/* ========================================
   DESIGN TOKENS
   ======================================== */
:root {
  /* Palette — warm cream + deep teal + coral accent */
  --color-bg: #faf6f0;
  --color-surface: #ffffff;
  --color-surface-alt: #f3ede4;
  --color-text: #1a1a1a;
  --color-text-secondary: #5c5347;
  --color-accent: #b85c38;
  --color-accent-hover: #a04e2e;
  --color-accent-light: rgba(184, 92, 56, 0.08);
  --color-teal: #2a6b5e;
  --color-teal-light: rgba(42, 107, 94, 0.08);
  --color-border: #e2dbd1;
  --color-border-light: #ede8e0;

  /* Typography */
  --font-display: Georgia, 'Palatino Linotype', 'Book Antiqua', Palatino, serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;

  --fs-display: clamp(2.4rem, 5vw, 3.6rem);
  --fs-h1: clamp(2rem, 4vw, 3rem);
  --fs-h2: clamp(1.5rem, 3vw, 2rem);
  --fs-h3: 1.15rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-tiny: 0.75rem;

  --fw-regular: 400;
  --fw-semibold: 600;

  --lh-tight: 1.2;
  --lh-normal: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* Layout */
  --container-max: 72rem;
  --content-max: 52rem;
  --rail-width: 4rem;
  --bp-md: 48rem;
  --bp-lg: 64rem;
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
ul { list-style: none; }

/* ========================================
   LAYOUT
   ======================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-lg);
}

.section-sub {
  color: var(--color-text-secondary);
  font-size: var(--fs-body);
  max-width: 38rem;
  margin-bottom: var(--space-xl);
}

/* ========================================
   PROGRESS RAIL
   ======================================== */
.progress-rail {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: var(--rail-width);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  pointer-events: none;
}

.progress-rail > * {
  pointer-events: auto;
}

.rail-track {
  position: absolute;
  top: 15%;
  bottom: 15%;
  width: 2px;
  background: var(--color-border);
  border-radius: 1px;
  overflow: hidden;
}

.rail-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: var(--color-accent);
  border-radius: 1px;
  transition: height var(--duration-fast) linear;
}

.rail-dots {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.rail-dot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
}

.rail-dot.active {
  border-color: var(--color-accent);
  background: var(--color-accent);
  transform: scale(1.2);
}

.rail-dot:hover .rail-label,
.rail-dot.active .rail-label {
  opacity: 1;
  transform: translateX(0);
}

.rail-label {
  position: absolute;
  right: calc(100% + 12px);
  white-space: nowrap;
  font-size: var(--fs-tiny);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  opacity: 0;
  transform: translateX(8px);
  transition: all var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(184, 92, 56, 0.3);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-ghost {
  border: 1.5px solid var(--color-border);
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  border-color: var(--color-text-secondary);
  color: var(--color-text);
}

.btn-ghost:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

/* ========================================
   HERO
   ======================================== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: var(--space-3xl) var(--space-lg);
  padding-right: calc(var(--rail-width) + var(--space-lg));
  position: relative;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--content-max);
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-teal);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: var(--fw-semibold);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.hero-title em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 36rem;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.hero-cta-row {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.hero-meta {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
}

.hero-meta strong {
  color: var(--color-text);
}

.hero-deco {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  width: clamp(10rem, 20vw, 18rem);
  height: clamp(10rem, 20vw, 18rem);
  color: var(--color-accent);
  opacity: 0.12;
}

.hero-pencil {
  width: 100%;
  height: 100%;
}

/* ========================================
   AUDIENCE
   ======================================== */
.section-audience {
  background: var(--color-surface);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: var(--space-lg);
}

.audience-card {
  padding: var(--space-xl);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.audience-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.audience-icon {
  width: 48px;
  height: 48px;
  color: var(--color-teal);
  margin-bottom: var(--space-md);
}

.audience-card h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  margin-bottom: var(--space-sm);
}

.audience-card p {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  line-height: 1.6;
}

/* ========================================
   CURRICULUM / ACCORDION
   ======================================== */
.section-curriculum {
  background: var(--color-bg);
}

.accordion {
  max-width: var(--content-max);
}

.accordion-item {
  border-bottom: 1px solid var(--color-border-light);
}

.accordion-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
  padding: var(--space-lg) 0;
  text-align: left;
  font-size: var(--fs-body);
  transition: color var(--duration-fast) var(--ease-out);
}

.accordion-trigger:hover {
  color: var(--color-accent);
}

.accordion-trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.acc-number {
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--color-accent);
  min-width: 2rem;
}

.acc-title {
  font-weight: var(--fw-semibold);
  flex: 1;
}

.acc-meta {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
}

.acc-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-out);
  color: var(--color-text-secondary);
}

