/* ==========================================================================
   JE Sports Therapy — shared stylesheet
   Reset, layout, nav, footer, buttons, cards, reveal-on-scroll system.
   Page-specific styles live inline in each page's <style> block.
   ========================================================================== */

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
body {
  margin: 0;
  background: var(--color-bone);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin: 0 0 var(--space-2);
  color: var(--color-petrol);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { margin: 0 0 var(--space-2); }
a { color: inherit; }
ul, ol { padding-left: 1.2em; }
button { font-family: inherit; }

/* ---- Focus ---- */
:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-orange);
  color: var(--color-white);
  padding: var(--space-1) var(--space-2);
  z-index: 200;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---- Layout helpers ---- */
.container {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
.section { padding-block: var(--space-6); }
.section--tight { padding-block: var(--space-4); }
.lead {
  font-size: var(--fs-lead);
  color: var(--color-petrol-light);
  max-width: 60ch;
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-orange-dark);
  font-size: var(--fs-small);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.text-center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---- Scroll progress line (desktop cohesion device) ---- */
.scroll-progress {
  position: fixed;
  left: 0;
  top: 0;
  width: 3px;
  height: 100vh;
  z-index: 90;
  pointer-events: none;
  display: none;
}
.scroll-progress__fill {
  width: 100%;
  height: var(--progress, 0%);
  background: var(--color-orange);
  transition: height 80ms linear;
}
@media (min-width: 900px) {
  .scroll-progress { display: block; }
}

/* ---- Header / Nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bone);
  border-bottom: 1px solid var(--color-line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
  gap: var(--space-3);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  color: var(--color-petrol);
  text-decoration: none;
  white-space: nowrap;
}
.nav__brand span { color: var(--color-orange); }
.nav__brand-mark {
  height: 2.75rem;
  width: 2.75rem;
  border-radius: 24%;
  display: block;
  flex-shrink: 0;
}
.nav__toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-petrol);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav__toggle-icon,
.nav__toggle-icon::before,
.nav__toggle-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-petrol);
  position: relative;
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast);
}
.nav__toggle-icon::before { content: ""; position: absolute; top: -6px; }
.nav__toggle-icon::after { content: ""; position: absolute; top: 6px; }
.nav__toggle[aria-expanded="true"] .nav__toggle-icon { background: transparent; }
.nav__toggle[aria-expanded="true"] .nav__toggle-icon::before { transform: translateY(6px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-icon::after { transform: translateY(-6px) rotate(-45deg); }

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__menu a:not(.btn) {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-petrol);
  position: relative;
  padding-bottom: 4px;
}
.nav__menu a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-orange);
  transition: width var(--dur-fast) var(--ease-out);
}
.nav__menu a:not(.btn):hover::after,
.nav__menu a[aria-current="page"]::after { width: 100%; }
.nav__menu a[aria-current="page"] { color: var(--color-orange-dark); }

@media (max-width: 899px) {
  .nav__toggle { display: inline-flex; }
  .nav__menu {
    position: fixed;
    inset: 68px 0 0 0;
    background: var(--color-bone);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--container-pad);
    gap: var(--space-3);
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease-out);
    overflow-y: auto;
  }
  .nav__menu[data-open="true"] { transform: translateX(0); }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  text-decoration: none;
  font-weight: 700;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1rem;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: 44px;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  transform: translateX(-101%) skewX(-12deg);
  transition: transform var(--dur-med) var(--ease-out);
}
.btn:hover::before,
.btn:focus-visible::before { transform: translateX(0) skewX(-12deg); }

.btn--primary {
  background: var(--color-orange);
  color: var(--color-white);
}
.btn--primary::before { background: var(--color-orange-dark); }

.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: var(--color-petrol);
}
.btn--ghost::before { background: var(--color-petrol); }
.btn--ghost:hover, .btn--ghost:focus-visible { color: var(--color-white); }

.btn--on-dark { color: var(--color-bone); border-color: var(--color-bone); }
.btn--on-dark::before { background: var(--color-bone); }
.btn--on-dark:hover, .btn--on-dark:focus-visible { color: var(--color-petrol); }

