/* ==========================================================================
   Tabuk PharmaEdge — Design System
   theme.css : tokens, reset, typography, layout, shared components
   Brand: Tabuk navy (#05344d / #004b73) + Tabuk green (#5aaa42)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand — navy */
  --navy-900: #042536;
  --navy-800: #05344d;
  --navy-700: #044262;
  --navy-600: #004b73;
  --navy-500: #0a6291;
  --navy-400: #2f83ad;
  --navy-300: #7fb3ce;
  --navy-200: #c3ddeb;
  --navy-100: #e4f0f6;
  --navy-50:  #f3f9fc;

  /* Brand — green */
  --green-800: #2f7523;
  --green-700: #3d8a2e;
  --green-600: #459334;
  --green-500: #5aaa42;
  --green-400: #7cc45f;
  --green-300: #a8db93;
  --green-100: #e5f4dd;
  --green-50:  #f3faef;

  /* Supporting accent (pulled from the programme artwork) */
  --teal-500: #0d92b8;
  --teal-400: #35b0d1;
  --teal-100: #dff2f8;

  /* Neutrals */
  --ink-900: #0d1b24;
  --ink-800: #17303e;
  --ink-700: #2c4655;
  --ink-600: #4a6473;
  --ink-500: #6b8391;
  --ink-400: #8fa4af;
  --ink-300: #b9c8d1;
  --ink-200: #dbe4ea;
  --ink-100: #eef3f6;
  --ink-50:  #f7fafb;
  --white:   #ffffff;

  /* Semantic surfaces */
  --surface: var(--white);
  --surface-muted: var(--navy-50);
  --surface-soft: var(--ink-50);
  --line: rgba(5, 52, 77, 0.09);
  --line-strong: rgba(5, 52, 77, 0.16);

  /* Gradients */
  --grad-brand: linear-gradient(120deg, var(--navy-800) 0%, var(--navy-600) 45%, var(--teal-500) 100%);
  --grad-green: linear-gradient(120deg, var(--green-600) 0%, var(--green-500) 55%, var(--green-400) 100%);
  --grad-soft: linear-gradient(140deg, var(--navy-50) 0%, var(--green-50) 100%);
  --grad-line: linear-gradient(90deg, transparent, var(--green-500), var(--teal-500), transparent);

  /* Typography */
  --font-display: 'Plus Jakarta Sans', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;

  --fs-display: clamp(2.35rem, 1.35rem + 3.4vw, 4rem);
  --fs-h1: clamp(2rem, 1.3rem + 2.6vw, 3.25rem);
  --fs-h2: clamp(1.7rem, 1.2rem + 1.9vw, 2.6rem);
  --fs-h3: clamp(1.25rem, 1.08rem + 0.7vw, 1.6rem);
  --fs-h4: clamp(1.05rem, 0.99rem + 0.3vw, 1.2rem);
  --fs-lead: clamp(1.02rem, 0.96rem + 0.35vw, 1.2rem);
  --fs-body: 1rem;
  --fs-sm: 0.9rem;
  --fs-xs: 0.8rem;

  /* Radii */
  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 26px;
  --r-xl: 34px;
  --r-full: 999px;

  /* Elevation — layered, low-opacity, brand-tinted */
  --shadow-xs: 0 1px 2px rgba(5, 52, 77, 0.05);
  --shadow-sm: 0 2px 6px rgba(5, 52, 77, 0.05), 0 1px 2px rgba(5, 52, 77, 0.04);
  --shadow-md: 0 10px 24px -12px rgba(5, 52, 77, 0.18), 0 3px 8px rgba(5, 52, 77, 0.05);
  --shadow-lg: 0 24px 50px -22px rgba(5, 52, 77, 0.30), 0 6px 16px rgba(5, 52, 77, 0.06);
  --shadow-xl: 0 42px 90px -40px rgba(4, 37, 54, 0.45), 0 10px 26px rgba(5, 52, 77, 0.08);
  --shadow-green: 0 14px 30px -12px rgba(90, 170, 66, 0.55);

