/* =====================================================
   styles.css — IDF Kenya v4.2
   Global tokens, navbar, footer, base reset.
   No media queries — all responsive rules in responsive.css.
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600;9..40,700&display=swap');


/* =====================================================
   DESIGN TOKENS
   ===================================================== */
:root {
  /* Brand Colors */
  --idf-navy:           #1B2E4B;
  --idf-navy-dark:      #0f1e33;
  --idf-navy-light:     #2a4470;
  --idf-blue:           #2E6DB4;
  --idf-blue-light:     #5B9BD5;
  --idf-blue-pale:      #EBF3FB;
  --idf-green:          #3A7D44;
  --idf-green-light:    #52a85f;
  --idf-green-pale:     #EAF4EB;
  --idf-cream:          #F8FAFF;
  --idf-white:          #FFFFFF;

  /* Typography */
  --font-display:       'Playfair Display', Georgia, serif;
  --font-serif:         'Playfair Display', Georgia, serif;
  --font-sans:          'DM Sans', system-ui, sans-serif;
  --font-body:          'DM Sans', system-ui, sans-serif;

  /* Header */
  --header-height:      5.5rem;
  --header-scrolled:    4rem;
  --header-z:           1000;
  --navbar-height:      72px;

  --logo-width-desktop: 170px;
  --logo-height-desktop: 50px;
  --logo-width-tablet:  130px;
  --logo-height-tablet: 40px;

  /* Container */
  --container-max:      1280px;
  --container-pad:      clamp(1.5rem, 5vw, 3rem);

  /* Spacing */
  --section-gap:        72px;
  --section-gap-sm:     48px;

  /* Border radius */
  --r-sm:   4px;
  --r-md:   10px;
  --r-lg:   18px;
  --r-xl:   28px;
  --r-2xl:  40px;

  /* Shadows */
  --idf-shadow-sm: 0 2px 10px rgba(27, 46, 75, 0.07);
  --idf-shadow-md: 0 8px 30px rgba(27, 46, 75, 0.13);
  --idf-shadow-lg: 0 20px 60px rgba(27, 46, 75, 0.18);
  --idf-shadow-xl: 0 32px 80px rgba(27, 46, 75, 0.26);

  /* Borders & Text */
  --idf-border:    rgba(27, 46, 75, 0.10);
  --idf-text:      #1a1a2e;
  --idf-text-mid:  #3d4560;
  --idf-text-muted:#6b7280;

  /* Easing */
  --ease-out-expo:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-circ: cubic-bezier(0.85, 0, 0.15, 1);
  --transition-fast:  0.25s var(--ease-out-expo);
  --transition-mid:   0.4s  var(--ease-out-expo);
  --transition-slow:  0.6s  var(--ease-out-expo);

  /* Footer */
  --footer-bg:         var(--idf-navy-dark);
  --footer-text-mid:   rgba(255, 255, 255, 0.65);
  --footer-text-light: rgba(255, 255, 255, 0.45);
  --footer-border:     rgba(255, 255, 255, 0.08);
  --footer-hover:      var(--idf-white);

  /* Sidenav */
  --sidenav-width: 240px;
}


/* =====================================================
   RESET & BASE
   ===================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--idf-text-mid);
  background: #fff;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--idf-text);
  line-height: 1.2;
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem);    font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3vw, 2.8rem);  font-weight: 600; }
h3 { font-size: clamp(1.1rem, 2vw, 1.45rem); font-weight: 600; }

p            { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
img          { display: block; max-width: 100%; }
a            { color: inherit; text-decoration: none; transition: color 0.25s; }
ul           { list-style: none; }


/* =====================================================
   UTILITY CLASSES
   ===================================================== */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

*:focus-visible {
  outline: 2px solid var(--idf-green);
  outline-offset: 4px;
  border-radius: 2px;
}


/* =====================================================
   HEADER / NAVBAR — PREMIUM GLASS
   ===================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: var(--header-z);
  background-color: rgba(255, 255, 255, 0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: all var(--transition-slow);
  padding: 1.25rem 0;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.85) !important;
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  padding: 0.75rem 0;
  box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}


/* =====================================================
   LOGO
   ===================================================== */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.logo:hover { opacity: 0.9; }

