/* The Posture Lab — main styles */

.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}
.container--wide { max-width: var(--content-wide); }
.container--narrow { max-width: var(--content-narrow); }

.section {
  padding-block: clamp(var(--space-12), 7vw, var(--space-24));
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-interactive);
}
.header--scrolled { box-shadow: var(--shadow-sm); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.brand__logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}
.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: 0.01em;
}
.brand__tag {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-4), 3vw, var(--space-8));
}
.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text-muted);
  position: relative;
  padding-block: var(--space-1);
}
.nav__link:hover { color: var(--color-text); }
.nav__link[aria-current="page"] { color: var(--color-text); }
.nav__link[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.header__actions { display: flex; align-items: center; gap: var(--space-3); }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover { color: var(--color-text); border-color: var(--color-text-faint); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: all var(--transition-interactive);
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--accent {
  background: var(--color-accent);
  color: #fff;
}
.btn--accent:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--lg { padding: 0.95rem 2rem; font-size: var(--text-base); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.62) saturate(1.05);
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(in oklab, oklch(0.2 0.03 160 / 0.55), oklch(0.15 0.02 160 / 0.35));
}
.hero__inner {
  color: #f4f1ea;
  max-width: 720px;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #e0d4bf;
  margin-bottom: var(--space-5);
}
.hero__eyebrow::before {
  content: '';
  width: 28px; height: 1px;
  background: var(--color-accent);
}
.hero__title {
  font-size: var(--text-3xl);
  font-weight: 500;
  color: #fbf8f2;
  margin-bottom: var(--space-6);
}
.hero__title em {
  font-style: italic;
  color: #e8c896;
}
.hero__lead {
  font-size: var(--text-lg);
  color: #e6e0d4;
  margin-bottom: var(--space-10);
  max-width: 56ch;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-4); }

/* ===== Section headings ===== */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--color-accent);
}
.section__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-5);
  max-width: 18ch;
}
.section__lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-12);
}
.section__header--centered { text-align: center; margin-inline: auto; }
.section__header--centered .section__title { margin-inline: auto; }

/* ===== Cards / Grid ===== */
.grid {
  display: grid;
  gap: var(--space-6);
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-highlight);
}
.card__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.card__text {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.card__link {
  margin-top: auto;
  padding-top: var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.card__link:hover { gap: var(--space-3); }

/* ===== Split / feature layout ===== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-20));
  align-items: center;
}
.split__media {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow-lg);
}
.split__media img { width: 100%; height: 100%; object-fit: cover; }
.split--reverse .split__media { order: 2; }

/* ===== Pull quote ===== */
.pullquote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: italic;
  line-height: 1.35;
  color: var(--color-text);
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  max-width: 24ch;
}

/* ===== Values list ===== */
.values { display: grid; gap: var(--space-6); }
.value {
  display: flex;
  gap: var(--space-5);
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}
.value:last-child { border-bottom: none; }
.value__num {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-accent);
  flex-shrink: 0;
  width: 2.5rem;
}
.value__title { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.value__text { color: var(--color-text-muted); }

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  padding: var(--space-12);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-xl);
}
.stat__num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: #f4f1ea;
}
.stat__label {
  font-size: var(--text-sm);
  color: #c4d8d4;
}

/* ===== CTA band ===== */
.cta-band {
  text-align: center;
  padding-block: clamp(var(--space-16), 7vw, var(--space-24));
  background: var(--color-surface-offset);
  border-radius: var(--radius-xl);
}
.cta-band__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}
.cta-band__text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 50ch;
  margin-inline: auto;
}
.cta-band__actions { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.footer {
  background: #16201f;
  color: #c4ccc9;
  padding-block: var(--space-16) var(--space-10);
  margin-top: var(--space-20);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}
.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: #f4f1ea;
  margin-bottom: var(--space-3);
}
.footer__brand-tag {
  font-size: var(--text-sm);
  color: #8a948f;
  max-width: 32ch;
}
.footer__col h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8a948f;
  margin-bottom: var(--space-4);
}
.footer__col ul { display: grid; gap: var(--space-3); }
.footer__col a {
  color: #c4ccc9;
  text-decoration: none;
  font-size: var(--text-sm);
}
.footer__col a:hover { color: #f4f1ea; }
.footer__bottom {
  border-top: 1px solid #2a3433;
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: #6b7570;
}

/* ===== Mobile nav ===== */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

/* ===== Page hero (interior) ===== */
.page-hero {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-border);
}
.page-hero__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}
.page-hero__lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
}

/* ===== Contact info ===== */
.contact-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); }
.info-list { display: grid; gap: var(--space-8); }
.info-item { display: flex; gap: var(--space-4); align-items: flex-start; }
.info-item__icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  flex-shrink: 0;
}
.info-item__label {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}
.info-item__value { font-size: var(--text-base); font-weight: 500; }
.info-item__value a { color: var(--color-text); text-decoration: none; }
.info-item__value a:hover { color: var(--color-primary); }

.map-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 5;
}
.map-card iframe { width: 100%; height: 100%; border: 0; }

/* ===== Testimonials ===== */
.testimonial { position: relative; }
.testimonial--featured {
  text-align: center;
  padding: var(--space-8) 0;
}
.testimonial__mark {
  font-family: var(--font-display);
  font-size: 5rem;
  line-height: 1;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-2);
}
.testimonial__quote {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-style: italic;
  line-height: 1.35;
  color: var(--color-text);
  margin: 0 0 var(--space-8);
}
.testimonial__quote--sm {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-6);
  flex: 1;
}
.testimonial__rating {
  color: var(--color-accent);
  letter-spacing: 0.15em;
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}
.testimonial__author { display: flex; align-items: center; gap: var(--space-4); justify-content: center; }
.testimonial__author--inline { justify-content: flex-start; }
.testimonial__avatar {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  flex-shrink: 0;
}
.testimonial__avatar--sm { width: 40px; height: 40px; font-size: var(--text-xs); }
.testimonial__author-meta { display: flex; flex-direction: column; line-height: 1.3; }
.testimonial__name { font-weight: 600; font-size: var(--text-base); }
.testimonial__detail { font-size: var(--text-sm); color: var(--color-text-muted); }
.testimonial-disclaimer {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-12);
  opacity: 0.85;
}
.share-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: var(--space-8); }
  .split--reverse .split__media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav, .header__actions .btn { display: none; }
  .nav-toggle { display: grid; }
  .nav--open {
    display: flex;
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
    z-index: 60;
  }
  .nav--open .nav__link { font-size: var(--text-xl); font-family: var(--font-display); }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .grid--4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: var(--space-8); padding: var(--space-8); }
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .hero__title { font-size: var(--text-2xl); }
}

/* Fade-in on scroll */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}