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
  --t-fast: 0.18s;
  --t-base: 0.32s;
  --t-slow: 0.6s;

  /* Layout */
  --container: 1200px;
  --container-wide: 1340px;
  --gutter: clamp(1rem, 0.55rem + 2vw, 2rem);
  --section-y: clamp(3.25rem, 2.2rem + 2.6vw, 5rem);
  --header-h: 86px;   /* re-measured at runtime by site.js */
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--ink-700);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--navy-800);
  line-height: 1.18;
  letter-spacing: -0.018em;
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); font-weight: 800; }
h2 { font-size: var(--fs-h2); font-weight: 800; }
h3 { font-size: var(--fs-h3); font-weight: 800; }
h4 { font-size: var(--fs-h4); font-weight: 700; }

p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
img, svg, video { max-width: 100%; display: block; }
img { height: auto; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
strong, b { color: var(--navy-800); font-weight: 700; }
::selection { background: var(--green-100); color: var(--navy-800); }

:focus-visible {
  outline: 3px solid var(--green-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute; top: -100px; left: 16px; z-index: 100000;
  background: var(--navy-800); color: var(--white);
  padding: 12px 20px; border-radius: var(--r-sm); font-weight: 700;
  transition: top var(--t-base) var(--ease-out);
}
.skip-link:focus { top: 16px; }

/* --------------------------------------------------------------------------
   3. Layout primitives
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-wide); }

.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: clamp(2.25rem, 1.6rem + 2vw, 3.5rem); }
.section--muted { background: var(--surface-muted); }
.section--soft { background: var(--surface-soft); }
.section--dark { background: var(--navy-800); color: rgba(255, 255, 255, 0.78); }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: var(--white); }

/* Hairline divider between light sections */
.section--edge { border-top: 1px solid var(--line); }

.section-head { max-width: 62ch; margin-bottom: clamp(2rem, 1.4rem + 1.8vw, 3rem); }
.section-head--center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display);
  font-size: 0.74rem; font-weight: 800;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--green-700);
  padding: 7px 14px 7px 12px;
  background: var(--green-50);
  border: 1px solid rgba(90, 170, 66, 0.22);
  border-radius: var(--r-full);
  margin-bottom: 16px;
}
.eyebrow svg { color: var(--green-600); }
.eyebrow--light {
  color: var(--green-300);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
}
.eyebrow--light svg { color: var(--green-400); }

.section-title { font-size: var(--fs-h2); font-weight: 800; margin-bottom: 14px; }
.section-title .accent {
  background: linear-gradient(100deg, var(--green-600), var(--teal-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-lead { font-size: var(--fs-lead); line-height: 1.72; color: var(--ink-600); max-width: 66ch; }
.section-head--center .section-lead { margin-inline: auto; }

/* Decorative background ornaments */
.ornament {
  position: absolute; border-radius: 50%; pointer-events: none;
  filter: blur(70px); opacity: 0.5; z-index: 0;
}
.ornament--green { background: radial-gradient(circle, rgba(124, 196, 95, 0.55), transparent 70%); }
.ornament--teal { background: radial-gradient(circle, rgba(53, 176, 209, 0.4), transparent 70%); }

.grid-texture {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(5, 52, 77, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5, 52, 77, 0.045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 75%);
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.btn {
  --btn-bg: var(--green-500);
  --btn-fg: var(--white);
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 54px;
  padding: 0 30px;
  font-family: var(--font-display);
  font-size: 0.98rem; font-weight: 700; letter-spacing: -0.01em;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid transparent;
  border-radius: var(--r-full);
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--t-base) var(--ease-out),
              box-shadow var(--t-base) var(--ease-out),
              background-color var(--t-base) var(--ease-out),
              color var(--t-base) var(--ease-out),
              border-color var(--t-base) var(--ease-out);
}
.btn svg { flex-shrink: 0; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

/* Sheen sweep */
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, transparent 20%, rgba(255, 255, 255, 0.28) 50%, transparent 80%);
  transform: translateX(-120%);
  transition: transform 0.75s var(--ease-out);
}
.btn:hover::after { transform: translateX(120%); }

