/* ============================================================
   Reiki Energy — design tokens
   ============================================================ */
:root {
  /* Palette: warm sand base, terracotta primary, muted gold + sage accents */
  --color-bg: #FBF7F0;
  --color-bg-alt: #F3ECDF;
  --color-surface: #FFFFFF;
  --color-text: #2E2A25;
  --color-text-muted: #6B6259;
  --color-border: #E7DECD;

  --color-primary: #4C7A5C;
  --color-primary-dark: #33543E;
  --color-primary-tint: #E7EFE7;

  --color-gold: #C79A46;
  --color-gold-dark: #92702F;
  --color-sage: #7C8B6F;

  --font-heading: "Noto Serif TC", "PMingLiU", serif;
  --font-body: "Noto Sans TC", "PingFang HK", "Microsoft JhengHei", sans-serif;

  --radius: 10px;
  --shadow-card: 0 2px 10px rgba(46, 42, 37, 0.08);
  --shadow-card-hover: 0 8px 24px rgba(46, 42, 37, 0.14);

  --nav-height: 68px;
  --content-max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 12px); }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.75;
  padding-top: var(--nav-height);
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary-dark);
  line-height: 1.4;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.6rem); }
h2 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.8rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------------- Nav ---------------- */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-height);
  background: rgba(251, 247, 240, 0.94);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}
.site-nav .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}
.site-nav__brand img { height: 34px; width: auto; }
.site-nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-primary-dark);
  cursor: pointer;
}
.site-nav__links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__links a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.site-nav__links a:hover,
.site-nav__links a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}
.site-nav__cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 999px;
  border-bottom: none !important;
}
.site-nav__cta:hover { background: var(--color-primary-dark); }

/* Hamburger through iPad Pro (incl. 11" landscape ~1194px); desktop from 1201px+ */
@media (max-width: 1200px) {
  .site-nav__toggle { display: block; }
  .site-nav__links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    display: none;
  }
  .site-nav__links.is-open { display: flex; }
  .site-nav__links li { border-top: 1px solid var(--color-border); }
  .site-nav__links li:first-child { border-top: none; }
  .site-nav__links a { display: block; padding: 12px 20px; border-bottom: none; }
  .site-nav__cta { margin: 10px 20px; text-align: center; }
}

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  padding: 64px 0 56px;
  text-align: center;
  background:
    radial-gradient(60% 90% at 50% -10%, var(--color-primary-tint) 0%, transparent 70%),
    var(--color-bg);
}
.hero__title {
  margin-bottom: 0.35rem;
}
.hero__logos {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 4vw, 2.4rem);
  flex-wrap: wrap;
}
.hero__logos img {
  height: clamp(144px, 28vw, 240px);
  width: auto;
  max-width: min(480px, 84vw);
  object-fit: contain;
}
.hero__subtitle {
  margin: 0 0 1rem;
  font-size: clamp(1rem, 0.9rem + 0.6vw, 1.25rem);
  color: var(--color-gold-dark);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.hero__intro {
  display: flex;
  justify-content: center;
  margin-bottom: 1.4rem;
}
.hero__cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  max-width: 480px;
  margin: 0 auto 1.8rem;
}
.hero-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  aspect-ratio: 1 / 1;
  width: 100%;
  padding: 16px 12px;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
a.hero-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--color-primary);
  text-decoration: none;
}
.hero-card__zh {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 0.95rem + 1.4vw, 1.65rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.35;
}
.hero-card__en {
  font-size: clamp(1rem, 0.85rem + 0.7vw, 1.15rem);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.hero-card--soon {
  opacity: 0.72;
  cursor: default;
  position: relative;
}
.hero-card__badge {
  margin-top: 0.2rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-gold-dark);
}
@media (max-width: 420px) {
  .hero__cards {
    gap: 10px;
    max-width: 100%;
  }
  .hero-card { padding: 12px 8px; }
}
.hero__eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  font-weight: 700;
  margin-bottom: 0.8rem;
}
.hero__lede {
  max-width: 640px;
  margin: 0 auto 1.6rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}
.hero__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Flutter-style showDialog: dark barrier + elevated card */
.intro-dialog {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
}
.intro-dialog[hidden] { display: none; }
body.intro-dialog-open { overflow: hidden; }

.intro-dialog__barrier {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  opacity: 0;
  transition: opacity 0.2s ease;
  cursor: pointer;
}
.intro-dialog.is-visible .intro-dialog__barrier { opacity: 1; }

.intro-dialog__card {
  position: relative;
  z-index: 1;
  width: min(420px, 100%);
  max-height: min(80vh, 560px);
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: 12px;
  box-shadow:
    0 11px 15px -7px rgba(0, 0, 0, 0.2),
    0 24px 38px 3px rgba(0, 0, 0, 0.14),
    0 9px 46px 8px rgba(0, 0, 0, 0.12);
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.2s ease, transform 0.2s ease;
  text-align: left;
  overflow: hidden;
}
.intro-dialog.is-visible .intro-dialog__card {
  opacity: 1;
  transform: scale(1);
}

