/* ==========================================================================
   Coastal Precision — Shared Components
   Sharp corners · Dark heroes · Edge-to-edge grids · Warm refinement
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body-serif);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--coastal-900);
  background: var(--white);
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

/* --- Container ----------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container--narrow { max-width: var(--container-md); }
.container--wide   { max-width: var(--container-2xl); }

/* --- Typography ---------------------------------------------------------- */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, var(--text-6xl));
  font-weight: 400;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--coastal-900);
}
.display-xl em {
  font-style: italic;
  color: var(--coastal-700);
}
.display-lg {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, var(--text-5xl));
  font-weight: 400;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--coastal-900);
}
.display-lg em {
  font-style: italic;
  color: var(--coastal-700);
}
.display-md {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, var(--text-4xl));
  font-weight: 400;
  line-height: var(--leading-snug);
  color: var(--coastal-900);
}
.display-md em {
  font-style: italic;
  color: var(--coastal-700);
}

/* Dark surface overrides for display italic accent */
.section--dark .display-xl em,
.section--dark .display-lg em,
.section--dark .display-md em { color: var(--coastal-400); }

.heading-lg {
  font-family: var(--font-ui);
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: var(--leading-snug);
}
.heading-md {
  font-family: var(--font-ui);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: var(--leading-snug);
}
.heading-sm {
  font-family: var(--font-ui);
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: var(--leading-snug);
}
.body-lg {
  font-family: var(--font-body-serif);
  font-size: 18px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--coastal-800);
}
.body-md {
  font-family: var(--font-body-serif);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--coastal-800);
}
.body-sm {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 400;
  line-height: var(--leading-normal);
  color: var(--gray-500);
}

/* --- Overline with leading line ------------------------------------------ */
.overline {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--coastal-600);
}
.overline::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: currentColor;
  flex-shrink: 0;
}
/* Centered overline variant */
.overline--center {
  justify-content: center;
}
/* On dark surfaces */
.section--dark .overline { color: var(--coastal-400); }

/* --- Nav — base (sticky white for results pages) ------------------------- */
.nav {
  position: sticky;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--duration-fast) var(--ease-out);
}
.nav.scrolled { box-shadow: var(--shadow-md); }
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.nav__logo {
  font-family: var(--font-ui);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--coastal-900);
  letter-spacing: -0.01em;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}
.nav__link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--duration-fast) var(--ease-out);
}
.nav__link:hover { color: var(--coastal-900); }

/* Nav transparent variant (for dark hero pages) */
.nav--transparent {
  position: absolute;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.nav--transparent .nav__logo { color: var(--white); }
.nav--transparent .nav__link { color: rgba(255,255,255,0.7); }
.nav--transparent .nav__link:hover { color: var(--white); }

/* --- Mobile hamburger toggle --------------------------------------------- */
.nav__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  position: relative;
  z-index: 101;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--coastal-900);
  transition: all 0.3s ease;
  position: absolute;
}
.nav__toggle span::before { content: ''; top: -7px; }
.nav__toggle span::after  { content: ''; top: 7px; }
/* Dark nav variant */
.nav--transparent .nav__toggle span,
.nav--transparent .nav__toggle span::before,
.nav--transparent .nav__toggle span::after { background: var(--white); }
/* Open state: X */
.nav__toggle.open span { background: transparent; }
.nav__toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav__toggle.open span::after  { top: 0; transform: rotate(-45deg); }

/* --- About split (image + text side-by-side) ----------------------------- */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--gray-200);
}
@media (max-width: 768px) {
  .about-split {
    grid-template-columns: 1fr;
  }
  .about-split > div:last-child {
    padding: var(--space-8) var(--space-6) !important;
  }
}

/* --- Buttons — sharp corners --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  padding: 14px var(--space-6);
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}
.btn--primary {
  background: var(--coastal-900);
  color: var(--white);
}
.btn--primary:hover {
  background: var(--coastal-800);
  box-shadow: var(--shadow-md);
}
.btn--secondary {
  background: transparent;
  color: var(--coastal-900);
  border: 1.5px solid var(--coastal-900);
}
.btn--secondary:hover {
  background: var(--coastal-50);
}
.btn--white {
  background: var(--white);
  color: var(--coastal-900);
}
.btn--white:hover {
  background: var(--gray-50);
  box-shadow: var(--shadow-md);
}
.btn--ghost {
  background: transparent;
  color: var(--coastal-800);
  padding: var(--space-2) var(--space-4);
}
.btn--ghost:hover { color: var(--coastal-900); background: var(--gray-50); }
.btn--lg {
  font-size: var(--text-base);
  padding: 16px 32px;
}
.btn--full { width: 100%; }