.logo:focus-visible {
  outline: 2px solid var(--idf-blue-light);
  outline-offset: 6px;
  border-radius: 4px;
}

.logo__picture { display: flex; align-items: center; }

.logo__img {
  width: var(--logo-width-desktop);
  height: var(--logo-height-desktop);
  display: block;
  object-fit: contain;
  transition: all var(--transition-slow);
  filter: brightness(0) invert(1);
}

.site-header.is-scrolled .logo__img {
  width: calc(var(--logo-width-desktop) * 0.85);
  height: calc(var(--logo-height-desktop) * 0.85);
  filter: none;
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo__primary {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--idf-white) !important;
  letter-spacing: -0.01em;
  transition: all var(--transition-slow);
}

.logo__full {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9) !important;
  letter-spacing: 0.03em;
  white-space: nowrap;
  transition: all var(--transition-slow);
  margin-top: 0.15rem;
}

.logo__tagline {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--idf-green-light);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all var(--transition-slow);
  margin-top: 0.1rem;
}

.site-header.is-scrolled .logo__primary { color: var(--idf-navy) !important; font-size: 1.05rem; }
.site-header.is-scrolled .logo__full    { color: var(--idf-navy) !important; font-size: 0.65rem; }
.site-header.is-scrolled .logo__tagline { color: var(--idf-green); }

.logo__fallback { display: none; flex-direction: column; gap: 0.15rem; }
.logo--img-error .logo__img { display: none; }
.logo--img-error .logo__fallback { display: flex; }
.logo__fallback-primary {
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 700;
  color: inherit; letter-spacing: -0.01em;
}
.logo__accent { color: var(--idf-green); }
.logo__fallback-tag {
  font-family: var(--font-sans); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.7);
}


/* =====================================================
   DESKTOP NAVIGATION
   ===================================================== */
.desktop-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.desktop-nav__list {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
  margin: 0; padding: 0;
}

.nav-link {
  position: relative;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--idf-white) !important;
  text-decoration: none;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
  cursor: pointer;
}

.site-header.is-scrolled .nav-link { color: var(--idf-navy) !important; }

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 1px;
  background: var(--idf-green-light);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.4s var(--ease-out-expo);
}

.site-header.is-scrolled .nav-link::after { background: var(--idf-green); }

.nav-link:hover::after,
.nav-link.is-active::after { transform: scaleX(1); transform-origin: left center; }

.nav-link:hover,
.nav-link.is-active { color: var(--idf-white) !important; }

.site-header.is-scrolled .nav-link:hover,
.site-header.is-scrolled .nav-link.is-active { color: var(--idf-green) !important; }

.nav-link:focus-visible {
  outline: 2px solid var(--idf-green);
  outline-offset: 4px;
  border-radius: 2px;
}


/* =====================================================
   HAMBURGER BUTTON
   ===================================================== */
.hamburger-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  color: var(--idf-white);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.hamburger-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.4);
}

.site-header.is-scrolled .hamburger-btn { color: var(--idf-navy); border-color: rgba(0,0,0,0.1); }
.site-header.is-scrolled .hamburger-btn:hover { background: rgba(0,0,0,0.04); border-color: rgba(0,0,0,0.2); }

.hamburger-btn[aria-expanded="true"] {
  background: var(--idf-green);
  border-color: var(--idf-green);
  color: var(--idf-white) !important;
}

.hamburger-line {
  transition: transform 0.4s var(--ease-out-expo), opacity 0.3s ease;
  transform-origin: center;
}

.hamburger-btn[aria-expanded="true"] .hamburger-line--top    { transform: translateY(5px) rotate(45deg); }
.hamburger-btn[aria-expanded="true"] .hamburger-line--mid    { opacity: 0; transform: scaleX(0); }
.hamburger-btn[aria-expanded="true"] .hamburger-line--bottom { transform: translateY(-5px) rotate(-45deg); }


/* =====================================================
   MOBILE DRAWER
   ===================================================== */
.mobile-drawer {
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: rgba(255, 255, 255, 0.98) !important;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  opacity: 0;
  transition: max-height 0.5s var(--ease-out-expo), opacity 0.4s ease, visibility 0.5s;
  isolation: isolate;
  z-index: calc(var(--header-z) - 1);
  -webkit-overflow-scrolling: touch;
}

