/* ============================================================
   KRB Swimming — Landing Page
   CSS Custom Properties + Component Styles
   Bootstrap 5.3 + Playfair Display (Arpona substitute) + Inter
   ============================================================ */

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  /* Colors */
  --color-navy:              #003261;
  --color-navy-dark:         #041633;
  --color-red:               #ff3621;
  --color-blue:              #00bfd9;
  --color-charcoal:          #2d2d2d;
  --color-white:             #ffffff;
  --color-sand:              #f7efde;
  --primary-sand-stone:      var(--color-sand);
  --color-sandstone-light:   #f7f4ed;
  --color-sandstone-50:      #fbf7ef;
  --color-cyan-tint:         #ebfafb;

  /* Typography */
  --font-display:   'Playfair Display', Georgia, serif;
  --font-button:    'Arpona', 'Playfair Display', Georgia, serif;
  --font-body:      'Inter', system-ui, sans-serif;

  --fs-xs:    0.8125rem;   /* 13px */
  --fs-sm:    0.875rem;    /* 14px */
  --fs-base:  1rem;        /* 16px */
  --fs-md:    1.125rem;    /* 18px */
  --fs-lg:    1.25rem;     /* 20px */
  --fs-xl:    1.5rem;      /* 24px */
  --fs-2xl:   2rem;        /* 32px */
  --fs-3xl:   2.5rem;      /* 40px */
  --fs-4xl:   3rem;        /* 48px */
  --fs-hero:  4.6875rem;   /* 75px */

  /* Letter spacing */
  --ls-label:  0.0875rem;  /* 1.4px */
  --ls-tight:  -0.09rem;   /* -1.44px */

  /* Spacing (8px system) */
  --sp-1:   0.3125rem;  /* 5px */
  --sp-2:   0.625rem;   /* 10px */
  --sp-3:   0.9375rem;  /* 15px */
  --sp-4:   1.25rem;    /* 20px */
  --sp-5:   1.5rem;     /* 24px */
  --sp-6:   1.5625rem;  /* 25px */
  --sp-7:   2rem;       /* 32px */
  --sp-8:   2.5rem;     /* 40px */
  --sp-9:   2.8125rem;  /* 45px */
  --sp-10:  3.125rem;   /* 50px */
  --sp-12:  4.375rem;   /* 70px */
  --sp-14:  5rem;       /* 80px */
  --sp-16:  5.625rem;   /* 90px */
  --sp-18:  6.25rem;    /* 100px */

  /* Border radius */
  --radius-xs:  0.3125rem;  /* 5px */
  --radius-sm:  0.625rem;   /* 10px */
  --radius-md:  0.25rem;    /* ~4px (buttons) */
  --radius-full: 50%;

  /* Transitions */
  --transition: 0.2s ease;
}

/* ── Base Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-charcoal);
  background-color: var(--color-white);
  line-height: 1.4;
  margin: 0;
}

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

/* ── Typography Helpers ─────────────────────────────────────── */
.font-display         { font-family: var(--font-display); }
.font-display-light   { font-family: var(--font-display); font-weight: 300; }
.font-display-semi    { font-family: var(--font-display); font-weight: 600; }

.text-navy    { color: var(--color-navy)    !important; }
.text-blue    { color: var(--color-blue)    !important; }
.text-red     { color: var(--color-red)     !important; }
.text-white   { color: var(--color-white)   !important; }
.text-charcoal{ color: var(--color-charcoal)!important; }

.label-caps {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn-krb {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  height: 3.25rem;         /* 52px */
  padding: 0.9375rem 1.5625rem;
  font-family: var(--font-button);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 0.065rem solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--transition), background-color var(--transition);
  line-height: 1;
}

.btn-krb:hover { opacity: 0.88; }

.btn-solid-red {
  background-color: var(--color-red);
  border-color: var(--color-red);
  color: var(--color-white);
}