.btn--primary { background: var(--green-500); box-shadow: var(--shadow-green); }
.btn--primary:hover { background: var(--green-600); box-shadow: 0 18px 38px -14px rgba(90, 170, 66, 0.7); }

.btn--navy { background: var(--navy-700); box-shadow: 0 14px 30px -14px rgba(4, 66, 98, 0.6); }
.btn--navy:hover { background: var(--navy-800); }

.btn--outline {
  background: transparent;
  color: var(--navy-700);
  border-color: rgba(4, 66, 98, 0.28);
  box-shadow: none;
}
.btn--outline:hover { background: var(--navy-700); border-color: var(--navy-700); color: var(--white); }

.btn--glass {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.btn--glass:hover { background: rgba(255, 255, 255, 0.18); border-color: rgba(255, 255, 255, 0.5); }

.btn--sm { min-height: 44px; padding: 0 20px; font-size: 0.88rem; }
.btn--lg { min-height: 60px; padding: 0 36px; font-size: 1.05rem; }
.btn--block { width: 100%; }
.btn--icon { min-height: 46px; width: 46px; padding: 0; border-radius: 50%; }

/* Quiet text link with animated underline */
.link-arrow {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.92rem;
  color: var(--green-700);
}
.link-arrow svg { transition: transform var(--t-base) var(--ease-out); }
.link-arrow:hover svg { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   5. Cards & chips
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-out),
              box-shadow var(--t-base) var(--ease-out),
              border-color var(--t-base) var(--ease-out);
}
.card--hover:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(90, 170, 66, 0.3); }

/* Cursor spotlight — driven by --mx/--my set in site.js */
.card--spotlight::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 0%),
              rgba(90, 170, 66, 0.10), transparent 65%);
  opacity: 0; transition: opacity var(--t-base) var(--ease-out); pointer-events: none;
}
.card--spotlight:hover::before { opacity: 1; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.01em;
  color: var(--ink-600);
  background: var(--ink-100);
  border-radius: var(--r-full);
  padding: 5px 12px;
  white-space: nowrap;
}
.chip--green { background: var(--green-50); color: var(--green-700); }
.chip--navy { background: var(--navy-100); color: var(--navy-600); }
.chip--outline { background: transparent; border: 1px solid var(--line-strong); }

/* --------------------------------------------------------------------------
   6. Header / navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed; inset-inline: 0; top: 0; z-index: 1000;
  padding-block: 12px;
  transition: background var(--t-base) var(--ease-out),
              box-shadow var(--t-base) var(--ease-out),
              padding var(--t-base) var(--ease-out),
              border-color var(--t-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.is-top {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom-color: var(--line);
}
.site-header.is-stuck {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 1px 0 var(--line), 0 12px 34px -22px rgba(5, 52, 77, 0.45);
  border-bottom-color: var(--line);
}

.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.brand { display: inline-flex; align-items: center; flex-shrink: 0; }
.brand img { height: clamp(48px, 4vw, 62px); width: auto; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  font-family: var(--font-display);
  font-size: 0.9rem; font-weight: 600;
  color: var(--navy-800);
  padding: 10px 14px;
  border-radius: var(--r-xs);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 5px; height: 2px;
  background: var(--green-500); border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--t-base) var(--ease-out);
}
.nav a:hover { color: var(--green-700); }
.nav a:hover::after { transform: scaleX(1); }
.nav a.is-active { color: var(--green-700); }
.nav a.is-active::after { transform: scaleX(1); }
.nav .btn { margin-left: 8px; }
.nav .btn::after { display: none; }

/* Dropdown */
.nav-item { position: relative; }
.nav-toggle-sub {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-display); font-size: 0.9rem; font-weight: 600;
  color: var(--navy-800); padding: 10px 14px; border-radius: var(--r-xs);
}
.nav-toggle-sub svg { transition: transform var(--t-base) var(--ease-out); }
.nav-item.is-open .nav-toggle-sub { color: var(--green-700); }
.nav-item.is-open .nav-toggle-sub svg { transform: rotate(180deg); }