/* --- Cards — sharp corners, edge-to-edge --------------------------------- */
.card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 0;
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
}
/* Hover gradient bar at top */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--coastal-600), var(--coastal-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out);
}
.card:hover::before {
  transform: scaleX(1);
}
.card:hover {
  box-shadow: var(--shadow-md);
}
.card--sand {
  background: var(--sand-50);
  border-color: var(--sand-300);
}
.card--coastal {
  background: var(--coastal-50);
  border-color: var(--coastal-200);
}
.card--dark {
  background: var(--coastal-900);
  border-color: var(--coastal-800);
  color: var(--white);
}
.card--dark .body-md,
.card--dark .body-lg { color: var(--coastal-300); }

/* Edge-to-edge card grid */
.grid--edge {
  display: grid;
  gap: 0;
}
.grid--edge .card {
  margin: -0.5px;
}

/* --- Stats bar with dividers --------------------------------------------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--gray-200);
  background: var(--white);
}
.stats-bar__item {
  padding: var(--space-6) var(--space-4);
  text-align: center;
  border-right: 1px solid var(--gray-200);
}
.stats-bar__item:last-child {
  border-right: none;
}
.stats-bar__value {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 400;
  line-height: 1;
  color: var(--coastal-900);
  margin-bottom: var(--space-2);
}
.stats-bar__label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray-500);
}
/* Dark variant */
.stats-bar--dark {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.1);
}
.stats-bar--dark .stats-bar__item {
  border-color: rgba(255,255,255,0.1);
}
.stats-bar--dark .stats-bar__value { color: var(--white); }
.stats-bar--dark .stats-bar__label { color: var(--coastal-400); }

@media (max-width: 768px) {
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-bar__item:nth-child(2) {
    border-right: none;
  }
  .stats-bar__item:nth-child(1),
  .stats-bar__item:nth-child(2) {
    border-bottom: 1px solid var(--gray-200);
  }
  .stats-bar--dark .stats-bar__item:nth-child(1),
  .stats-bar--dark .stats-bar__item:nth-child(2) {
    border-bottom-color: rgba(255,255,255,0.1);
  }
}

/* --- Progress Bar -------------------------------------------------------- */
.progress {
  width: 100%;
  height: 4px;
  background: var(--gray-200);
  overflow: hidden;
}
.progress__bar {
  height: 100%;
  background: var(--coastal-600);
  transition: width var(--duration-normal) var(--ease-out);
}

/* --- Badge --------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 0;
  background: var(--coastal-100);
  color: var(--coastal-800);
}
.badge--sand {
  background: var(--sand-200);
  color: var(--sand-500);
}
.badge--success {
  background: #e6f4ee;
  color: var(--success);
}
.badge--dark {
  background: rgba(255,255,255,0.1);
  color: var(--coastal-300);
}

/* --- Divider ------------------------------------------------------------- */
.divider {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: var(--space-12) 0;
}
.divider--sand {
  border-color: var(--sand-300);
}

/* --- Section Spacing ----------------------------------------------------- */
.section {
  padding: var(--space-20) 0;
}
.section--sm { padding: var(--space-12) 0; }
.section--lg { padding: var(--space-32) 0; }
.section--sand {
  background: var(--sand-100);
  border-top: 1px solid var(--sand-200);
  border-bottom: 1px solid var(--sand-200);
}
.section--dark {
  background: var(--coastal-900);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
/* Radial glow on dark sections */
.section--dark::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse at center, rgba(107,149,186,0.12) 0%, transparent 70%);
  pointer-events: none;
}

/* --- Grid ---------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--space-8);
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid--2, .grid--3, .grid--4 {
    grid-template-columns: 1fr;
  }

  /* Mobile nav: hide links, show hamburger */
  .nav__links { display: none; }
  .nav__toggle { display: flex; }

  /* When menu is open */
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-4) var(--space-6);
    gap: 0;
    box-shadow: var(--shadow-md);
    z-index: 99;
  }
  .nav__links.open li {
    border-bottom: 1px solid var(--gray-100);
  }
  .nav__links.open li:last-child { border-bottom: none; }
  .nav__links.open .nav__link {
    display: block;
    padding: 12px 0;
    font-size: var(--text-base);
  }
  .nav--transparent .nav__links.open {
    background: rgba(20,40,56,0.97);
    border-bottom-color: rgba(255,255,255,0.1);
  }
  .nav--transparent .nav__links.open li {
    border-bottom-color: rgba(255,255,255,0.08);
  }