.btn-solid-sand {
  background-color: var(--color-sand);
  border-color: var(--color-sand);
  color: var(--color-navy);
}

.btn-outline-navy {
  background-color: transparent;
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.btn-outline-white {
  background-color: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-krb-lg {
  height: 3.8125rem;   /* 61px */
  padding: 1.25rem 1.5625rem;
}

/* ── Section Containers ─────────────────────────────────────── */
.section-inner {
  max-width: 90rem; /* 1440px */
  margin: 0 auto;
}

/* ── ① HERO SECTION ─────────────────────────────────────────── */
.hero {
  position: relative;
  height: 59.375rem; /* 950px */
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4,22,51,0.4) 0%, rgba(4,22,51,0) 22%),
    linear-gradient(180deg, rgba(4,22,51,0) 41%, rgba(4,22,51,1) 100%);
}

.diagonal-lines {
  --diagonal-lines-x: 0rem;
  --diagonal-lines-y: 0rem;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: translate(var(--diagonal-lines-x), var(--diagonal-lines-y));
  color: var(--primary-sand-stone, #F7EFDE);
  overflow: visible;
  pointer-events: none;
  z-index: 1;
}

.diagonal-lines path {
  stroke: var(--primary-sand-stone, #F7EFDE);
  stroke-width: 2px;
  vector-effect: non-scaling-stroke;
}

.diagonal-lines__svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.diagonal-lines--hero {
  --diagonal-lines-x: 0rem;
  --diagonal-lines-y: 0rem;
}

.diagonal-lines--footer {
  --diagonal-lines-x: 0rem;
  --diagonal-lines-y: 0rem;
}

.hero__logo {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 10.875rem; /* 174px */
  height: 9.75rem;  /* 156px */
  z-index: 2;
}

.hero__logo-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__logo img {
  position: relative;
  z-index: 1;
  width: 8.375rem;  /* 134px */
  margin: 1.9375rem auto 0;
}

.hero__content {
  position: absolute;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  text-align: center;
  z-index: 2;
  padding: 0 var(--sp-4);
}

.hero__eyebrow {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 0.625rem;
}

.hero__headline {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(3rem, 5.2vw, var(--fs-hero));
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--color-white);
  margin-bottom: 1rem;
  max-width: 61rem;
  margin-left: auto;
  margin-right: auto;
}

.hero__sub {
  font-size: var(--fs-base);
  color: var(--color-white);
  line-height: 1.4;
  max-width: 44.8125rem;
  margin: 0 auto var(--sp-4);
}

.hero__ctas {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── ② ACCREDITATIONS BAR ───────────────────────────────────── */
.accreditations {
  background-color: var(--color-navy-dark);
  padding: 3.125rem var(--sp-16);
}

.accreditations__label {
  color: var(--color-blue);
  margin-bottom: 1.6875rem;
}

.accreditations__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.36106rem;
  flex-wrap: wrap;
}

.accreditations__logos img {
  height: 4rem;
  width: auto;
  object-fit: contain;
}

/* ── ③ INTRO SPLIT (AUSTSWIM Award) ─────────────────────────── */
.intro-split {
  background-color: var(--color-sandstone-light);
}

.intro-split__image {
  position: relative;
  min-height: 40.375rem; /* 646px */
  overflow: hidden;
}

.intro-split__image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro-split__content {
  background-color: var(--color-sandstone-light);
  padding: var(--sp-16);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--sp-4);
}

.intro-split__heading {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 2.8vw, var(--fs-3xl));
  line-height: 1.1;
  letter-spacing: var(--ls-tight);
  color: var(--color-navy);
  margin-bottom: 0;
}

.intro-split__body {
  font-size: var(--fs-base);
  color: var(--color-charcoal);
  line-height: 1.4;
}

.intro-split__body p + p { margin-top: 1rem; }

/* ── ④ WHY CHOOSE ───────────────────────────────────────────── */
.why-choose {
  background-color: var(--color-white);
  padding: var(--sp-16);
}

