/* =========================================================
   Rivers Autotransport — styles.css
   Mobile-first. Calm, premium, professional.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* Color */
  --color-bg: #F7F4EE;          /* warm off-white */
  --color-surface: #FFFFFF;     /* card surface */
  --color-surface-2: #EFEAE0;   /* subtle alternate */
  --color-ink: #0E2233;         /* deep navy (primary text) */
  --color-ink-2: #2A3D4F;       /* secondary text */
  --color-muted: #6B7480;       /* tertiary text */
  --color-accent: #B08A4A;      /* warm muted gold */
  --color-accent-soft: #C9A467;
  --color-line: rgba(14, 34, 51, 0.08);
  --color-line-strong: rgba(14, 34, 51, 0.14);

  /* Spacing — 8px system */
  --s-1: 8px;
  --s-2: 16px;
  --s-3: 24px;
  --s-4: 32px;
  --s-5: 40px;
  --s-6: 48px;
  --s-7: 64px;
  --s-8: 80px;
  --s-9: 96px;
  --s-10: 128px;

  /* Radii */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;

  /* Shadow — very subtle */
  --shadow-sm: 0 1px 2px rgba(14, 34, 51, 0.04);
  --shadow-md: 0 6px 24px rgba(14, 34, 51, 0.06);

  /* Type */
  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --container: 1200px;
  --header-h: 72px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-fast: 150ms;
  --t-base: 200ms;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 8px 12px;
  z-index: 1000;
}
.skip-link:focus {
  left: 8px;
  top: 8px;
}

/* ---------- Type ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--color-ink);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 var(--s-2);
}

p {
  margin: 0 0 var(--s-2);
  color: var(--color-ink-2);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.7;
  max-width: 62ch;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 500;
  margin: 0 0 var(--s-2);
}

.section-title {
  font-size: clamp(1.75rem, 1.3rem + 2.2vw, 2.75rem);
}

.section-lede {
  color: var(--color-muted);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--s-2);
}

.section {
  padding-block: var(--s-7);
}

.section-head {
  margin-bottom: var(--s-6);
  max-width: 720px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  transition: background var(--t-base) var(--ease),
              color var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              transform var(--t-base) var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-bg);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-ink-2);
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-line-strong);
}
.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--color-ink);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  padding-inline: 12px;
}
.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--color-accent);
}

.btn-sm {
  min-height: 40px;
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(247, 244, 238, 0.85);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-base) var(--ease),
              background var(--t-base) var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: var(--s-2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
}
.brand-mark {
  width: 36px;
  height: 36px;
  object-fit: contain;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.brand-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: 0.01em;
}
.brand-sub {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-top: 4px;
}

.nav-desktop {
  display: none;
}
.nav-desktop a {
  font-size: 0.9375rem;
  color: var(--color-ink-2);
  padding: 8px 4px;
  position: relative;
}
.nav-desktop a:hover,
.nav-desktop a:focus-visible {
  color: var(--color-ink);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.hide-on-mobile {
  display: none;
}

/* Hamburger */
.nav-toggle {
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
}
.nav-toggle-bar {
  width: 18px;
  height: 1.5px;
  background: var(--color-ink);
  transition: transform var(--t-base) var(--ease),
              opacity var(--t-base) var(--ease);
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6.5px) 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(-6.5px) rotate(-45deg);
}

.mobile-menu {
  border-top: 1px solid var(--color-line);
  background: var(--color-bg);
  padding: var(--s-3);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.mobile-menu[hidden] {
  display: none !important;
}
.mobile-menu nav {
  display: flex;
  flex-direction: column;
}
.mobile-menu nav a {
  padding: 14px 4px;
  font-size: 1rem;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}
.mobile-menu nav a:last-child {
  border-bottom: 0;
}
.mobile-menu .btn {
  margin-top: var(--s-2);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  isolation: isolate;
  min-height: 76vh;
  display: flex;
  align-items: center;
  padding-block: var(--s-7) var(--s-6);
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(14, 34, 51, 0.55) 0%, rgba(14, 34, 51, 0.35) 40%, rgba(14, 34, 51, 0.7) 100%);
}

.hero-inner {
  color: var(--color-bg);
  max-width: 1200px;
  display: grid;
  gap: var(--s-3);
}
.hero-copy {
  max-width: 720px;
}
.hero-copy {
  margin-inline: auto;
}
.hero-inner .eyebrow {
  color: var(--color-accent-soft);
}

.hero-title {
  color: #FFFFFF;
  font-size: clamp(2rem, 1.4rem + 3.6vw, 3.75rem);
  margin-bottom: var(--s-2);
  letter-spacing: -0.015em;
}

.hero-lede {
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1rem, 0.95rem + 0.4vw, 1.125rem);
  max-width: 56ch;
  margin-bottom: var(--s-3);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  margin-bottom: var(--s-4);
}

