/* ==========================================================================
   Lukio Public Website Styles
   Single-file CSS — no build step required
   ========================================================================== */

/* ---------- Design Tokens (from app base.scss) ---------- */
:root {
  /* Colors */
  --primary: #3f51b5;
  --primary-dark: #303f9f;
  --primary-light: #c5cae9;
  --primary-rgb: 63, 81, 181;
  --accent: #ff4081;

  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-tertiary: #6b6b6b;
  --text-on-primary: #ffffff;

  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-secondary: #fafafa;
  --border: #e0e0e0;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                 Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-family-display: 'Source Serif 4', 'Georgia', 'Times New Roman', serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  --font-size-3xl: clamp(1.75rem, 1.25rem + 1.5vw, 2.5rem);
  --font-size-4xl: clamp(2rem, 1.4rem + 2vw, 3rem);

  /* Spacing (4px scale) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Borders */
  --radius-sm: 0.25rem;
  --radius: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg);
}

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

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

a:hover {
  color: var(--primary-dark);
}

ul {
  list-style: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-xl); }

/* Display font for key headings: serif with tighter tracking */
.hero__title,
.section-title,
.cta__title {
  font-family: var(--font-family-display);
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1rem, 0.5rem + 2vw, 1.5rem);
}

.section {
  padding: clamp(3rem, 2rem + 3vw, 5rem) 0;
}

.section--alt {
  background-color: var(--surface);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.section-title {
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: var(--space-12);
}

.text-center {
  text-align: center;
}

.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: var(--space-8);
}

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.5;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  min-height: 44px; /* WCAG touch target */
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn--primary {
  background-color: var(--primary);
  color: var(--text-on-primary);
}

.btn--primary:hover {
  background-color: var(--primary-dark);
  color: var(--text-on-primary);
}

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

.btn--outline:hover {
  background-color: rgba(var(--primary-rgb), 0.08);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn--lg {
  padding: clamp(0.75rem, 0.5rem + 0.5vw, 1rem) clamp(1.25rem, 1rem + 1vw, 2rem);
  font-size: var(--font-size-lg);
  min-height: 44px;
}

/* ---------- Mission / Origin Story ---------- */
.mission {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-16) 0;
}

.mission__inner {
  max-width: 760px;
  margin: 0 auto;
  border-left: 3px solid var(--primary);
  padding-left: var(--space-8);
}

.mission__text {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}

.mission__text:last-of-type {
  margin-bottom: 0;
}

.mission__origin {
  font-size: var(--font-size-base);
  color: var(--text-tertiary);
  line-height: 1.7;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 1rem + 1.5vw, 2rem);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px) scale(1.01);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.card__text {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  position: relative;
}

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

.nav__logo img {
  height: 32px;
  width: auto;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__cta {
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}

.nav__cta--visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav__link {
  font-weight: 600;
  color: var(--primary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius);
  transition: background var(--transition);
}

.nav__link:hover {
  background: rgba(var(--primary-rgb), 0.08);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--nav-height) + clamp(2rem, 1.5rem + 2vw, 3rem));
  padding-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
  display: flex;
  align-items: center;
  background:
    radial-gradient(ellipse at 15% 20%, rgba(var(--primary-rgb), 0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 80%, rgba(var(--primary-rgb), 0.12) 0%, transparent 50%),
    linear-gradient(170deg, #e8ebf7 0%, var(--bg) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    170deg,
    rgba(255, 255, 255, 0.12) 0%,
    rgba(245, 247, 250, 0.05) 40%,
    rgba(255, 255, 255, 0.15) 100%
  );
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero__content {
  max-width: clamp(340px, 52vw + 120px, 680px);
  margin: 0 auto;
  text-align: center;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(var(--primary-rgb), 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(var(--primary-rgb), 0.03) 0%, transparent 50%),
    rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 0.75rem + 2vw, 2rem) clamp(1.5rem, 1rem + 2vw, 2.5rem);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

.hero__title {
  font-size: var(--font-size-4xl);
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  max-width: 600px;
}

.hero__badge {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--accent);
  background: rgba(255, 64, 129, 0.08);
  border: 1px solid rgba(255, 64, 129, 0.25);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  transition: background var(--transition), border-color var(--transition);
}

.hero__badge:hover {
  background: rgba(255, 64, 129, 0.14);
  border-color: var(--accent);
  color: var(--accent);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

/* hero__title sizing handled by fluid --font-size tokens */

/* ---------- Features Section ---------- */
.feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.feature__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: rgba(var(--primary-rgb), 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.feature__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.feature__text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* ---------- FAQ ---------- */
.faq {
  max-width: 760px;
  margin: var(--space-8) auto 0;
}

.faq__item {
  border-bottom: 1px solid var(--border);
}

.faq__item:first-child {
  border-top: 1px solid var(--border);
}

/* Anchor offset — prevent fixed nav from hiding scroll targets */
[id] {
  scroll-margin-top: calc(var(--nav-height) + var(--space-4));
}