.why-choose__header { margin-bottom: var(--sp-8); }

.why-choose__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.3vw, var(--fs-4xl));
  line-height: 1.1;
  letter-spacing: var(--ls-tight);
  color: var(--color-navy);
  margin-bottom: 1.0625rem;
}

.why-choose__subtitle {
  font-size: var(--fs-lg);
  color: var(--color-charcoal);
  line-height: 1.4;
  letter-spacing: -0.0125rem;
}

/* Feature card */
.feature-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.feature-item__icon-wrap {
  background-color: var(--color-cyan-tint);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.125rem;
  height: 4.125rem;
}

.feature-item__icon-wrap i {
  font-size: 2.5rem;
  color: var(--color-blue);
  line-height: 1;
}

.feature-item__title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-lg);
  line-height: 1.3;
  letter-spacing: -0.0375rem;
  color: var(--color-navy);
  margin-bottom: 0.3125rem;
}

.feature-item__text {
  font-size: var(--fs-base);
  color: var(--color-charcoal);
  line-height: 1.4;
}

/* ── ⑤ PROGRAMS SPLIT ───────────────────────────────────────── */
.programs-split { display: flex; }

.program-card {
  flex: 0 0 50%;
  display: flex;
  flex-direction: column;
}

.program-card--lts  { background-color: var(--color-white); }
.program-card--squad { background-color: var(--color-sandstone-50); }

.program-card__image {
  height: 30rem; /* 480px */
  overflow: hidden;
  position: relative;
}

.program-card__image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.program-card__body {
  padding: 2.8125rem var(--sp-16) var(--sp-16);
  display: flex;
  flex-direction: column;
  gap: 1.875rem;
  flex: 1;
}

.program-card__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.3vw, var(--fs-4xl));
  line-height: 1.1;
  letter-spacing: var(--ls-tight);
  color: var(--color-navy);
  margin-bottom: 0.25rem;
}

.program-card__subtitle {
  font-size: var(--fs-lg);
  color: var(--color-navy);
  line-height: 1.4;
  letter-spacing: -0.0125rem;
}

.program-card__text {
  font-size: var(--fs-base);
  color: var(--color-charcoal);
  line-height: 1.4;
}

.program-highlights__label {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-md);
  color: var(--color-navy);
  line-height: 1.4;
  margin-bottom: 0.625rem;
}

.bullet-list { list-style: none; padding: 0; margin: 0; }

.bullet-list__item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.625rem 0;
  border-top: 0.0625rem solid rgba(0,50,97,0.12);
  font-size: var(--fs-base);
  color: var(--color-navy);
  letter-spacing: -0.03rem;
  line-height: normal;
}

.bullet-list__item i {
  font-size: 1.5rem;
  color: var(--color-blue);
  width: 1.875rem;
  text-align: center;
  flex-shrink: 0;
}

/* ── ⑥ BOOK AN ASSESSMENT ───────────────────────────────────── */
.assessment {
  display: flex;
  min-height: 41.25rem; /* 660px */
}

.assessment__image {
  flex: 0 0 50%;
  position: relative;
  overflow: hidden;
}

.assessment__image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.assessment__content {
  flex: 0 0 50%;
  background-color: var(--color-sandstone-light);
  padding: var(--sp-16);
  display: flex;
  align-items: center;
  justify-content: center;
}

.assessment__inner {
  max-width: 29.5625rem; /* 473px */
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

.assessment__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.3vw, var(--fs-4xl));
  line-height: 1.1;
  letter-spacing: var(--ls-tight);
  color: var(--color-navy);
  margin-bottom: 1.25rem;
}

.assessment__tagline {
  font-size: var(--fs-lg);
  color: var(--color-navy);
  line-height: 1.4;
  letter-spacing: -0.0125rem;
  margin-bottom: 1.25rem;
}

