/* fpio-main.css — Fleetpio base styles */

/* ─── Custom Properties ─── */
:root {
  --bg-dark-1: #0F1A20;
  --bg-dark-2: #162330;
  --bg-dark-alt: #1C2E3A;
  --bg-light-1: #F4F6F7;
  --bg-light-2: #EAF0F3;
  --bg-white: #FFFFFF;
  --accent-primary: #00C5B0;
  --accent-secondary: #00A896;
  --accent-warm: #E07B39;
  --heading: #E8EFF2;
  --body-text: #B8CDD5;
  --caption: #7A9BAB;
  --heading-on-light: #0F1A20;
  --body-on-light: #2C4455;
  --caption-on-light: #4A6978;
  --border-dark: #2A3F4D;
  --border-light: #C8D8E0;

  --font-heading: 'DM Serif Display', Georgia, serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --container-max: 1200px;
  --container-pad: clamp(1.25rem, 4vw, 3rem);
  --section-pad: clamp(60px, 8vw, 110px);
  --nav-height: 72px;
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.625;
  color: var(--body-on-light);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
address { font-style: normal; }

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 400; }
h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); line-height: 1.1; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.25rem); line-height: 1.2; }
h3 { font-family: var(--font-body); font-size: 1.375rem; line-height: 1.4; font-weight: 600; }
h4 { font-family: var(--font-body); font-size: 1.125rem; line-height: 1.45; font-weight: 600; }

/* ─── Container ─── */
.fpio-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--container-pad);
}

/* ─── Section backgrounds ─── */
.fpio-section--dark    { background: var(--bg-dark-1); }
.fpio-section--dark-alt{ background: var(--bg-dark-alt); }
.fpio-section--dark-2  { background: var(--bg-dark-2); }
.fpio-section--light   { background: var(--bg-light-1); }
.fpio-section--light-alt{ background: var(--bg-light-2); }
.fpio-section--white   { background: var(--bg-white); }

/* ─── Section padding ─── */
.fpio-section { padding-block: var(--section-pad); }
.fpio-section--compact { padding-block: clamp(40px, 5vw, 70px); }

/* ─── Navigation ─── */
.fpio-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background 0.25s ease, box-shadow 0.25s ease;
}
.fpio-nav--transparent { background: transparent; }
.fpio-nav--scrolled {
  background: var(--bg-dark-1);
  box-shadow: 0 1px 0 var(--border-dark);
}
.fpio-nav--light-scrolled {
  background: var(--bg-white);
  box-shadow: 0 1px 0 var(--border-light);
}

.fpio-nav__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--container-pad);
}

.fpio-nav__logo { display: flex; align-items: center; flex-shrink: 0; text-decoration: none; }
.fpio-nav__logo img { height: 36px; width: auto; }

.fpio-nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.fpio-nav .fpio-nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
  text-decoration: none;
}

.fpio-nav--dark-top .fpio-nav__link,
.fpio-nav--transparent .fpio-nav__link {
  color: var(--body-text);
}
.fpio-nav--dark-top .fpio-nav__link:hover,
.fpio-nav--transparent .fpio-nav__link:hover {
  color: var(--heading);
  background: rgba(255,255,255,0.06);
}
.fpio-nav--scrolled .fpio-nav__link {
  color: var(--body-text);
}
.fpio-nav--scrolled .fpio-nav__link:hover {
  color: var(--heading);
  background: rgba(255,255,255,0.06);
}

.fpio-nav--light-top .fpio-nav__link {
  color: var(--body-on-light);
}
.fpio-nav--light-top .fpio-nav__link:hover {
  color: var(--heading-on-light);
  background: var(--bg-light-2);
}
.fpio-nav--light-scrolled .fpio-nav__link {
  color: var(--body-on-light);
}
.fpio-nav--light-scrolled .fpio-nav__link:hover {
  color: var(--heading-on-light);
  background: var(--bg-light-2);
}

.fpio-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: 1.25rem;
  flex-shrink: 0;
}