.faq__item:target {
  scroll-margin-top: calc(var(--nav-height) + var(--space-8));
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  min-height: 44px; /* WCAG touch target */
  transition: color var(--transition);
}

.faq__question:hover {
  color: var(--primary);
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '';
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  margin-left: var(--space-4);
  border-right: 2px solid var(--text-tertiary);
  border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(45deg);
  transform-origin: center;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.faq__question:hover::after {
  border-color: var(--primary);
}

details[open] .faq__question::after {
  transform: rotate(-135deg);
}

/* Animated answer — grid row trick for smooth height transition.
   JS controls grid-template-rows via inline style for reliable open/close. */
.faq__answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease;
}

.faq__answer-inner {
  overflow: hidden;
}

.faq__answer-inner p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.7;
  padding-bottom: var(--space-4);
}

.faq__answer-inner p:last-child {
  padding-bottom: var(--space-6);
}

.faq__answer-inner p + p {
  margin-top: 0;
}

/* ---------- CTA Section ---------- */
.cta {
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-dark) 100%
  );
  color: var(--text-on-primary);
  text-align: center;
  padding: clamp(3rem, 2rem + 4vw, 5rem) 0;
}

.cta__title {
  color: var(--text-on-primary);
  margin-bottom: var(--space-4);
}

.cta__subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--font-size-lg);
  max-width: 560px;
  margin: 0 auto var(--space-8);
}

.cta__badge {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-on-primary);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.cta__contact {
  margin-top: var(--space-8);
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.8);
}

.cta__contact a {
  color: var(--text-on-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cta__contact a:hover {
  color: var(--text-on-primary);
  opacity: 0.9;
}

/* ---------- Wordmark ---------- */
.wordmark {
  font-family: var(--font-family-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--primary);
  text-decoration: none;
}

.wordmark__product {
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-left: var(--space-2);
}

.footer__logo.wordmark {
  font-size: 1.25rem;
}

/* ---------- Product Cards ---------- */
.product-card {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: box-shadow var(--transition), transform var(--transition);
}

a.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.product-card__link {
  display: inline-block;
  margin-top: var(--space-4);
  font-weight: 600;
  color: var(--primary);
}

.product-card--next {
  border-style: dashed;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-8) 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer__logo img {
  height: 28px;
  width: auto;
}

.footer__tagline {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

.footer__nav {
  display: flex;
  gap: var(--space-6);
}

.footer__nav a {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: var(--primary);
}

.footer__copy {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

.footer__version {
  opacity: 0.6;
  font-size: var(--font-size-xs);
  margin-left: 0.5rem;
}

/* ---------- Legal Pages ---------- */
.legal {
  padding-top: calc(var(--nav-height) + var(--space-16));
  padding-bottom: var(--space-16);
}

.legal h1 {
  margin-bottom: var(--space-4);
}

.legal p {
  margin-bottom: var(--space-4);
  max-width: 720px;
}

/* ---------- 404 Page ---------- */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
  padding: var(--space-8);
}

.error-page__code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.error-page__text {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children within a grid */
.reveal .card,
.reveal .feature,
.reveal .faq__item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.reveal--visible .card,
.reveal--visible .feature,
.reveal--visible .faq__item {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid children */
.reveal--visible :nth-child(1) { transition-delay: 0s; }
.reveal--visible :nth-child(2) { transition-delay: 0.08s; }
.reveal--visible :nth-child(3) { transition-delay: 0.16s; }
.reveal--visible :nth-child(4) { transition-delay: 0.24s; }
.reveal--visible :nth-child(5) { transition-delay: 0.32s; }
.reveal--visible :nth-child(6) { transition-delay: 0.4s; }
.reveal--visible :nth-child(7) { transition-delay: 0.48s; }
.reveal--visible :nth-child(8) { transition-delay: 0.56s; }
.reveal--visible :nth-child(9) { transition-delay: 0.64s; }

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .reveal .card,
  .reveal .feature,
  .reveal .faq__item {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card:hover {
    transform: translateY(-2px);
  }
}

/* ---------- Section Dividers (wave curves) ---------- */
/* Curved top edge on CTA section for visual rhythm */
.cta {
  position: relative;
  margin-top: clamp(20px, 1.5vw, 32px);
}

.cta::before {
  content: '';
  position: absolute;
  top: calc(-1 * clamp(20px, 1.5vw, 32px));
  left: 0;
  right: 0;
  height: clamp(20px, 1.5vw, 32px);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  clip-path: ellipse(55% 100% at 50% 100%);
}

/* ---------- Content Visibility (below-fold performance) ---------- */
.section,
.mission,
.cta,
.footer {
  content-visibility: auto;
  contain-intrinsic-size: auto 600px;
}

/* ---------- Accessibility ---------- */
.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;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ---------- Nav Section Links ---------- */
.nav__section-links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .nav__section-links {
    display: flex;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
}

.nav__section-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.nav__section-link:hover {
  color: var(--primary);
}

.nav__section-link--active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ---------- Nav Hamburger ---------- */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

