/* ==========================================================================
   Cumulus Technology Limited — site styles
   Design language: clearing skies. Deep sky blues, layered cloud shapes,
   left-aligned confident type, checklist-style service list instead of
   generic shadow cards.
   ========================================================================== */

:root {
  /* Color */
  --deep-sky: #1b4b8f;      /* primary brand blue — stays constant, used for solid fills (buttons, avatars, CTA) */
  --accent: #1b4b8f;        /* brand blue used for text/icons/links on the page background — brightens in dark mode */
  --cumulus: #5b9bd9;       /* atmospheric accent blue */
  --clear-wash: #eef4fb;    /* pale sky section wash */
  --ink: #16233a;           /* body text, near-navy */
  --slate: #5b6b82;         /* secondary text */
  --line: #d8e3f0;          /* hairline borders */
  --white: #ffffff;         /* always literal white — used for text sitting on solid brand-blue fills */
  --body-bg: #ffffff;       /* page background */
  --header-bg: rgba(255, 255, 255, 0.92);
  --input-bg: #ffffff;

  /* Type */
  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  /* Layout */
  --max-width: 1120px;
  --gutter: 24px;
  --radius: 10px;
}

/* ---- Dark theme ---- */
:root[data-theme="dark"] {
  --accent: #7cb2f2;
  --clear-wash: #121b2e;
  --ink: #eaeff7;
  --slate: #9fb0c7;
  --line: #263252;
  --body-bg: #0b1220;
  --header-bg: rgba(11, 18, 32, 0.86);
  --input-bg: #121b2e;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--body-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 200ms ease, color 200ms ease;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; margin: 0; }
p { margin: 0 0 1em; max-width: 62ch; }
ul { margin: 0; padding: 0; list-style: none; }

/* Visible keyboard focus everywhere */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--cumulus);
  outline-offset: 2px;
}

@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;
  }
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--deep-sky);
  color: var(--white);
  padding: 12px 18px;
  border-radius: 0 0 8px 0;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
  top: 0;
}

/* ---- Layout helpers ---- */
.wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: 88px;
}
.section--wash { background: var(--clear-wash); transition: background-color 200ms ease; }
.eyebrow-free-heading {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  max-width: 20ch;
}
.section-lede {
  color: var(--slate);
  font-size: 1.1rem;
  max-width: 58ch;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  padding: 13px 26px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.btn--primary {
  background: var(--deep-sky);
  color: var(--white);
}
.btn--primary:hover { background: #143c72; transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn--ghost:hover { background: var(--deep-sky); color: var(--white); }

/* ---- Header / Nav ---- */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--header-bg);
  backdrop-filter: blur(6px);
  z-index: 50;
  transition: background-color 200ms ease, border-color 200ms ease;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 16px;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--ink);
}
.brand img { height: 40px; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a:not(.btn) {
  text-decoration: none;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  padding-block: 4px;
}
.nav-links a.btn {
  color: var(--white);
}
.nav-links a[aria-current="page"] { color: var(--accent); }
.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--accent);
  transition: right 160ms ease;
}
.nav-links a:not(.btn):hover::after,
.nav-links a[aria-current="page"]:not(.btn)::after { right: 0; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle svg { width: 26px; height: 26px; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 38px;
  height: 38px;
  padding: 0;
  cursor: pointer;
  color: var(--ink);
  transition: background-color 160ms ease, border-color 160ms ease;
}
.theme-toggle:hover { background: var(--clear-wash); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

@media (max-width: 780px) {
  .nav-toggle { display: block; }
  .brand { font-size: 1.2rem; gap: 8px; }
  .brand img { height: 32px; }
  .nav-links {
    position: absolute;
    inset: 100% 0 auto 0;
    background: var(--body-bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 16px var(--gutter) 24px;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding-block: 10px; width: 100%; }
}
@media (max-width: 380px) {
  .brand span { display: none; }
}

/* ---- Hero ---- */
.hero {
  padding-block: 72px 96px;
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  max-width: 16ch;
}
.hero .section-lede { font-size: 1.2rem; margin-top: 20px; }
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.hero-art {
  position: relative;
  aspect-ratio: 4 / 3;
}
.hero-art svg { width: 100%; height: 100%; }
.hero-art .cloud-a { animation: drift-a 14s ease-in-out infinite; }
.hero-art .cloud-b { animation: drift-b 18s ease-in-out infinite; }
.hero-art .cloud-c { animation: drift-c 22s ease-in-out infinite; }
@keyframes drift-a { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(6px); } }
@keyframes drift-b { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(-8px); } }
@keyframes drift-c { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(5px); } }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 420px; margin-inline: auto; }
}