/* ---- Cards ---- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-top: 4px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  box-shadow: var(--shadow-card);
  transition: transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-top-color: var(--color-orange);
}

/* ---- Chips ---- */
.chip {
  display: inline-block;
  background: var(--color-sage-light);
  color: var(--color-petrol);
  border-radius: 999px;
  padding: 0.35em 0.9em;
  font-size: var(--fs-small);
  font-weight: 600;
  margin: 0 0.4em 0.4em 0;
}

/* ---- Badges (credential trust bar) ---- */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: center;
}
.badge {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.9rem;
  color: var(--color-petrol-light);
  opacity: 0.75;
  white-space: nowrap;
}
.badge--logo {
  display: inline-flex;
  align-items: center;
}
.badge--logo img {
  height: 34px;
  width: auto;
  filter: grayscale(1);
  opacity: 0.7;
  transition: filter var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.badge--logo:hover img {
  filter: none;
  opacity: 1;
}

/* ---- Tables (pricing) ---- */
.price-table {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-2) var(--space-4);
}
.price-table th, .price-table td {
  text-align: left;
  padding: 0.8em 1em;
  border-bottom: 1px solid var(--color-line);
}
.price-table th {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-petrol);
  font-size: 0.9rem;
}
.price-table td:last-child, .price-table th:last-child {
  text-align: right;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--color-orange-dark);
}

/* ---- Accordion (FAQ) ---- */
.accordion { border-top: 1px solid var(--color-line); }
.accordion__item { border-bottom: 1px solid var(--color-line); }
.accordion__item summary {
  cursor: pointer;
  list-style: none;
  padding: var(--space-2) 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--color-petrol);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.accordion__item summary::-webkit-details-marker { display: none; }
.accordion__item summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-orange);
  transition: transform var(--dur-fast) var(--ease-out);
  flex-shrink: 0;
}
.accordion__item[open] summary::after { transform: rotate(45deg); }
.accordion__item p { padding-bottom: var(--space-2); max-width: 65ch; }

/* ---- Reveal-on-scroll system ----
   Elements: <div data-reveal="up|fade|left|right|scale" data-reveal-delay="1..4">
   JS adds .is-visible when in view; reduced-motion users see final state immediately. */
[data-reveal] {
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  transition-delay: calc(var(--reveal-delay, 0) * 90ms);
}
[data-reveal="up"] { transform: translateY(28px); }
[data-reveal="left"] { transform: translateX(-32px); }
[data-reveal="right"] { transform: translateX(32px); }
[data-reveal="scale"] { transform: scale(0.94); }
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}
.no-js [data-reveal] { opacity: 1; transform: none; }

/* ---- Footer ---- */
.site-footer {
  background: var(--color-petrol);
  color: var(--color-sage-light);
  padding-block: var(--space-5) var(--space-4);
}
.site-footer h2, .site-footer h3 { color: var(--color-white); }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--color-orange); }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.footer-grid h3 {
  font-size: 1.1rem;
  color: var(--color-orange);
  margin-bottom: var(--space-1);
}
.footer-social {
  display: flex;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: var(--space-1) 0 0;
}
.footer-bottom {
  border-top: 1px solid rgba(246, 244, 239, 0.15);
  padding-top: var(--space-3);
  font-size: var(--fs-small);
  opacity: 0.8;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
}

/* ---- Generic grids ---- */
.grid {
  display: grid;
  gap: var(--space-3);
}
.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: 1199px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  h1 { font-size: clamp(2.2rem, 9vw, 3rem); }
}

/* ---- Techniques ticker (used on Treatments page) ---- */
.ticker {
  overflow: hidden;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding-block: var(--space-2);
}
.ticker__track {
  display: flex;
  gap: var(--space-2);
  width: max-content;
  animation: ticker-scroll 28s linear infinite;
}
.ticker:hover .ticker__track { animation-play-state: paused; }
@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .ticker__track { animation: none; flex-wrap: wrap; width: auto; }
}