf5; --card-border: #d1fae5; }
.lesson-inline-card--edugrowth { --card-accent: #db2777; --card-bg: #fdf2f8; --card-border: #fce7f3; }
.lesson-inline-card--blog      { --card-accent: #0891b2; --card-bg: #ecfeff; --card-border: #cffafe; }

/* Mobile */
@media (max-width: 640px) {
  .lesson-inline-card { padding: 14px 16px; gap: 12px; margin: 22px 0; }
  .lesson-inline-card__icon { width: 40px; height: 40px; }
  .lesson-inline-card__title { font-size: 15px; }
  .lesson-inline-card__excerpt { font-size: 13px; }
  .lesson-inline-card__arrow { display: none; }
}

/* ============================================
   LESSON TAKEAWAY (Забери с собой)
   Большой блок в конце урока со всеми материалами
   ============================================ */

.lesson-takeaway {
  margin: 48px 0 32px;
  padding: 32px;
  background: linear-gradient(135deg, #fafbff 0%, #f5f7ff 100%);
  border: 1px solid #e0e7ff;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
}

.lesson-takeaway::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #d97706, #7c3aed, #059669, #db2777, #0891b2);
}

.lesson-takeaway__header {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px dashed #c7d2fe;
}

.lesson-takeaway__icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 1px solid #c7d2fe;
  border-radius: 14px;
  color: #4f46e5;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.08);
}

.lesson-takeaway__icon i,
.lesson-takeaway__icon svg {
  width: 28px;
  height: 28px;
}

.lesson-takeaway__title {
  font-family: var(--font-display, inherit);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px;
}

.lesson-takeaway__subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.lesson-takeaway__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.lesson-takeaway__section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e0e7ff;
}

.lesson-takeaway__section-title i,
.lesson-takeaway__section-title svg {
  width: 16px;
  height: 16px;
}

.lesson-takeaway__count {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  background: white;
  border: 1px solid #e0e7ff;
  border-radius: 11px;
  font-size: 11px;
  font-weight: 700;
  color: #4f46e5;
  text-transform: none;
  letter-spacing: 0;
}

.lesson-takeaway__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.lesson-takeaway__list li a {
  display: block;
  padding: 10px 12px;
  background: white;
  border: 1px solid transparent;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.15s ease;
}

.lesson-takeaway__list li a:hover {
  border-color: #c7d2fe;
  transform: translateX(3px);
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.06);
}

.lesson-takeaway__item-title {
  display: block;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-primary);
}

.lesson-takeaway__item-meta {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Цветовая идентификация секций такая же как у inline-cards */
.lesson-takeaway__section--doc       .lesson-takeaway__section-title i { color: #2563eb; }
.lesson-takeaway__section--sheet     .lesson-takeaway__section-title i { color: #d97706; }
.lesson-takeaway__section--tool      .lesson-takeaway__section-title i { color: #7c3aed; }
.lesson-takeaway__section--guide     .lesson-takeaway__section-title i { color: #4f46e5; }
.lesson-takeaway__section--case      .lesson-takeaway__section-title i { color: #059669; }
.lesson-takeaway__section--edugrowth .lesson-takeaway__section-title i { color: #db2777; }
.lesson-takeaway__section--blog      .lesson-takeaway__section-title i { color: #0891b2; }

@media (max-width: 640px) {
  .lesson-takeaway { padding: 24px 18px; margin: 36px 0 24px; }
  .lesson-takeaway__header { flex-direction: column; gap: 12px; margin-bottom: 22px; padding-bottom: 18px; }
  .lesson-takeaway__icon { width: 48px; height: 48px; }
  .lesson-takeaway__title { font-size: 20px; }
  .lesson-takeaway__grid { grid-template-columns: 1fr; gap: 20px; }
}

/* =========================================
   Academy Gate — CSS-only content paywall
   Content stays in HTML (SEO indexable).
   Visually truncated for non-authenticated users.
   ========================================= */

