/* ============================================================
   Bokkuu Transport — Public Website
   Shared design tokens, layout, components
   Brand palette source: BOKKUU-INSA/04-System-Architecture/BOKKUU-SYSTEM-ARCHITECTURE.html
   ============================================================ */

:root {
  /* Brand */
  --color-primary:        #2f6f5e;   /* Bokkuu green */
  --color-primary-soft:   rgba(47, 111, 94, 0.10);
  --color-primary-hover:  #245649;
  --color-accent:         #c97b3f;   /* Bokkuu gold/copper */
  --color-accent-soft:    rgba(201, 123, 63, 0.10);

  /* Surface */
  --color-bg:             #f7f5f0;   /* warm cream */
  --color-surface:        #ffffff;
  --color-surface-2:      #fbf9f3;
  --color-border:         #e9e3d6;
  --color-border-soft:    #efeadd;

  /* Text */
  --color-ink:            #14171e;
  --color-ink-soft:       #3a4256;
  --color-muted:          #7c7a72;

  /* States */
  --color-success:        #1f9c63;
  --color-warning:        #c47a00;
  --color-danger:         #c8362a;

  /* Type */
  --font-sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans Ethiopic", sans-serif;
  --font-serif: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  --font-display: 'Outfit', var(--font-sans);

  /* Geometry */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  22px;
  --shadow-sm:  0 1px 2px rgba(20, 23, 30, 0.05);
  --shadow-md:  0 6px 18px rgba(20, 23, 30, 0.08);
  --shadow-lg:  0 18px 40px rgba(20, 23, 30, 0.12);

  /* Layout */
  --container-max:   1140px;
  --container-pad:   clamp(16px, 4vw, 32px);
  --section-gap:     clamp(48px, 8vw, 96px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* Accessible skip link */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.visually-hidden:focus {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  display: inline-block;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 120ms ease;
}
a:hover, a:focus-visible {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 0.5em;
  font-weight: 700;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.55rem); font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 600; }

p { margin: 0 0 1em; color: var(--color-ink-soft); }
.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--color-ink-soft);
  max-width: 60ch;
}
.eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

ul, ol { color: var(--color-ink-soft); padding-left: 1.2em; }
li { margin: 0.35em 0; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.section {
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.section--tight { padding-top: clamp(32px, 5vw, 48px); padding-bottom: clamp(32px, 5vw, 48px); }
.section--primary {
  background: linear-gradient(135deg, #faf6ee 0%, #f0e8d8 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.section--ink {
  background: var(--color-ink);
  color: #f7f5f0;
}
.section--ink h1, .section--ink h2, .section--ink h3 { color: #fff; }
.section--ink p, .section--ink li { color: rgba(247, 245, 240, 0.78); }
.section--ink a { color: #f7d39e; }

/* ============================================================
   HEADER + NAV
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 240, 0.92);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.site-brand:hover { text-decoration: none; }
.site-brand__logo {
  height: 36px;
  width: auto;
  border-radius: 6px;
}
.site-brand__name { display: inline-block; }
.site-brand__name--sep { color: var(--color-muted); font-weight: 500; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav__link {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 120ms ease, color 120ms ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  text-decoration: none;
}
.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}
.site-nav__cta {
  margin-left: 8px;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  appearance: none;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
  color: var(--color-ink);
}
.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  margin: 4px 0;
  border-radius: 1px;
  transition: transform 200ms ease, opacity 200ms ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 880px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    position: absolute;
    inset: 100% 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 8px;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav__link { padding: 12px 14px; border-radius: var(--radius-md); }
  .site-nav__cta { margin-left: 0; margin-top: 6px; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: inherit;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease, transform 120ms ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover, .btn--primary:focus-visible {
  background: var(--color-primary-hover);
  color: #fff;
}
.btn--accent {
  background: var(--color-accent);
  color: #fff;
}
.btn--accent:hover, .btn--accent:focus-visible {
  background: #b06a31; color: #fff;
}
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--ghost:hover, .btn--ghost:focus-visible {
  background: var(--color-primary-soft);
  color: var(--color-primary-hover);
}
.btn--lg { padding: 14px 26px; font-size: 1.05rem; }
.btn--block { display: flex; width: 100%; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(48px, 8vw, 96px);
  padding-bottom: clamp(48px, 8vw, 96px);
  background:
    /* Soft horizon hint where the bus/road would sit */
    linear-gradient(180deg,
      rgba(255,255,255,0.0)  0%,
      rgba(255,255,255,0.0)  72%,
      rgba(245,247,244,0.86) 88%,
      rgba(255,255,255,1.0)  100%),
    /* Sky gradient: deep blue at top → light blue at horizon */
    radial-gradient(ellipse at 50% 110%, rgba(47, 111, 94, 0.10) 0%, transparent 55%),
    linear-gradient(180deg, #6db4e8 0%, #a7d6f1 38%, #d6ebf6 70%, #eaf4f8 100%);
  background-color: #bfe0f7;
}
/* Optional Bokkuu landscape background. The CSS gradient above is the
   default because the supplied mockup image includes Bokkuu chrome that
   conflicts with our HTML overlay. To use a chrome-free landscape image,
   drop it at /assets/bokkuu_hero_landscape.jpg and uncomment below. */
/*
.hero {
  background:
    linear-gradient(180deg,
      rgba(255,255,255,0.0)  0%,
      rgba(255,255,255,0.0)  45%,
      rgba(255,255,255,0.78) 75%,
      rgba(255,255,255,0.92) 100%),
    url(/assets/bokkuu_hero_landscape.jpg) center top / cover no-repeat;
}
*/
.hero > .container { position: relative; z-index: 2; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.95fr;
  gap: clamp(24px, 5vw, 56px);
  align-items: start;
}
@media (max-width: 980px) {
  .hero__grid { grid-template-columns: 1fr; gap: clamp(24px, 5vw, 40px); }
}
.hero__title {
  font-size: clamp(2.4rem, 5.6vw, 3.8rem);
  margin-bottom: 16px;
  color: var(--color-primary-dark);
}
.hero__slogan {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}
.hero__lede {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--color-ink-soft);
  max-width: 56ch;
  margin-bottom: 24px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* === Hero features (4 design-style cards) === */
.hero__features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.hero__feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.hero__feature-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 1.1rem;
  line-height: 1;
}
.hero__feature-text strong {
  display: block;
  color: var(--color-ink);
  font-weight: 600;
  margin-bottom: 2px;
  font-size: 0.98rem;
}
.hero__feature-text span {
  display: block;
  color: var(--color-muted);
  font-size: 0.86rem;
  line-height: 1.4;
}
@media (max-width: 600px) {
  .hero__features { grid-template-columns: 1fr; }
}