.hero-cta .btn {
  width: 100%;
}
.hero-cta .btn-primary {
  background: var(--color-bg);
  color: var(--color-ink);
}
.hero-cta .btn-primary:hover,
.hero-cta .btn-primary:focus-visible {
  background: #FFFFFF;
}
.hero-cta .btn-ghost {
  color: rgba(255, 255, 255, 0.95);
}
.hero-cta .btn-ghost:hover,
.hero-cta .btn-ghost:focus-visible {
  color: var(--color-accent-soft);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-4);
  padding-top: var(--s-2);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  justify-content: center;
  text-align: center;
}
.trust-row li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.trust-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: #FFFFFF;
  line-height: 1;
}
.trust-label {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
}

.hero-side-card {
  background: rgba(247, 244, 238, 0.94);
  color: var(--color-ink);
  border: 1px solid rgba(14, 34, 51, 0.14);
  border-radius: var(--r-lg);
  padding: var(--s-3);
  max-width: 440px;
  width: 100%;
  justify-self: start;
  box-shadow: var(--shadow-md);
  display: none;
}

.hero-card-eyebrow {
  margin: 0 0 var(--s-1);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.hero-card-title {
  font-size: clamp(1.35rem, 1.15rem + 0.8vw, 1.75rem);
  margin-bottom: var(--s-3);
}

.hero-card-list {
  display: grid;
  gap: var(--s-2);
  margin-bottom: var(--s-4);
}

.hero-card-list li {
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--color-line);
}

.hero-card-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.hero-card-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 4px;
}

.hero-card-value {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-ink);
}

a.hero-card-value:hover,
a.hero-card-value:focus-visible {
  color: var(--color-accent);
}

/* ---------- Carousel (mobile-first) ---------- */
.carousel {
  position: relative;
}

.carousel-track {
  display: flex;
  gap: var(--s-2);
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--s-3);
  padding-inline: 0;
  padding-bottom: var(--s-3);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar {
  display: none;
}

.carousel-track > .card {
  flex: 0 0 88%;
  scroll-snap-align: start;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--s-2);
}
.carousel-dots button {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-line-strong);
  transition: background var(--t-base) var(--ease),
              transform var(--t-base) var(--ease),
              width var(--t-base) var(--ease);
}
.carousel-dots button[aria-current="true"] {
  background: var(--color-accent);
  width: 22px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--r-lg);
  padding: var(--s-3);
  transition: border-color var(--t-base) var(--ease),
              transform var(--t-base) var(--ease);
}
.card:hover {
  border-color: var(--color-line-strong);
}

.service-card .icon,
.feature-card .feature-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: var(--color-surface-2);
  color: var(--color-ink);
  margin-bottom: var(--s-3);
}
.service-card .icon svg {
  width: 22px;
  height: 22px;
}

.feature-card .feature-num {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-accent);
  background: transparent;
  border: 1px solid var(--color-line-strong);
  letter-spacing: 0.04em;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--s-1);
}

.card-text {
  color: var(--color-ink-2);
  font-size: 0.9375rem;
  margin: 0;
  max-width: 50ch;
}

/* ---------- About ---------- */
.about {
  background: var(--color-surface-2);
}
.about-grid {
  display: grid;
  gap: var(--s-5);
}
.about-media img {
  width: 100%;
  border-radius: var(--r-lg);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--color-line);
}
.about-copy .btn {
  margin-top: var(--s-2);
}

/* ---------- Reviews ---------- */
.reviews {
  background: var(--color-surface-2);
}

.review-card {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.stars {
  display: inline-flex;
  gap: 2px;
}
.stars svg {
  width: 16px;
  height: 16px;
  fill: var(--color-accent);
}
.review-quote {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--color-ink);
  margin: 0;
  quotes: """ """;
}
.review-quote::before { content: open-quote; margin-right: 2px; color: var(--color-accent); }
.review-quote::after  { content: close-quote; margin-left: 2px; color: var(--color-accent); }

.review-author {
  font-weight: 500;
  color: var(--color-ink);
  margin: 0;
}
.review-meta {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin: 0;
}

/* ---------- Contact ---------- */
.contact {
  background: var(--color-bg);
}
.contact-grid {
  display: grid;
  gap: var(--s-6);
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  margin-top: var(--s-4);
}
.info-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--s-3);
  border: 1px solid var(--color-line);
  border-radius: var(--r-md);
  background: var(--color-surface);
}
.info-label {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.info-value {
  font-size: 1rem;
  color: var(--color-ink);
  font-weight: 500;
}
a.info-value:hover {
  color: var(--color-accent);
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--r-lg);
  padding: var(--s-4);
  display: grid;
  gap: var(--s-3);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--color-ink-2);
  font-weight: 500;
}
.field input,
.field select,
.field textarea {
  font: inherit;
  color: var(--color-ink);
  background: var(--color-bg);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--r-md);
  padding: 14px 14px;
  min-height: 48px;
  transition: border-color var(--t-base) var(--ease),
              background var(--t-base) var(--ease),
              box-shadow var(--t-base) var(--ease);
}
.field textarea {
  resize: vertical;
  min-height: 120px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-ink);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px rgba(176, 138, 74, 0.18);
}