/* Gated state: disable TOC navigation so users can't scroll past the gate */
.lesson-content--gated ~ .app-aside .app-aside__toc-link {
  pointer-events: none;
  opacity: 0.4;
  cursor: default;
}

/* Gated content: truncate with overflow hidden + gradient fade */
.lesson-content--gated {
  position: relative;
  max-height: 600px;
  overflow: hidden;
}

/* Gradient fade at the bottom of truncated content (pseudo-element) */
.lesson-content--gated::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 100%);
  pointer-events: none;
  z-index: 10;
}

/* Gate CTA block: sits below truncated content */
.academy-gate {
  position: relative;
}

.academy-gate__cta {
  text-align: center;
  padding: 48px 32px 40px;
  background: #fff;
  position: relative;
  z-index: 3;
}

.academy-gate__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f0f4ff, #ede9fe);
  border-radius: 50%;
  margin: 0 auto 20px;
}

.academy-gate__icon i {
  width: 28px;
  height: 28px;
  color: #6366f1;
}

.academy-gate__title {
  font-size: 22px;
  font-weight: 700;
  color: #1a1a2e;
  margin: 0 0 12px;
}

.academy-gate__text {
  font-size: 15px;
  color: #64748b;
  line-height: 1.6;
  max-width: 480px;
  margin: 0 auto 24px;
}

.academy-gate__buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}

.academy-gate__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 160px;
  justify-content: center;
}

.academy-gate__btn i {
  width: 18px;
  height: 18px;
}

/* Inline login form */
.academy-gate__form {
  max-width: 520px;
  margin: 0 auto 20px;
}

.academy-gate__form-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.academy-gate__field {
  flex: 1;
  text-align: left;
}

.academy-gate__label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: #64748b;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.academy-gate__input {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  color: #1a1a2e;
  background: #f8fafc;
  transition: border-color 0.2s;
  box-sizing: border-box;
}

.academy-gate__input:focus {
  outline: none;
  border-color: #6366f1;
  background: #fff;
}

.academy-gate__input::placeholder {
  color: #94a3b8;
}

.academy-gate__submit {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  white-space: nowrap;
}

.academy-gate__submit i {
  width: 18px;
  height: 18px;
}

.academy-gate__submit:disabled {
  opacity: 0.7;
  cursor: wait;
}

.academy-gate__error {
  margin-top: 10px;
  padding: 10px 16px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: #dc2626;
  font-size: 14px;
  text-align: center;
}

.academy-gate__divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 20px auto;
  max-width: 520px;
  color: #94a3b8;
  font-size: 13px;
}

.academy-gate__divider::before,
.academy-gate__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #e2e8f0;
}

.academy-gate__btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.academy-gate__btn-secondary i {
  width: 16px;
  height: 16px;
}

.academy-gate__hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 13px;
  color: #94a3b8;
  margin: 16px 0 0;
}

.academy-gate__hint i {
  width: 14px;
  height: 14px;
}

/* Auth indicator in nav */
.academy-user {
  display: flex;
  align-items: center;
  gap: 8px;
}

.academy-user__name {
  font-size: 13px;
  font-weight: 600;
  color: #1a1a2e;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.academy-user__logout {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  color: #94a3b8;
  transition: color 0.2s, border-color 0.2s;
}

.academy-user__logout:hover {
  color: #dc2626;
  border-color: #dc2626;
}

.academy-user__logout i {
  width: 16px;
  height: 16px;
}

/* Locked lesson-actions: test, takeaway, CTA — hidden behind gate */
.lesson-actions--locked {
  display: none;
}

@media (max-width: 640px) {
  .lesson-content--gated { max-height: 500px; }
  .academy-gate__cta { padding: 32px 20px; }
  .academy-gate__title { font-size: 19px; }
  .academy-gate__form-row { flex-direction: column; }
  .academy-gate__submit { width: 100%; justify-content: center; }
}