/* === Hero floating card (right column) === */
.hero__card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-lg);
  z-index: 3;
}
.hero__card-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-ink);
  text-align: center;
}
.hero__card-sub {
  margin: 0 0 18px;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.92rem;
}
.hero__card-chips {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}
@media (max-width: 600px) {
  .hero__card-chips { grid-template-columns: 1fr; }
}
.hero__card-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--color-ink);
  text-decoration: none;
  transition: background 0.18s, border-color 0.18s, transform 0.18s;
}
.hero__card-chip:hover,
.hero__card-chip:focus-visible {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}
.hero__card-chip-from { color: var(--color-muted); font-weight: 400; }
.hero__card-chip-arrow { color: var(--color-primary); font-weight: 600; }
.hero__card-chip-to { font-weight: 600; }
.hero__card-note {
  margin: 12px 0 0;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-muted);
  line-height: 1.45;
}

/* ============================================================
   CARDS
   ============================================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.card h3 { margin-top: 0; }
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 14px;
}
.card--accent .card__icon { background: var(--color-accent-soft); color: var(--color-accent); }

/* ============================================================
   STEPS
   ============================================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  counter-reset: step;
}
.step {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  counter-increment: step;
}
.step::before {
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 24px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
}
.step h3 { margin-top: 8px; }

/* ============================================================
   CALLOUT / Q&A
   ============================================================ */
.faq {
  display: grid;
  gap: 10px;
}
.faq details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-ink);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--color-primary);
  transition: transform 200ms ease;
}
.faq details[open] summary::after { content: '−'; }
.faq details p { margin: 12px 0 0; }

/* ============================================================
   FORMS
   ============================================================ */
.form { display: grid; gap: 14px; max-width: 540px; }
.form label { font-weight: 600; color: var(--color-ink); font-size: 0.92rem; }
.form input, .form textarea, .form select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.4;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.form input:focus, .form textarea:focus, .form select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form textarea { min-height: 140px; resize: vertical; }
.form__hint { font-size: 0.85rem; color: var(--color-muted); }

/* Contact page: visible status banner when submission is unavailable */
.contact-status {
  margin: 0 0 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  border: 1px solid color-mix(in srgb, var(--color-accent) 35%, transparent);
  color: var(--color-ink);
}
.contact-status strong { color: var(--color-accent); display: block; margin-bottom: 6px; }
.contact-status p { margin: 0; font-size: 0.95rem; color: var(--color-ink-soft); }
.contact-status p em { font-style: normal; color: var(--color-primary); font-weight: 600; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-ink);
  color: rgba(247, 245, 240, 0.78);
  padding-top: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(24px, 4vw, 40px);
}
.site-footer h4 {
  color: #fff;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
  margin-bottom: 16px;
  font-size: 0.92rem;
  text-transform: uppercase;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}
@media (max-width: 880px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 28px 24px; }
}
@media (max-width: 540px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}
.site-footer__list { list-style: none; padding: 0; margin: 0; }
.site-footer__list li { margin: 8px 0; }
.site-footer__list a {
  color: rgba(247, 245, 240, 0.78);
  font-size: 0.95rem;
}
.site-footer__list a:hover, .site-footer__list a:focus-visible {
  color: #f7d39e;
  text-decoration: underline;
}
.site-footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.site-footer__brand img { height: 38px; width: auto; }
.site-footer__brand strong { color: #fff; font-family: var(--font-display); font-size: 1.1rem; }
.site-footer__tagline { color: rgba(247, 245, 240, 0.62); font-size: 0.92rem; max-width: 36ch; }
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid rgba(247, 245, 240, 0.12);
  font-size: 0.85rem;
  color: rgba(247, 245, 240, 0.55);
}
.site-footer__bottom a { color: rgba(247, 245, 240, 0.7); }
.site-footer__bottom a:hover { color: #f7d39e; }

/* ============================================================
   UTILITIES
   ============================================================ */
.muted { color: var(--color-muted); }
.center { text-align: center; }
.stack-sm > * + * { margin-top: 8px; }
.stack-md > * + * { margin-top: 16px; }
.stack-lg > * + * { margin-top: 28px; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.spacer-32 { height: 32px; }
.spacer-64 { height: 64px; }
.text-balance { text-wrap: balance; }

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  body { background: white; color: black; }
  .site-header, .site-footer, .nav-toggle, .site-nav { display: none !important; }
  .card, .step, details { box-shadow: none; border-color: #999; }
  a { color: black; text-decoration: underline; }
}