.nav-sub {
  position: absolute; top: calc(100% + 12px); left: 50%;
  transform: translate(-50%, 10px);
  width: min(560px, 88vw);
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xl);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out), visibility var(--t-base);
}
.nav-item.is-open .nav-sub { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); }
.nav-sub a {
  display: flex; align-items: center; gap: 11px;
  padding: 11px 12px; border-radius: var(--r-sm);
  font-size: 0.87rem; font-weight: 600; color: var(--navy-800);
}
.nav-sub a::after { display: none; }
.nav-sub a:hover { background: var(--green-50); }
.nav-sub .sub-icon {
  width: 34px; height: 34px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 10px; background: var(--navy-100); color: var(--navy-600);
}
.nav-sub .sub-meta { display: block; font-size: 0.72rem; font-weight: 600; color: var(--ink-500); }

/* Subprograms that have not launched yet: listed, but inert */
.nav-sub-soon {
  display: flex; align-items: center; gap: 11px;
  padding: 11px 12px; border-radius: var(--r-sm);
  font-size: 0.87rem; font-weight: 600; color: var(--ink-400);
  cursor: default;
}
.nav-sub-soon .sub-icon { background: var(--ink-100); color: var(--ink-400); }
.nav-sub-soon .sub-meta { color: var(--ink-400); }

/* Burger */
.burger {
  display: none; position: relative; width: 46px; height: 46px;
  border-radius: 50%; border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.7);
  flex-shrink: 0;
}
.burger span {
  position: absolute; left: 13px; width: 20px; height: 2px; border-radius: 2px;
  background: var(--navy-800);
  transition: transform var(--t-base) var(--ease-out), opacity var(--t-fast);
}
.burger span:nth-child(1) { top: 17px; }
.burger span:nth-child(2) { top: 22px; }
.burger span:nth-child(3) { top: 27px; }
.nav-open .burger span:nth-child(1) { top: 22px; transform: rotate(45deg); }
.nav-open .burger span:nth-child(2) { opacity: 0; }
.nav-open .burger span:nth-child(3) { top: 22px; transform: rotate(-45deg); }

@media (max-width: 1080px) {
  .burger { display: block; }
  .nav {
    position: fixed; top: 76px; inset-inline: 12px;
    max-height: calc(100dvh - 96px); overflow-y: auto;
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0; visibility: hidden; transform: translateY(-12px);
    transition: opacity var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out), visibility var(--t-base);
  }
  .nav-open .nav { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav a { padding: 14px 16px; font-size: 0.98rem; font-weight: 700; }
  .nav a::after { display: none; }
  .nav a:hover { background: var(--green-50); }
  .nav .btn { margin: 8px 0 0; width: 100%; }
  .nav-toggle-sub { width: 100%; justify-content: space-between; padding: 14px 16px; font-size: 0.98rem; font-weight: 700; }
  .nav-sub {
    position: static; width: auto; transform: none; opacity: 1; visibility: visible; pointer-events: auto;
    display: none; grid-template-columns: 1fr; gap: 2px;
    box-shadow: none; border: 0; background: var(--navy-50); padding: 8px; margin-bottom: 4px;
  }
  .nav-item.is-open .nav-sub { display: grid; transform: none; }
  body.nav-open { overflow: hidden; }
}

