/* ============================================
   QUICK START — Blueprint Journey
   Brand: Inkwell #1A1718, Copper #D85D23,
          Evergreen #677F71, Ivory #E0D6C7
   ============================================ */

:root {
  --qs-inkwell: #1A1718;
  --qs-copper: #D85D23;
  --qs-copper-dark: #b94d1d;
  --qs-evergreen: #677F71;
  --qs-ivory: #E0D6C7;
  --qs-ivory-light: #F5F0E8;
  --qs-white: #ffffff;
  --qs-gray: #6b6566;
  --qs-border: #d6cfc5;
}

/* Layout */
.qs {
  background-color: var(--qs-white);
}

.qs-container {
  max-width: 740px;
  margin: 0 auto;
  padding: 0 2rem;
}

.qs-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--qs-copper);
  margin-bottom: 0.5rem;
}

/* ============================================
   Hero
   ============================================ */
.qs-hero {
  background-color: var(--qs-inkwell);
  padding: 80px 2rem 60px;
  text-align: center;
}

.qs-hero__inner {
  max-width: 680px;
  margin: 0 auto;
}

.qs-hero__badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--qs-copper);
  border: 1px solid var(--qs-copper);
  padding: 5px 14px;
  margin-bottom: 1.5rem;
}

.qs-hero h1 {
  color: var(--qs-white);
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.qs-hero h1 span {
  color: var(--qs-copper);
}

.qs-hero__sub {
  font-size: 1.0625rem;
  font-weight: 300;
  color: var(--qs-ivory);
  line-height: 1.7;
  max-width: 540px;
  margin: 0 auto;
}

.qs-hero__meta {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid #2e2628;
}

.qs-hero__stat {
  text-align: center;
}

.qs-hero__stat-num {
  display: block;
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--qs-copper);
}

.qs-hero__stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--qs-ivory);
  opacity: 0.7;
}

/* ============================================
   Sticky Lesson Nav
   ============================================ */
.qs-nav {
  background-color: var(--qs-white);
  border-bottom: 1px solid var(--qs-border);
  position: sticky;
  top: 64px;
  z-index: 50;
  padding: 0.75rem 2rem;
}

.qs-nav__inner {
  max-width: 740px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
}

.qs-nav__link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--qs-gray);
  border: 2px solid var(--qs-border);
  transition: all 0.2s ease;
}

.qs-nav__link:hover {
  border-color: var(--qs-copper);
  color: var(--qs-copper);
}

.qs-nav__link--active {
  background-color: var(--qs-copper);
  border-color: var(--qs-copper);
  color: var(--qs-white);
}

/* ============================================
   Overview Video
   ============================================ */
.qs-overview {
  padding: 4rem 2rem 3rem;
  border-bottom: 1px solid var(--qs-border);
}

.qs-overview h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.qs-overview__desc {
  font-size: 0.9375rem;
  color: var(--qs-gray);
  margin-bottom: 2rem;
  max-width: 560px;
}

/* ============================================
   Video Placeholder / Embed
   ============================================ */
.qs-video {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  background-color: var(--qs-inkwell);
  margin-bottom: 2rem;
}

.qs-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.qs-video__placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--qs-ivory);
  gap: 0.5rem;
}

.qs-video__play {
  width: 64px;
  height: 64px;
  background-color: var(--qs-copper);
  color: var(--qs-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  transition: background-color 0.2s ease;
}

.qs-video__placeholder:hover .qs-video__play {
  background-color: var(--qs-copper-dark);
}

.qs-video__placeholder p {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--qs-ivory);
  margin: 0;
}

.qs-video__note {
  font-size: 0.75rem !important;
  color: var(--qs-gray) !important;
  font-weight: 400 !important;
}

/* ============================================
   Lesson Sections
   ============================================ */
.qs-lesson {
  padding: 4rem 2rem;
  border-bottom: 1px solid var(--qs-border);
}

.qs-lesson:nth-child(even) {
  background-color: var(--qs-ivory-light);
}

.qs-lesson__header {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.qs-lesson__number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--qs-copper);
  opacity: 0.25;
  line-height: 1;
  flex-shrink: 0;
  min-width: 56px;
}

.qs-lesson__header h2 {
  font-size: 1.75rem;
  line-height: 1.2;
}

/* ============================================
   Checklists
   ============================================ */
.qs-checklist {
  margin-bottom: 2rem;
}

.qs-checklist h3 {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--qs-evergreen);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--qs-evergreen);
  display: inline-block;
}

.qs-check {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--qs-border);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.qs-check:last-child {
  border-bottom: none;
}

.qs-check:hover {
  background-color: rgba(103, 127, 113, 0.04);
}

.qs-check input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.qs-check__box {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border: 2px solid var(--qs-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  transition: all 0.2s ease;
  position: relative;
}

.qs-check__box::after {
  content: '';
  display: none;
  width: 6px;
  height: 12px;
  border: solid var(--qs-white);
  border-width: 0 2.5px 2.5px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.qs-check input:checked ~ .qs-check__box {
  background-color: var(--qs-evergreen);
  border-color: var(--qs-evergreen);
}

.qs-check input:checked ~ .qs-check__box::after {
  display: block;
}

.qs-check input:checked ~ .qs-check__text {
  color: var(--qs-gray);
}

.qs-check__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--qs-inkwell);
}

.qs-check__text strong {
  font-weight: 600;
  color: var(--qs-inkwell);
}

/* ============================================
   Alternative Path CTA
   ============================================ */
.qs-alt-path {
  background-color: rgba(103, 127, 113, 0.08);
  border-left: 4px solid var(--qs-evergreen);
  padding: 1.5rem 1.75rem;
  margin: 1.25rem 0;
}

.qs-alt-path h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--qs-evergreen);
  margin-bottom: 0.5rem;
}

.qs-alt-path p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--qs-gray);
  margin-bottom: 1rem;
}

.qs-alt-path__btn {
  display: inline-block;
  background-color: var(--qs-evergreen);
  color: var(--qs-white);
  padding: 12px 24px;
  font-family: var(--font-family);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.qs-alt-path__btn:hover {
  background-color: #576d63;
  color: var(--qs-white);
}

/* ============================================
   What You Accomplished
   ============================================ */
.qs-accomplished {
  background-color: var(--qs-evergreen);
  padding: 1.5rem 2rem;
  margin-top: 1rem;
}

.qs-accomplished h4 {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0.5rem;
}

.qs-accomplished p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--qs-white);
  margin: 0;
}

/* ============================================
   Completion Section
   ============================================ */
.qs-complete {
  padding: 5rem 2rem;
  background-color: var(--qs-inkwell);
}

.qs-complete__inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.qs-complete__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background-color: var(--qs-evergreen);
  color: var(--qs-white);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.qs-complete h2 {
  color: var(--qs-white);
  font-size: 2rem;
  margin-bottom: 1rem;
}

.qs-complete p {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--qs-ivory);
}

.qs-complete .btn {
  margin-top: 2rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .qs-hero h1 {
    font-size: 2rem;
  }

  .qs-hero__meta {
    gap: 1.5rem;
  }

  .qs-lesson__header {
    flex-direction: column;
    gap: 0.5rem;
  }

  .qs-lesson__number {
    font-size: 1.75rem;
    min-width: auto;
  }

  .qs-lesson__header h2 {
    font-size: 1.375rem;
  }

  .qs-container {
    padding: 0 1.25rem;
  }

  .qs-nav__link {
    width: 36px;
    height: 36px;
    font-size: 0.8125rem;
  }
}