/* ============================================
   Leap Systems Documentation - Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #324E60;
  --color-secondary: #42677E;
  --color-accent: #52C6D6;
  --color-danger: #FA5959;
  --color-success: #45DA78;
  --color-bg: #EEEFF2;
  --color-white: #FFFFFF;
  --color-text: #3a3a3a;
  --color-text-light: #6b7280;
  --sidebar-width: 280px;
  --transition: 0.25s ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Roboto', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* --- Sidebar --- */
#sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-primary);
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition);
}

#sidebar::-webkit-scrollbar {
  width: 4px;
}

#sidebar::-webkit-scrollbar-thumb {
  background: var(--color-secondary);
  border-radius: 2px;
}

.sidebar-header {
  display: block;
  padding: 28px 24px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  text-decoration: none;
  cursor: pointer;
}

.sidebar-header img {
  width: 120px;
  margin-bottom: 6px;
}

.sidebar-header h2 {
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 2px;
}

#sidebar-nav {
  padding: 12px 0;
  flex: 1;
}

/* Module headings */
.nav-module {
  padding: 16px 24px 6px;
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* Sub-module toggle */
.nav-submodule {
  display: flex;
  align-items: center;
  padding: 8px 24px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-submodule:hover {
  background: rgba(255, 255, 255, 0.05);
}

.nav-submodule img {
  width: 18px;
  height: 18px;
  margin-right: 10px;
  object-fit: contain;
}

.nav-submodule .chevron {
  margin-left: auto;
  font-size: 10px;
  transition: transform var(--transition);
  color: rgba(255, 255, 255, 0.4);
}

.nav-submodule.open .chevron {
  transform: rotate(90deg);
}

/* Section links container */
.nav-sections {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.nav-sections.open {
  max-height: 500px;
}

/* Section link */
.nav-link {
  display: flex;
  align-items: center;
  padding: 7px 24px 7px 52px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 13px;
  font-weight: 400;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
}

.nav-link:hover {
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--color-white);
  background: rgba(82, 198, 214, 0.1);
  border-left-color: var(--color-accent);
}

/* Direct section links (no sub-module, e.g. Getting Started) */
.nav-link-direct {
  padding-left: 24px;
}

.nav-link-direct img {
  width: 16px;
  height: 16px;
  margin-right: 10px;
  object-fit: contain;
}

/* Coming soon badge */
.coming-soon {
  padding: 6px 24px 6px 52px;
  color: rgba(255, 255, 255, 0.3);
  font-size: 12px;
  font-style: italic;
}

/* --- Hamburger Menu Toggle --- */
#menu-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 8px;
  width: 42px;
  height: 42px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: background var(--transition);
}

#menu-toggle:hover {
  background: var(--color-secondary);
}

/* --- Main Content --- */
#content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding: 28px 60px;
}

.content-inner {
  max-width: 900px;
  margin: 0 auto;
}

/* Section header */
.section-header {
  margin-bottom: 32px;
}

.section-breadcrumb {
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.section-title {
  color: var(--color-primary);
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 8px;
}

.section-description {
  color: var(--color-text-light);
  font-size: 15px;
  line-height: 1.7;
}

/* Video container */
.video-container {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(50, 78, 96, 0.15);
  background: #000;
  margin-bottom: 36px;
}

.video-container video {
  width: 100%;
  display: block;
}

/* Steps walkthrough */
.steps-section {
  margin-bottom: 40px;
}

.steps-title {
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.steps-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--color-accent);
  border-radius: 2px;
}

.step-list {
  list-style: none;
  counter-reset: step-counter;
}

.step-item {
  counter-increment: step-counter;
  display: flex;
  align-items: flex-start;
  padding: 14px 18px;
  margin-bottom: 8px;
  background: var(--color-white);
  border-radius: 8px;
  border: 1px solid rgba(50, 78, 96, 0.08);
  transition: box-shadow var(--transition);
}

.step-item:hover {
  box-shadow: 0 2px 8px rgba(50, 78, 96, 0.08);
}

.step-item::before {
  content: counter(step-counter);
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(82, 198, 214, 0.12);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 14px;
  margin-top: 1px;
}

.step-text {
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
  padding-top: 3px;
}

/* Previous / Next navigation */
.prev-next-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid rgba(50, 78, 96, 0.1);
}

.prev-next-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid rgba(82, 198, 214, 0.3);
  border-radius: 8px;
  background: var(--color-white);
  color: var(--color-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
}

.prev-next-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(82, 198, 214, 0.15);
}

.prev-next-btn.hidden {
  visibility: hidden;
}

.prev-next-btn .arrow {
  font-size: 16px;
}

/* --- Welcome / Landing state --- */
.welcome-section {
  text-align: center;
  padding: 10px 20px 40px;
}

.welcome-logo-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
}

.welcome-logo-tile img {
  width: 120px;
  object-fit: contain;
}

.welcome-title {
  color: var(--color-primary);
  font-size: 32px;
  font-weight: 500;
  margin-bottom: 12px;
}

.welcome-subtitle {
  color: var(--color-text-light);
  font-size: 16px;
  max-width: 500px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.module-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  max-width: 700px;
  margin: 0 auto;
}

.module-card {
  background: var(--color-white);
  border-radius: 10px;
  padding: 24px 16px;
  text-align: center;
  border: 1px solid rgba(50, 78, 96, 0.08);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
}

.module-card:hover {
  box-shadow: 0 4px 16px rgba(50, 78, 96, 0.12);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.module-card img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  margin-bottom: 12px;
}

.module-card h3 {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 500;
}

.module-card p {
  color: var(--color-text-light);
  font-size: 12px;
  margin-top: 4px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  #sidebar {
    transform: translateX(-100%);
  }

  body.sidebar-open #sidebar {
    transform: translateX(0);
  }

  body.sidebar-open .sidebar-overlay {
    display: block;
  }

  #menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #content {
    margin-left: 0;
    padding: 72px 20px 40px;
  }

  .section-title {
    font-size: 22px;
  }

  .prev-next-nav {
    flex-direction: column;
    gap: 12px;
  }

  .prev-next-btn.hidden {
    display: none;
  }

  .module-cards {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .module-cards {
    grid-template-columns: 1fr;
  }
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 50;
}