@media (min-width: 768px) {
  .nav__hamburger {
    display: none;
  }
}

.nav__hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Nav Mobile Menu ---------- */
.nav__mobile-menu {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4) 0;
  flex-direction: column;
  gap: var(--space-2);
}

.nav__mobile-menu--open {
  display: flex;
}

@media (min-width: 768px) {
  .nav__mobile-menu {
    display: none !important;
  }
}

.nav__mobile-link {
  display: block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition), background var(--transition);
}

.nav__mobile-link:hover {
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.05);
}

.nav__mobile-link--cta {
  color: var(--primary);
  font-weight: 600;
}

/* ---------- Connectivity Section ---------- */
/* Tracking Table */
.tracking-table {
  margin-top: var(--space-6);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.tracking-table__header {
  display: grid;
  grid-template-columns: 36px 1.4fr 1fr;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--surface-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tracking-row {
  border-bottom: 1px solid var(--border);
}

.tracking-row:last-child {
  border-bottom: none;
}

.tracking-row__summary {
  display: grid;
  grid-template-columns: 36px 1.4fr 1fr;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  list-style: none;
  transition: background 0.15s ease;
}

.tracking-row__summary::-webkit-details-marker {
  display: none;
}

.tracking-row__summary:hover {
  background: rgba(var(--primary-rgb), 0.03);
}

.tracking-row[open] > .tracking-row__summary {
  background: rgba(var(--primary-rgb), 0.03);
}

.tracking-row__flag {
  width: 28px;
  height: 20px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.tracking-row__name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.tracking-row__connectivity {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}

.tracking-row__details {
  padding: var(--space-3) var(--space-4) var(--space-4);
  padding-left: calc(36px + var(--space-4) + var(--space-3));
  background: rgba(var(--primary-rgb), 0.015);
  border-top: 1px solid var(--border);
}

.tracking-row__overview {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.tracking-row__islands {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.island-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  align-items: baseline;
}

.island-row__name {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.island-row__status {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

.tracking-row__sources {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}

.tracking-row__sources-label {
  font-weight: 600;
  margin-right: var(--space-1);
}

.tracking-row__sources a {
  color: var(--primary);
  text-decoration: none;
}

.tracking-row__sources a:hover {
  text-decoration: underline;
}

/* Responsive: Stack on mobile */
@media (max-width: 768px) {
  .tracking-table__header {
    display: none;
  }

  .tracking-row__summary {
    grid-template-columns: 32px 1fr;
    grid-template-rows: auto auto auto;
    gap: 2px var(--space-3);
    padding: var(--space-3);
  }

  .tracking-row__flag {
    grid-row: 1 / 3;
    align-self: center;
  }

  .tracking-row__name {
    grid-column: 2;
  }

  .tracking-row__connectivity {
    grid-column: 2;
  }

  .tracking-row__details {
    padding-left: var(--space-4);
  }

  .island-row {
    grid-template-columns: 1fr;
  }
}

/* What it does: three groups (manage, see, share) over a strip of everyday strengths */
.does {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.does__group {
  min-width: 0;
}

.does__group-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--primary);
}

.does__list {
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

.does__item dt {
  font-weight: 600;
  color: var(--text-primary);
}

.does__item dd {
  margin: var(--space-1) 0 0;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.works-where {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}

.works-where__title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  margin: 0 0 var(--space-4);
}

.works-where__lead {
  margin: 0 0 var(--space-6);
  max-width: 64ch;
  color: var(--text-secondary);
}

.works-where__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4) var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.works-where__list strong {
  display: block;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
}

@media (min-width: 640px) {
  .works-where__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .does {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .works-where__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* Why connectivity matters: office burdens beside one hub linked to island sites */
.connect-why {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-6);
  padding: var(--space-8) clamp(var(--space-4), 4vw, var(--space-10));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.connect-why__title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-2xl);
  letter-spacing: -0.01em;
  margin: 0;
}

.connect-why__compare {
  display: grid;
  gap: var(--space-8);
}

.connect-why__pane {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.connect-why__pane-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0;
}

.connect-why__pane--office .connect-why__pane-title {
  color: var(--text-tertiary);
}

.connect-why__burdens {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--text-tertiary);
}

.connect-why__burdens li {
  padding: var(--space-3) 0;
  border-top: 1px solid var(--border);
}

.connect-why__burdens li:last-child {
  border-bottom: 1px solid var(--border);
}

.connect-why__pane--lukio .connect-why__pane-title {
  color: var(--primary);
}

.connect-why__burdens--lukio {
  color: var(--text-primary);
}

.connect-why__close {
  margin: 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  padding-right: max(0px, calc(100% - 64ch));
}

@media (min-width: 768px) {
  .connect-why__compare {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 0;
  }

  .connect-why__pane--office {
    padding-right: var(--space-8);
  }

  .connect-why__pane--lukio {
    padding-left: var(--space-8);
    border-left: 1px solid var(--border);
  }
}

/* ---------- Back to Top Button ---------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 50;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--text-on-primary);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
}

.back-to-top:hover {
  background: var(--primary-dark);
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

@media (max-width: 639px) {
  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 44px;
    height: 44px;
  }
}