.assessment__body {
  font-size: var(--fs-base);
  color: var(--color-charcoal);
  line-height: 1.4;
}

.assessment__body p + p { margin-top: 1rem; }

/* ── ⑦ FAQ SECTION ──────────────────────────────────────────── */
.faq-section {
  background-color: var(--color-white);
  padding: var(--sp-18) 0.5rem;
  text-align: center;
}

.faq-section__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.3vw, var(--fs-4xl));
  line-height: normal;
  letter-spacing: var(--ls-tight);
  color: var(--color-navy);
  margin-bottom: 2.5rem;
}

.faq-list {
  max-width: 38.625rem; /* 618px */
  margin: 0 auto var(--sp-8);
  text-align: left;
}

.faq-item {
  border-top: 0.0625rem solid rgba(0,50,97,0.15);
}

.faq-item:last-child { border-bottom: 0.0625rem solid rgba(0,50,97,0.15); }

.faq-item__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  width: 100%;
  padding: 1.25rem 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 400;
  color: var(--color-navy);
  line-height: 1.4;
}

.faq-item__btn i {
  color: var(--color-blue);
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item__btn[aria-expanded="true"] i { transform: rotate(180deg); }

.faq-item__body {
  font-size: var(--fs-base);
  color: var(--color-charcoal);
  line-height: 1.4;
  padding-bottom: 1.25rem;
  display: none;
}

.faq-item__body.open { display: block; }

/* ── ⑧ ENQUIRE FORM ─────────────────────────────────────────── */
.enquire-section {
  position: relative;
  padding: 8.6875rem 0;
  overflow: hidden;
}

.enquire-section__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(1.25rem);
  transform: scale(1.06);
}

.enquire-section__card {
  position: relative;
  z-index: 2;
  background-color: var(--color-white);
  border-radius: var(--radius-sm);
  padding: var(--sp-18);
  max-width: 56.875rem; /* 910px */
  margin: 0 auto;
}

.enquire-section__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.3vw, var(--fs-4xl));
  line-height: 1;
  letter-spacing: var(--ls-tight);
  color: var(--color-navy);
  text-align: center;
  margin-bottom: 0;
}

.enquire-section__sub {
  font-size: var(--fs-base);
  color: var(--color-navy);
  text-align: center;
  line-height: 1.4;
}

/* Form inputs */
.form-label-krb {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: 0.0406rem;
  text-transform: uppercase;
  color: var(--color-navy);
  line-height: 1.15;
  margin-bottom: 0.3125rem;
}

.form-control-krb {
  display: block;
  width: 100%;
  background-color: var(--color-sandstone-light);
  border: none;
  border-radius: var(--radius-xs);
  padding: 0.9375rem 1.25rem;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-charcoal);
  line-height: 1.15;
  outline: none;
  transition: box-shadow var(--transition);
}

.form-control-krb:focus {
  box-shadow: 0 0 0 0.1875rem rgba(0, 191, 217, 0.35);
}

.form-control-krb::placeholder { color: var(--color-charcoal); opacity: 0.7; }

textarea.form-control-krb {
  resize: vertical;
  min-height: 10rem;
}

/* ── ⑨ INSTAGRAM FEED ───────────────────────────────────────── */
.instagram-section {
  background-color: var(--color-sandstone-light);
  padding: 5rem 5rem 0;
}

.instagram-section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.5625rem;
}

.instagram-section__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.3vw, var(--fs-4xl));
  line-height: 1.1;
  letter-spacing: var(--ls-tight);
  color: var(--color-navy);
  margin-bottom: 0;
}

.instagram-section__link {
  display: flex;
  align-items: center;
  gap: 0.3125rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-md);
  color: var(--color-navy);
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}

.instagram-section__link i { color: var(--color-blue); }
.instagram-section__link:hover { color: var(--color-blue); }

.instagram-grid {
  display: flex;
  overflow: hidden;
}

.instagram-tile {
  flex: 0 0 20%;
  aspect-ratio: 310/387;
  position: relative;
  overflow: hidden;
}