.form-note {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-muted);
  min-height: 1.2em;
}
.form-note.is-success { color: var(--color-ink); }
.form-note.is-error   { color: #8B2D2D; }

/* ---------- Footer ---------- */
.site-footer {
  background: #171813;
  color: #E5E1D8;
  padding-top: var(--s-6);
  padding-bottom: var(--s-3);
}
.footer-inner {
  display: grid;
  gap: var(--s-4);
  padding-bottom: var(--s-4);
  text-align: center;
  justify-items: center;
}
.footer-brand {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 12px;
  justify-content: center;
  justify-items: center;
  text-align: center;
  max-width: 320px;
}
.footer-brand .brand-mark {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.9);
  padding: 4px;
}
.footer-brand .brand-name {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 500;
  margin: 0;
  color: #F4F1EA;
  grid-column: 2;
  align-self: center;
}
.footer-intro {
  font-size: 1rem;
  color: #CBC6BA;
  margin: 4px 0 0;
  max-width: none;
  line-height: 1.6;
  grid-column: 1 / -1;
  text-align: center;
}

.footer-col {
  display: grid;
  gap: 6px;
  align-content: start;
  justify-items: center;
}

.footer-heading {
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #8C8A80;
  font-weight: 600;
  margin: 0 0 4px;
}

.footer-text {
  margin: 0;
  color: #E5E1D8;
  font-size: 1rem;
  line-height: 1.5;
}

.footer-link-strong {
  color: #F4F1EA;
  font-size: 1.125rem;
  font-weight: 500;
}
.footer-link-strong:hover,
.footer-link-strong:focus-visible {
  color: #FFFFFF;
}

.footer-links a {
  color: #E5E1D8;
  font-size: 1rem;
  line-height: 1.5;
}
.footer-links a:hover,
.footer-links a:focus-visible {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--s-2);
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: center;
  align-items: center;
}
.footer-meta {
  font-size: 0.875rem;
  color: #8C8A80;
  margin: 0;
}

/* ---------- Reveal-on-scroll (subtle) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 480ms var(--ease), transform 480ms var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* =========================================================
   Tablet (>= 768px)
   ========================================================= */
@media (min-width: 768px) {
  .container { padding-inline: var(--s-4); }

  .section { padding-block: var(--s-9); }

  .hide-on-mobile { display: inline-flex; }

  .hero {
    min-height: 86vh;
    padding-block: var(--s-8) var(--s-7);
  }

  .hero-cta {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: var(--s-5);
  }
  .hero-cta .btn {
    width: auto;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.44fr);
    align-items: end;
    gap: var(--s-6);
  }

  .hero-side-card {
    display: block;
    padding: var(--s-4);
    justify-self: end;
  }

  .card {
    padding: var(--s-4);
  }

  .carousel-track > .card {
    flex: 0 0 calc((100% - var(--s-2)) / 2);
  }

  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--s-6);
  }
  .about-media img { aspect-ratio: 5 / 4; }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: var(--s-7);
  }
  .contact-form { padding: var(--s-5); }

  .footer-inner {
    grid-template-columns: 1.3fr 1fr 1fr 0.8fr;
    align-items: start;
    gap: var(--s-5);
    text-align: left;
    justify-items: stretch;
  }

  .footer-brand {
    grid-template-columns: auto 1fr;
    justify-content: start;
    justify-items: start;
    text-align: left;
    max-width: none;
  }

  .footer-intro {
    text-align: left;
  }

  .footer-col {
    justify-items: start;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--s-3);
    text-align: left;
  }
}

/* =========================================================
   Desktop (>= 1024px)
   — Multi-card grid replaces mobile carousel
   ========================================================= */
@media (min-width: 1024px) {
  :root { --header-h: 84px; }

  .nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--s-4);
  }

  .nav-toggle { display: none; }
  .mobile-menu { display: none !important; }

  .section { padding-block: var(--s-10); }
  .section-head { margin-bottom: var(--s-7); }

  .hero { min-height: 92vh; }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: var(--s-7);
  }

  /* Convert carousels to grids on desktop */
  .carousel-track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--s-3);
    overflow: visible;
    scroll-snap-type: none;
    padding-bottom: 0;
  }
  .carousel-track > .card {
    flex: initial;
    scroll-snap-align: none;
    width: auto;
  }
  .why .carousel-track { grid-template-columns: repeat(4, 1fr); }
  .reviews .carousel-track { grid-template-columns: repeat(2, 1fr); }
  .carousel-dots { display: none; }
}

/* =========================================================
   Reduced motion
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}