/* ---- Trust strip ---- */
.trust-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.trust-strip ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-block: 28px;
}
.trust-strip li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-weight: 500;
  font-size: 0.98rem;
}
.trust-strip svg { width: 22px; height: 22px; flex-shrink: 0; color: var(--accent); }
@media (max-width: 780px) {
  .trust-strip ul { grid-template-columns: repeat(2, 1fr); }
}

/* ---- Audience tabs (business / home) ---- */
.audience-tabs {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  margin-bottom: 32px;
}
.audience-tab {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 22px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--slate);
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease;
}
.audience-tab.is-active {
  background: var(--deep-sky);
  color: var(--white);
}
@media (max-width: 480px) {
  .audience-tabs { display: flex; }
  .audience-tab { flex: 1; padding: 10px 12px; text-align: center; }
}

/* ---- Checklist-style service list (not shadow cards) ---- */
.service-list {
  border-top: 1px solid var(--line);
}
.service-row {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  align-items: start;
  padding-block: 28px;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  padding-left: 20px;
  transition: border-left-color 160ms ease;
}
.service-row:hover { border-left-color: var(--cumulus); }
.service-row .icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--clear-wash);
  color: var(--accent);
}
.service-row .icon svg { width: 22px; height: 22px; }
.service-row h3 { font-size: 1.15rem; margin-bottom: 6px; }
.service-row p { margin: 0; color: var(--slate); }
.service-row .includes {
  margin-top: 10px;
  color: var(--ink);
}
.service-row .includes li {
  font-size: 0.92rem;
  padding-left: 18px;
  position: relative;
  margin-bottom: 4px;
}
.service-row .includes li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cumulus);
}
@media (max-width: 700px) {
  .service-row { grid-template-columns: 40px 1fr; }
}

/* ---- Cloud divider ---- */
.cloud-divider {
  display: block;
  width: 100%;
  height: auto;
  color: var(--clear-wash);
}

/* ---- Two column feature ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.feature-grid h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-grid p { color: var(--slate); margin: 0; }
@media (max-width: 780px) {
  .feature-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ---- People / about ---- */
.people-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.person-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
}
.person-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--deep-sky);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  margin-bottom: 18px;
}
.person-card h3 { font-size: 1.2rem; margin-bottom: 4px; }
.person-role { color: var(--cumulus); font-weight: 600; font-size: 0.92rem; margin-bottom: 14px; }
@media (max-width: 700px) {
  .people-grid { grid-template-columns: 1fr; }
}

/* ---- Values list ---- */
.values-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 40px;
}
.values-list h3 { font-size: 1.05rem; margin-bottom: 6px; }
.values-list p { color: var(--slate); margin: 0; }
@media (max-width: 700px) {
  .values-list { grid-template-columns: 1fr; }
}

/* ---- CTA banner ---- */
.cta-banner {
  background: var(--deep-sky);
  color: var(--white);
  border-radius: 18px;
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-banner h2 { color: var(--white); max-width: 18ch; }
.cta-banner .btn--primary { background: var(--white); color: var(--deep-sky); }
.cta-banner .btn--primary:hover { background: var(--clear-wash); }

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-detail {
  display: flex;
  gap: 14px;
  margin-bottom: 22px;
}
.contact-detail svg { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; margin-top: 3px; }
.contact-detail h3 { font-size: 1rem; margin-bottom: 4px; }
.contact-detail p, .contact-detail a { color: var(--slate); text-decoration: none; }
.contact-detail a:hover { color: var(--accent); }

.field {
  margin-bottom: 20px;
}
.extra-fields {
  border-left: 2px solid var(--line);
  padding-left: 16px;
  margin-bottom: 4px;
}
.field label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 6px;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--ink);
  transition: background-color 200ms ease, border-color 160ms ease;
}
.field select { appearance: auto; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--cumulus);
}
.form-status {
  font-size: 0.92rem;
  margin-top: 12px;
  min-height: 1.2em;
}
.form-status[data-state="success"] { color: #1a7a42; }
.form-status[data-state="error"] { color: #b0392a; }

@media (max-width: 780px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--clear-wash);
  padding-block: 48px 32px;
  transition: background-color 200ms ease, border-color 200ms ease;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: var(--ink); margin-bottom: 10px; }
.footer-brand img { height: 32px; width: auto; }
.footer-grid p { color: var(--slate); font-size: 0.92rem; }
.footer-col h4 { font-size: 0.92rem; margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { text-decoration: none; color: var(--slate); font-size: 0.92rem; }
.footer-col a:hover { color: var(--accent); }
.social-link { display: inline-flex; align-items: center; gap: 8px; }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--slate);
}
@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ---- Page header (non-home pages) ---- */
.page-header {
  padding-block: 56px 40px;
}
.page-header h1 { font-size: clamp(2rem, 4vw, 2.8rem); max-width: 18ch; }
.page-header .section-lede { margin-top: 16px; }