.intro-dialog__header {
  display: grid;
  grid-template-columns: 40px 1fr 40px;
  align-items: start;
  gap: 4px;
  padding: 20px 12px 8px;
}
.intro-dialog__title {
  grid-column: 2;
  font-size: clamp(1.45rem, 1.15rem + 1.2vw, 1.9rem);
  margin: 4px 0 0;
  text-align: center;
  line-height: 1.5;
}
.intro-dialog__close {
  grid-column: 3;
  justify-self: end;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.intro-dialog__close:hover {
  background: rgba(46, 42, 37, 0.08);
  color: var(--color-primary-dark);
}
.intro-dialog__close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.intro-dialog__content {
  padding: 8px 24px 8px;
  overflow: auto;
}
.intro-dialog__content p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.15rem;
  line-height: 1.9;
}

.intro-dialog__actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 16px 16px;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid var(--color-primary);
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--color-primary); }
.btn-ghost:hover { background: var(--color-primary-tint); text-decoration: none; }

.news-feature {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: 1.4rem 1.6rem;
  align-items: start;
  margin: 1rem 0 0.4rem;
}
.news-feature__image {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}
.news-feature__body p:last-child { margin-bottom: 0; }
@media (max-width: 560px) {
  .news-feature {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
  .news-feature__image { max-width: 200px; }
  .news-feature__body { text-align: left; width: 100%; }
}

.course-category {
  scroll-margin-top: calc(var(--nav-height) + 12px);
}
.course-category:last-child {
  margin-bottom: 3.5rem;
}

.other-courses {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  max-width: 560px;
  margin: 0 auto;
}
.other-course-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  aspect-ratio: 1 / 1;
  width: 100%;
  padding: 18px 16px;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
a.other-course-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--color-primary);
  text-decoration: none;
}
.other-course-card__count {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-gold-dark);
  letter-spacing: 0.04em;
}
.other-course-card__title {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 0.95rem + 1vw, 1.45rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin: 0;
  line-height: 1.35;
}
.other-course-card__summary {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (max-width: 420px) {
  .other-courses { gap: 10px; max-width: 100%; }
  .other-course-card { padding: 12px 10px; }
  .other-course-card__summary { -webkit-line-clamp: 3; font-size: 0.8rem; }
}

.reiki-related {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  max-width: 840px;
  margin: 0 auto;
}
.reiki-related-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  aspect-ratio: 1 / 1;
  width: 100%;
  padding: 18px 14px;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
a.reiki-related-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--color-primary);
  text-decoration: none;
}
.reiki-related-card__zh {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 0.95rem + 1.4vw, 1.65rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.35;
}
.reiki-related-card__en {
  font-size: clamp(0.95rem, 0.85rem + 0.5vw, 1.1rem);
  color: var(--color-text-muted);
}
@media (max-width: 720px) {
  .reiki-related {
    grid-template-columns: 1fr;
    max-width: 100%;
    gap: 10px;
  }
  .reiki-related-card {
    aspect-ratio: auto;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
  }
  .reiki-related-card__zh {
    font-size: 1.1rem;
    text-align: left;
  }
  .reiki-related-card__en {
    font-size: 0.85rem;
    text-align: right;
    flex-shrink: 0;
  }
}

/* ---------------- Sections ---------------- */
.section { padding: 56px 0; }
.section--alt { background: var(--color-bg-alt); }
.section__head { text-align: center; max-width: 640px; margin: 0 auto 2.2rem; }
.section__head p { color: var(--color-text-muted); }

/* ---------------- Cards / course grid ---------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
}
.card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
.card__category {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.card__title { font-size: 1.15rem; margin-bottom: 8px; }
.card__summary {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__meta {
  margin: 14px 0;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  font-size: 0.88rem;
  color: var(--color-text);
}
.card__meta div + div { margin-top: 4px; }
.card__price { font-weight: 700; color: var(--color-primary-dark); }
.card__cta { align-self: flex-start; }

/* ---------------- Course detail ---------------- */
.course-detail__meta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 1.4rem 0;
}
.course-detail__meta dt { font-weight: 700; color: var(--color-primary-dark); margin-top: 10px; }
.course-detail__meta dt:first-child { margin-top: 0; }
.course-detail__meta dd { margin: 2px 0 0; color: var(--color-text); }

/* ---------------- FAQ accordion (kept from current AIO work) ---------------- */
.faq-accordion { display: flex; flex-direction: column; gap: 0.65rem; margin: 1.2rem 0; }
.faq-accordion details {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 8px;
  overflow: hidden;
}
.faq-accordion summary {
  list-style: none;
  cursor: pointer;
  color: var(--color-primary-dark);
  font-weight: 700;
  padding: 0.75rem 2.2rem 0.75rem 0.95rem;
  position: relative;
}
.faq-accordion summary::-webkit-details-marker { display: none; }
.faq-accordion summary::after {
  content: "+";
  position: absolute;
  right: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  font-weight: 700;
}
.faq-accordion details[open] summary::after { content: "\2212"; }
.faq-accordion .faq-answer { margin: 0; padding: 0 0.95rem 0.85rem; color: var(--color-text-muted); }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--color-primary-dark);
  color: #F3E7DE;
  margin-top: 56px;
}
.site-footer .container {
  padding: 44px 20px 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 28px;
}
.site-footer h4 { color: #fff; font-family: var(--font-body); font-size: 1rem; }
.site-footer a { color: #F3E7DE; }
.site-footer a:hover { color: var(--color-gold); }
.site-footer__bottom {
  text-align: center;
  font-size: 0.82rem;
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.15);
  color: #D9C7B8;
}

/* ---------------- Utility ---------------- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 90;
}
.back-to-top.is-visible { opacity: 1; pointer-events: auto; }