.accordion-trigger[aria-expanded="true"] .acc-chevron {
  transform: rotate(180deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out),
              padding var(--duration-slow) var(--ease-out);
  padding: 0 0 0 2rem;
}

.accordion-panel[aria-hidden="false"] {
  max-height: 600px;
  padding: 0 0 var(--space-xl) 2rem;
}

.accordion-panel ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.accordion-panel li {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  line-height: 1.7;
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-border-light);
}

.accordion-panel li strong {
  color: var(--color-text);
}

.acc-practice {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--color-teal-light);
  border-radius: var(--radius-md);
  font-size: var(--fs-small);
  color: var(--color-teal);
  line-height: 1.6;
}

.acc-practice strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-teal);
  text-transform: uppercase;
  font-size: var(--fs-tiny);
  letter-spacing: 0.05em;
}

/* FAQ Accordion — no number column */
#faqAccordion .accordion-trigger {
  gap: var(--space-md);
}

#faqAccordion .acc-title {
  flex: 1;
}

#faqAccordion .accordion-panel {
  padding: 0 0 0 var(--space-md);
}

#faqAccordion .accordion-panel[aria-hidden="false"] {
  padding: 0 0 var(--space-xl) var(--space-md);
}

#faqAccordion .accordion-panel p {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  line-height: 1.7;
}

/* ========================================
   INSTRUCTOR
   ======================================== */
.section-instructor {
  background: var(--color-surface);
}

.instructor-card {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: var(--space-2xl);
  align-items: start;
  max-width: var(--content-max);
}

.instructor-portrait {
  position: relative;
}

.portrait-placeholder {
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  background: var(--color-surface-alt);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
}

.portrait-placeholder svg {
  width: 60%;
  height: 60%;
}

.instructor-info h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  margin-bottom: var(--space-xs);
}

.instructor-role {
  color: var(--color-teal);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-md);
}

.instructor-info p {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.instructor-info p:last-child {
  margin-bottom: 0;
}

.instructor-quote {
  padding-left: var(--space-md);
  border-left: 3px solid var(--color-accent);
  font-style: italic;
}

/* ========================================
   REVIEWS
   ======================================== */
.section-reviews {
  background: var(--color-bg);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.review-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.review-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.review-stars {
  color: var(--color-accent);
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: var(--space-sm);
}

.review-card blockquote {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  font-style: normal;
}

.review-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-teal-light);
  color: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-semibold);
  font-size: var(--fs-small);
}

.review-author strong {
  display: block;
  font-size: var(--fs-small);
}

.review-author span {
  font-size: var(--fs-tiny);
  color: var(--color-text-secondary);
}

.reviews-summary {
  display: flex;
  gap: var(--space-2xl);
  justify-content: center;
  flex-wrap: wrap;
}

.summary-stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  line-height: var(--lh-tight);
}

.stat-label {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
}

/* ========================================
   FAQ
   ======================================== */
.section-faq {
  background: var(--color-surface);
}

#faqAccordion {
  max-width: var(--content-max);
}

/* ========================================
   FINAL CTA
   ======================================== */
.section-final-cta {
  background: var(--color-teal);
  color: #fff;
  text-align: center;
}

.final-cta-title {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-md);
}

.final-cta-sub {
  color: rgba(255,255,255,0.8);
  max-width: 32rem;
  margin: 0 auto var(--space-xl);
  line-height: 1.7;
}

.section-final-cta .btn-primary {
  background: #fff;
  color: var(--color-teal);
}

.section-final-cta .btn-primary:hover {
  background: var(--color-bg);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.final-cta-note {
  margin-top: var(--space-md);
  font-size: var(--fs-small);
  color: rgba(255,255,255,0.6);
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  padding: var(--space-xl) 0;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  border-top: 1px solid var(--color-border-light);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: var(--bp-lg)) {
  .progress-rail {
    display: none;
  }

  .hero {
    padding-right: var(--space-lg);
  }
}

@media (max-width: var(--bp-md)) {
  .hero {
    min-height: 80vh;
  }

  .hero-deco {
    display: none;
  }

  .instructor-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .instructor-portrait {
    display: flex;
    justify-content: center;
  }

  .instructor-quote {
    text-align: left;
  }

  .acc-meta {
    display: none;
  }

  .reviews-summary {
    gap: var(--space-xl);
  }

  .rail-dots {
    gap: 1.2rem;
  }
}

@media (max-width: 30rem) {
  .hero-cta-row {
    flex-direction: column;
  }

  .hero-cta-row .btn {
    width: 100%;
  }

  .audience-grid {
    grid-template-columns: 1fr;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--space-2xl) 0;
  }
}

/* ========================================
   FOCUS VISIBLE (keyboard nav)
   ======================================== */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ========================================
   REDUCED MOTION
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .accordion-panel { transition: none; }
  .acc-chevron { transition: none; }
  .rail-dot { transition: none; }
  .rail-fill { transition: none; }
}