/* --------------------------------------------------------------------------
   7. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative;
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.72);
  padding: clamp(3rem, 2rem + 2.6vw, 4.25rem) 0 26px;
  overflow: hidden;
}
.site-footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--grad-line);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1.4fr) repeat(3, minmax(140px, 1fr));
  gap: clamp(1.75rem, 1rem + 2.4vw, 3rem);
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand img { height: 62px; width: auto; margin-bottom: 18px; filter: brightness(0) invert(1); opacity: 0.95; }
.footer-brand p { font-size: 0.9rem; line-height: 1.75; max-width: 40ch; color: rgba(255, 255, 255, 0.65); }
.footer-col h5 {
  font-family: var(--font-display); font-size: 0.78rem; font-weight: 800;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--white); margin-bottom: 16px;
}
.footer-col li { margin-bottom: 11px; }
.footer-col a {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.89rem; color: rgba(255, 255, 255, 0.66);
  transition: color var(--t-fast), transform var(--t-fast);
}
.footer-col a:hover { color: var(--green-400); transform: translateX(3px); }
.footer-soon {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.89rem; color: rgba(255, 255, 255, 0.34);
}
.footer-soon em {
  font-style: normal; font-size: 0.66rem; font-weight: 800;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 2px 7px; border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.1); color: rgba(255, 255, 255, 0.55);
}
.footer-bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 16px; padding-top: 24px;
}
.footer-bottom p { font-size: 0.82rem; color: rgba(255, 255, 255, 0.5); }
.footer-legal { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-legal a { font-size: 0.82rem; color: rgba(255, 255, 255, 0.5); }
.footer-legal a:hover { color: var(--green-400); }
.social { display: flex; gap: 10px; }
.social a {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 50%; color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: background var(--t-fast), transform var(--t-base) var(--ease-out), color var(--t-fast);
}
.social a:hover { background: var(--green-500); color: var(--white); transform: translateY(-3px); }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* --------------------------------------------------------------------------
   8. Modal shell (registration + content dialogs)
   -------------------------------------------------------------------------- */
.modal {
  position: fixed; inset: 0; z-index: 9999;
  display: none; align-items: center; justify-content: center;
  padding: clamp(0.75rem, 2vw, 2rem);
  background: rgba(4, 26, 38, 0.72);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
}
.modal.is-open { display: flex; }
.modal.is-visible { opacity: 1; }

.modal-dialog {
  position: relative;
  width: min(1040px, 100%);
  max-height: min(92dvh, 980px);
  display: flex; flex-direction: column;
  background: var(--white);
  border-radius: var(--r-lg);
  box-shadow: 0 60px 120px -40px rgba(4, 26, 38, 0.7);
  overflow: hidden;
  transform: translateY(18px) scale(0.985);
  transition: transform var(--t-base) var(--ease-spring);
}
.modal.is-visible .modal-dialog { transform: none; }
.modal-dialog--wide { width: min(1180px, 100%); }

.modal-head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 16px 14px 22px;
  background: var(--navy-800);
  color: var(--white);
  flex-shrink: 0;
}
.modal-head h3 { display: flex; align-items: center; gap: 10px; font-size: 1rem; color: var(--white); margin: 0; }
.modal-close {
  width: 42px; height: 42px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: var(--white);
  transition: background var(--t-fast), transform var(--t-base) var(--ease-out);
}
.modal-close:hover { background: var(--green-500); transform: rotate(90deg); }
.modal-body { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; }
.modal-body--flush { padding: 0; }
.modal iframe { width: 100%; height: 100%; min-height: 60vh; border: 0; display: block; }
body.modal-open { overflow: hidden; }

/* --------------------------------------------------------------------------
   9. Utility: scroll reveal, progress bar, back-to-top
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal--left { transform: translateX(-28px); }
.reveal--right { transform: translateX(28px); }
.reveal--zoom { transform: scale(0.96); }

.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 1001;
  height: 3px; width: 100%;
  transform: scaleX(0); transform-origin: left;
  background: linear-gradient(90deg, var(--green-500), var(--teal-500));
  transition: transform 0.08s linear;
  pointer-events: none;
}

.to-top {
  position: fixed; right: clamp(14px, 2vw, 28px); bottom: clamp(14px, 2vw, 28px); z-index: 900;
  width: 48px; height: 48px; display: grid; place-items: center;
  border-radius: 50%;
  background: var(--navy-800); color: var(--white);
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out), visibility var(--t-base), background var(--t-fast);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--green-600); }

/* --------------------------------------------------------------------------
   10. Motion & print preferences
   -------------------------------------------------------------------------- */
@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;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .to-top, .scroll-progress, .modal, .site-footer { display: none !important; }
  body { color: #000; }
  .reveal { opacity: 1; transform: none; }
}