.fpio-nav__signin {
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
  padding: 0.5rem 0.75rem;
}
.fpio-nav--dark-top .fpio-nav__signin,
.fpio-nav--scrolled .fpio-nav__signin { color: var(--body-text); }
.fpio-nav--dark-top .fpio-nav__signin:hover,
.fpio-nav--scrolled .fpio-nav__signin:hover { color: var(--heading); }
.fpio-nav--light-top .fpio-nav__signin,
.fpio-nav--light-scrolled .fpio-nav__signin { color: var(--body-on-light); }
.fpio-nav--light-top .fpio-nav__signin:hover,
.fpio-nav--light-scrolled .fpio-nav__signin:hover { color: var(--heading-on-light); }

/* ─── Hamburger ─── */
.fpio-nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  margin-left: auto;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.fpio-nav__hamburger span {
  display: block;
  height: 2px;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.fpio-nav--dark-top .fpio-nav__hamburger span,
.fpio-nav--scrolled .fpio-nav__hamburger span { background: var(--heading); }
.fpio-nav--light-top .fpio-nav__hamburger span,
.fpio-nav--light-scrolled .fpio-nav__hamburger span { background: var(--heading-on-light); }

.fpio-nav__hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.fpio-nav__hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.fpio-nav__hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Mobile menu ─── */
.fpio-nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: var(--bg-dark-1);
  border-top: 1px solid var(--border-dark);
  padding: 1.25rem var(--container-pad) 2rem;
  z-index: 999;
  flex-direction: column;
  gap: 0.25rem;
}
.fpio-nav__mobile.is-open { display: flex; }
.fpio-nav__mobile .fpio-nav__link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--body-text);
  font-size: 1rem;
  font-weight: 500;
  border-radius: 6px;
  text-decoration: none;
}
.fpio-nav__mobile .fpio-nav__link:hover { background: var(--bg-dark-alt); color: var(--heading); }
.fpio-nav__mobile .fpio-btn--primary {
  margin-top: 1rem;
  display: block;
  text-align: center;
}
.fpio-nav__mobile-light {
  background: var(--bg-white);
  border-top: 1px solid var(--border-light);
}
.fpio-nav__mobile-light .fpio-nav__link { color: var(--body-on-light); }
.fpio-nav__mobile-light .fpio-nav__link:hover { background: var(--bg-light-2); color: var(--heading-on-light); }

/* ─── Buttons ─── */
.fpio-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9375rem;
  line-height: 1;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
}
.fpio-btn:hover { transform: translateY(-1px); }
.fpio-btn:active { transform: translateY(0); }

.fpio-btn--primary {
  background: var(--accent-primary);
  color: var(--bg-dark-1);
  border-color: var(--accent-primary);
}
.fpio-btn--primary:hover { background: #00d9c3; border-color: #00d9c3; color: var(--bg-dark-1); }

.fpio-btn--primary-sm {
  background: var(--accent-primary);
  color: var(--bg-dark-1);
  border-color: var(--accent-primary);
  font-size: 0.875rem;
  padding: 0.625rem 1.25rem;
}
.fpio-btn--primary-sm:hover { background: #00d9c3; border-color: #00d9c3; color: var(--bg-dark-1); }

.fpio-btn--outline-dark {
  background: transparent;
  color: var(--heading);
  border-color: var(--border-dark);
}
.fpio-btn--outline-dark:hover { border-color: var(--accent-primary); color: var(--accent-primary); }

.fpio-btn--outline-light {
  background: transparent;
  color: var(--heading-on-light);
  border-color: var(--border-light);
}
.fpio-btn--outline-light:hover { border-color: var(--accent-secondary); color: var(--accent-secondary); }

.fpio-btn--ghost-dark {
  background: transparent;
  color: var(--heading);
  border-color: transparent;
}
.fpio-btn--ghost-dark:hover { background: rgba(255,255,255,0.08); color: var(--heading); }

.fpio-btn--ghost-light {
  background: transparent;
  color: var(--heading-on-light);
  border-color: transparent;
}
.fpio-btn--ghost-light:hover { background: var(--bg-light-2); color: var(--heading-on-light); }

.fpio-btn--warm {
  background: var(--accent-warm);
  color: #fff;
  border-color: var(--accent-warm);
}
.fpio-btn--warm:hover { background: #e88a4d; border-color: #e88a4d; color: #fff; }

.fpio-btn--lg {
  font-size: 1.0625rem;
  padding: 0.9375rem 2rem;
}

/* ─── Section label ─── */
.fpio-label {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-primary);
  display: block;
  margin-bottom: 0.75rem;
}
.fpio-label--on-light { color: var(--accent-secondary); }