.mobile-drawer.is-open {
  max-height: 85vh;
  opacity: 1;
  visibility: visible;
  overflow-y: auto;
}

.mobile-nav-container {
  padding: 1.5rem var(--container-pad);
  display: flex;
  flex-direction: column;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--idf-navy) !important;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  transition: transform var(--transition-fast), color var(--transition-fast);
  min-height: 52px;
}

.mobile-nav-link:last-child    { border-bottom: none; }
.mobile-nav-link:hover         { color: var(--idf-green) !important; transform: translateX(8px); }
.mobile-nav-link.is-active     { color: var(--idf-green) !important; font-weight: 600; }

.mobile-nav-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: transparent;
  transition: background var(--transition-fast);
}

.mobile-nav-link.is-active .mobile-nav-dot { background: var(--idf-green); }


/* =====================================================
   FOOTER
   ===================================================== */
.site-footer {
  background: var(--footer-bg);
  font-family: var(--font-sans);
  position: relative;
  margin-top: auto;
  color: var(--idf-white);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.5fr 1fr 1.5fr 1fr;
  gap: 4rem 3rem;
  padding: 5rem 0 4rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 320px;
}

.footer-logo-link { display: inline-flex; text-decoration: none; }

.footer-logo__img {
  width: 170px; height: auto; opacity: 0.95;
  transition: opacity var(--transition-fast);
}
.footer-logo-link:hover .footer-logo__img { opacity: 1; }

.footer-tagline {
  font-size: 0.9375rem; line-height: 1.7;
  color: var(--footer-text-mid); margin: 0; font-weight: 300;
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--idf-white); margin: 0 0 1.5rem 0;
}

.footer-nav-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 1rem;
}

.footer-link,
.social-link {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--footer-text-mid);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex; align-items: center;
  font-weight: 400;
}

.footer-link:hover,
.social-link:hover { color: var(--footer-hover); transform: translateX(4px); }

.footer-link--contact {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.875rem; color: var(--footer-text-mid);
  text-decoration: none; transition: color var(--transition-fast);
}
.footer-link--contact:hover { color: var(--footer-hover); }
.footer-link__text { line-height: 1.4; }

.footer-address {
  font-style: normal;
  display: flex; flex-direction: column; gap: 1rem;
}

.footer-address-text {
  font-size: 0.9375rem;
  color: var(--footer-text-light);
  margin-top: 0.5rem;
}

.social-links {
  display: flex; flex-direction: column;
  gap: 1rem; margin-bottom: 2.5rem;
}

.social-link { gap: 0.75rem; padding: 0.5rem 0; }
.social-link svg { flex-shrink: 0; }
.social-link-label { line-height: 1; }

.back-to-top {
  display: inline-flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--footer-border);
  border-radius: 40px;
  color: var(--footer-text-mid);
  font-family: var(--font-sans);
  font-size: 0.8125rem; font-weight: 500;
  cursor: pointer; transition: all var(--transition-fast);
  width: fit-content;
}

.back-to-top:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--idf-white);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.back-to-top__icon { transition: transform var(--transition-fast); }
.back-to-top:hover .back-to-top__icon { transform: translateY(-2px); }

.footer-bottom {
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 2rem 0;
  border-top: 1px solid var(--footer-border);
  font-size: 0.8125rem;
  color: var(--footer-text-light);
}

.footer-bottom-left {
  display: flex; align-items: center;
  gap: 1.5rem; flex-wrap: wrap;
}

.footer-legal-links {
  display: flex; align-items: center; gap: 1rem;
}

.footer-legal-link {
  color: var(--footer-text-light); text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-legal-link:hover { color: var(--footer-hover); }
.footer-separator        { color: rgba(255,255,255,0.2); }
.footer-bottom-right     { margin: 0; font-weight: 300; }

.component-fallback {
  padding: 2rem; text-align: center;
  background: var(--idf-cream); border: 1px solid #ddd; margin: 1rem;
}
.component-fallback a { color: var(--idf-green); text-decoration: none; }
.component-fallback a:hover { text-decoration: underline; }