  /* Lesson page inline nav links */
  .lesson-nav-links { display: none !important; }
  .lesson-nav-links.open {
    display: flex !important;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-4) var(--space-6);
    gap: 0;
    box-shadow: var(--shadow-md);
    z-index: 99;
  }
  .lesson-nav-links.open a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 14px;
  }
  .lesson-nav-links.open a:last-child { border-bottom: none; }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .grid--3, .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Footer -------------------------------------------------------------- */
.footer {
  background: var(--coastal-900);
  color: var(--coastal-300);
  padding: var(--space-16) 0 var(--space-8);
}
.footer__inner {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.footer__top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.footer__brand {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--white);
  margin-bottom: var(--space-4);
}
.footer__col-title {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--coastal-400);
  margin-bottom: var(--space-4);
}
.footer__link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--coastal-300);
  display: block;
  padding: var(--space-1) 0;
  transition: color var(--duration-fast) var(--ease-out);
}
.footer__link:hover { color: var(--white); }
.footer__text {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--coastal-400);
  max-width: 360px;
  line-height: var(--leading-normal);
}
.footer__bottom {
  border-top: 1px solid var(--coastal-800);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--coastal-400);
}

@media (max-width: 768px) {
  .footer__top { flex-direction: column; gap: var(--space-8); }
  .footer__bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
}

/* --- Quiz — sharp corners ------------------------------------------------ */
.quiz {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 0;
  box-shadow: var(--shadow-xl);
  padding: var(--space-10);
  max-width: 480px;
  width: 100%;
}
.quiz__header {
  margin-bottom: var(--space-6);
}
.quiz__step-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: var(--space-4);
}
.quiz__question {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  line-height: var(--leading-snug);
  color: var(--coastal-900);
  margin-bottom: var(--space-6);
}
.quiz__options {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.quiz__option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: 0;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  background: var(--white);
}
.quiz__option:hover {
  border-color: var(--coastal-400);
  background: var(--coastal-50);
}
.quiz__option.selected {
  border-color: var(--coastal-600);
  background: var(--coastal-50);
}
.quiz__option input[type="radio"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--gray-300);
  border-radius: 50%;
  flex-shrink: 0;
  transition: all var(--duration-fast) var(--ease-out);
}
.quiz__option.selected input[type="radio"] {
  border-color: var(--coastal-600);
  background: var(--coastal-600);
  box-shadow: inset 0 0 0 3px var(--white);
}
.quiz__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-200);
}
.quiz__counter {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--gray-400);
}

/* --- Blockquote / Testimonial -------------------------------------------- */
.quote {
  position: relative;
  padding: var(--space-12) var(--space-8);
}
.quote__mark {
  font-family: var(--font-display);
  font-size: 150px;
  font-weight: 400;
  line-height: 1;
  color: var(--coastal-200);
  position: absolute;
  top: -10px;
  left: var(--space-4);
  user-select: none;
  pointer-events: none;
}
.quote__text {
  font-family: var(--font-body-serif);
  font-size: var(--text-xl);
  font-weight: 300;
  font-style: italic;
  line-height: 1.75;
  color: var(--coastal-900);
  position: relative;
  z-index: 1;
  max-width: 640px;
}
.quote__attribution {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--coastal-800);
  margin-top: var(--space-6);
  position: relative;
  z-index: 1;
}
.quote__role {
  font-weight: 400;
  color: var(--gray-500);
}

/* --- Process numbered cards ---------------------------------------------- */
.process-number {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 400;
  line-height: 1;
  color: var(--coastal-200);
  margin-bottom: var(--space-4);
}

/* --- Video training card ------------------------------------------------- */
.video-card {
  border: 1px solid var(--gray-200);
  background: var(--white);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}
.video-card:hover {
  box-shadow: var(--shadow-md);
}
.video-card__thumb {
  position: relative;
  aspect-ratio: 6/5;
  background: var(--coastal-900);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0.8;
}
.video-card__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: var(--coastal-600);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-out);
}
.video-card:hover .video-card__play {
  background: var(--coastal-700);
  transform: translate(-50%, -50%) scale(1.08);
}
.video-card__play-icon {
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 16px solid var(--white);
  margin-left: 3px;
}
.video-card__body {
  padding: var(--space-6);
}

/* --- Utility ------------------------------------------------------------- */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.mx-auto     { margin-left: auto; margin-right: auto; }
.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }
.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.flex  { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}