/* ─── Footer ─── */
.fpio-footer {
  background: var(--bg-dark-1);
  border-top: 1px solid var(--border-dark);
  padding-top: 64px;
  padding-bottom: 40px;
}
.fpio-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--container-pad);
}
.fpio-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem 2rem;
  margin-bottom: 3rem;
}
.fpio-footer__brand { grid-column: 1; }
.fpio-footer__brand-logo { margin-bottom: 1rem; }
.fpio-footer__brand-logo img { height: 34px; width: auto; }
.fpio-footer__brand p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--caption);
  max-width: 280px;
}
.fpio-footer__col-title {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--heading);
  margin-bottom: 1rem;
}
.fpio-footer__col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.fpio-footer__col ul li a {
  font-size: 0.9rem;
  color: var(--caption);
  transition: color 0.2s;
  text-decoration: none;
}
.fpio-footer__col ul li a:hover { color: var(--heading); }
.fpio-footer__bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.fpio-footer__copy {
  font-size: 0.875rem;
  color: var(--caption);
  line-height: 1.5;
}
.fpio-footer__cookie-link {
  font-size: 0.875rem;
  color: var(--caption);
  text-decoration: underline;
  transition: color 0.2s;
}
.fpio-footer__cookie-link:hover { color: var(--heading); }

/* ─── Cookie Banner ─── */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 9999;
  background: var(--bg-dark-2);
  border-top: 1px solid var(--border-dark);
  padding: 1rem var(--container-pad);
}
.cookie-banner__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.cookie-banner__text {
  flex: 1;
  font-size: 0.9rem;
  color: var(--body-text);
  min-width: 200px;
}
.cookie-banner__text a { color: var(--accent-primary); text-decoration: underline; }
.cookie-banner__actions { display: flex; gap: 0.75rem; flex-shrink: 0; }
.cookie-banner__btn {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  border: none;
  color: var(--bg-dark-1);
  background: var(--accent-primary);
}
.cookie-banner__btn:hover { background: #00d9c3; color: var(--bg-dark-1); }

/* ─── Hero base ─── */
.fpio-hero {
  position: relative;
  padding-top: calc(var(--nav-height) + clamp(60px, 8vw, 100px));
  padding-bottom: clamp(60px, 8vw, 100px);
  overflow: hidden;
}
.fpio-hero--dark {
  background: var(--bg-dark-1);
}
.fpio-hero--light {
  background: var(--bg-light-1);
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 60px;
}

/* ─── Stats bar ─── */
.fpio-stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}
.fpio-stats-bar__item {
  background: var(--bg-dark-alt);
  padding: 2rem 1.5rem;
  text-align: center;
  border-right: 1px solid var(--border-dark);
}
.fpio-stats-bar__item:last-child { border-right: none; }
.fpio-stats-bar__value {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--accent-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
  display: block;
}
.fpio-stats-bar__label {
  font-size: 0.875rem;
  color: var(--body-text);
  line-height: 1.4;
}

/* ─── CTA Band ─── */
.fpio-cta-band {
  background: var(--bg-dark-1);
  padding-block: clamp(60px, 7vw, 90px);
  text-align: center;
}
.fpio-cta-band h2 { color: var(--heading); margin-bottom: 1rem; }
.fpio-cta-band p { color: var(--body-text); font-size: 1.125rem; margin-bottom: 2rem; max-width: 560px; margin-inline: auto; }
.fpio-cta-band .fpio-btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ─── Card ─── */
.fpio-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 1.75rem;
  transition: box-shadow 0.2s;
}
.fpio-card:hover { box-shadow: 0 6px 24px rgba(0,0,0,0.07); }
.fpio-card--dark {
  background: var(--bg-dark-alt);
  border-color: var(--border-dark);
}
.fpio-card--dark h3 { color: var(--heading); }
.fpio-card--dark p { color: var(--body-text); }
.fpio-card--dark li { color: var(--body-text); }

/* ─── Step number ─── */
.fpio-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-primary);
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.75rem;
}

/* ─── Divider ─── */
.fpio-divider {
  height: 1px;
  background: var(--border-light);
  margin: 0;
}
.fpio-divider--dark { background: var(--border-dark); }