.instagram-tile img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.instagram-tile:hover img { transform: scale(1.04); }

.instagram-tile__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(48deg, rgba(0,0,0,0) 76%, rgba(0,0,0,0.2) 100%);
  pointer-events: none;
}

.instagram-tile__icon {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-size: 1.5rem;
  color: var(--color-white);
}

/* ── ⑩ FOOTER ───────────────────────────────────────────────── */
.site-footer {
  position: relative;
  overflow: hidden;
  background-color: var(--color-navy-dark);
  padding: 3.8975rem var(--sp-16) 0;
  text-align: center;
  color: var(--color-white);
}

.site-footer > :not(.diagonal-lines) {
  position: relative;
  z-index: 1;
}

.site-footer__logo {
  width: 9.1875rem; /* 147px */
  margin: 0 auto var(--sp-10);
}

.site-footer__partner-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 3.625rem;
}

.site-footer__partner-logos img {
  height: 4.5rem;
  width: auto;
  object-fit: contain;
}

.footer-nav-section { margin-bottom: 1.5625rem; }

.footer-nav-section__label {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 0.3125rem;
}

.footer-nav-section__links {
  font-size: var(--fs-base);
  color: var(--color-blue);
  line-height: 1.4;
}

.footer-nav-section__links a {
  color: var(--color-blue);
  text-decoration: none;
}

.footer-nav-section__links a:hover { text-decoration: underline; }

.footer-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.9375rem;
  margin-bottom: var(--sp-10);
}

.footer-social a {
  font-size: 1.5rem;
  color: var(--color-blue);
  text-decoration: none;
  transition: opacity var(--transition);
}

.footer-social a:hover { opacity: 0.75; }

.footer-social__handle {
  font-size: var(--fs-base);
  color: var(--color-blue);
  line-height: 1.4;
}

.site-footer__copyright {
  font-size: var(--fs-base);
  color: var(--color-white);
  line-height: 1.4;
  padding: 1.375rem 0 2.5rem;
  border-top: 0.0625rem solid rgba(255,255,255,0.1);
  margin-top: 1.25rem;
}

/* ── Responsiveness ─────────────────────────────────────────── */
@media (max-width: 991.98px) {
  /* Hero */
  .hero { height: auto; min-height: 37.5rem; padding-bottom: 4rem; }
  .hero__headline { font-size: clamp(2.25rem, 7vw, 3.75rem); }

  /* Split sections */
  .intro-split .row > div { flex: 0 0 100%; max-width: 100%; }
  .intro-split__image { min-height: 22rem; }

  /* Programs */
  .programs-split { flex-direction: column; }
  .program-card { flex: 0 0 100%; }

  /* Assessment */
  .assessment { flex-direction: column; }
  .assessment__image { flex: 0 0 18rem; }
  .assessment__content { flex: unset; padding: var(--sp-10) var(--sp-8); }

  /* Instagram */
  .instagram-section { padding: 3rem 1rem 0; }
  .instagram-grid { flex-wrap: wrap; }
  .instagram-tile { flex: 0 0 50%; }

  /* Footer */
  .site-footer { padding: 3rem var(--sp-8) 0; }
}

@media (max-width: 575.98px) {
  .why-choose { padding: var(--sp-10) var(--sp-6); }
  .accreditations { padding: 2.5rem var(--sp-6); }
  .intro-split__content { padding: var(--sp-10) var(--sp-6); }
  .program-card__body { padding: 2rem var(--sp-6) var(--sp-10); }
  .assessment__content { padding: var(--sp-10) var(--sp-6); }
  .enquire-section { padding: 3rem 1rem; }
  .enquire-section__card { padding: var(--sp-10) var(--sp-6); }
  .instagram-tile { flex: 0 0 100%; }
  .instagram-section__header { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .hero__ctas { flex-direction: column; align-items: center; }
}