/* ─── Sensor mock ─── */
.fpio-sensor-mock {
  background: var(--bg-dark-2);
  border: 1px solid var(--border-dark);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--body-text);
  overflow-x: auto;
}
.fpio-sensor-mock .key { color: var(--caption); }
.fpio-sensor-mock .val-num { color: #79d4c5; }
.fpio-sensor-mock .val-str { color: #f0b86a; }
.fpio-sensor-mock .val-warn { color: #e07b39; }
.fpio-sensor-mock .val-ok { color: var(--accent-primary); }
.fpio-sensor-mock .comment { color: var(--border-dark); }

/* ─── Testimonial ─── */
.fpio-testimonial {
  border-left: 3px solid var(--accent-primary);
  padding: 1.5rem 2rem;
  background: var(--bg-white);
  border-radius: 0 8px 8px 0;
}
.fpio-testimonial blockquote {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--body-on-light);
  margin-bottom: 1rem;
  font-style: italic;
}
.fpio-testimonial__meta { display: flex; align-items: center; gap: 0.875rem; }
.fpio-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--bg-dark-alt);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-primary);
  flex-shrink: 0;
  letter-spacing: 0.04em;
}
.fpio-testimonial__name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--heading-on-light);
}
.fpio-testimonial__role {
  font-size: 0.8125rem;
  color: var(--caption-on-light);
}

/* ─── Section header ─── */
.fpio-section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}
.fpio-section-header h2 { margin-bottom: 1rem; }
.fpio-section-header p { font-size: 1.125rem; }

/* ─── Two-col ─── */
.fpio-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 4rem;
  align-items: center;
}
.fpio-two-col--60-40 { grid-template-columns: 3fr 2fr; }
.fpio-two-col--40-60 { grid-template-columns: 2fr 3fr; }
.fpio-two-col--flip > *:first-child { order: 2; }
.fpio-two-col--flip > *:last-child  { order: 1; }

/* ─── Feature list ─── */
.fpio-feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.fpio-feature-list__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.fpio-feature-list__icon {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: rgba(0, 197, 176, 0.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-primary);
  flex-shrink: 0;
  font-size: 1rem;
}
.fpio-feature-list__icon--light {
  background: rgba(0, 168, 150, 0.1);
  color: var(--accent-secondary);
}
.fpio-feature-list__text h4 { margin-bottom: 0.25rem; }

/* ─── Inline SVG diagrams ─── */
.fpio-diagram { width: 100%; }
.fpio-diagram svg { width: 100%; height: auto; }

/* ─── Utilities ─── */
.fpio-text-center { text-align: center; }
.fpio-mb-1 { margin-bottom: 0.75rem; }
.fpio-mb-2 { margin-bottom: 1.5rem; }
.fpio-mb-3 { margin-bottom: 2.5rem; }
.fpio-mt-2 { margin-top: 1.5rem; }
.fpio-mt-3 { margin-top: 2.5rem; }

.fpio-btn-group {
  display: flex;
  gap: 0.875rem;
  flex-wrap: wrap;
}

/* ─── Page theme body classes ─── */
.fpio-page--dark-top { background: var(--bg-dark-1); }
.fpio-page--light-top { background: var(--bg-white); }

/* ─── Auth form ─── */
.fpio-auth-form { width: 100%; }

/* ─── Contact form container ─── */
.fpio-contact-form { width: 100%; }

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

/* ─── Fade-in animation ─── */
.fpio-fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fpio-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .fpio-footer__grid { grid-template-columns: 1fr 1fr 1fr; }
  .fpio-footer__brand { grid-column: 1 / -1; }
  .fpio-two-col { gap: 2rem 2.5rem; }
}

@media (max-width: 768px) {
  .fpio-nav__links,
  .fpio-nav__actions { display: none; }
  .fpio-nav__hamburger { display: flex; }
  .fpio-two-col { grid-template-columns: 1fr; }
  .fpio-two-col--flip > *:first-child { order: 0; }
  .fpio-two-col--flip > *:last-child  { order: 0; }
  .fpio-stats-bar { grid-template-columns: 1fr 1fr; }
  .fpio-stats-bar__item { border-right: none; border-bottom: 1px solid var(--border-dark); }
  .fpio-footer__grid { grid-template-columns: 1fr 1fr; }
  .fpio-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 480px) {
  .fpio-stats-bar { grid-template-columns: 1fr; }
  .fpio-footer__grid { grid-template-columns: 1fr; }
}