/* =====================================================================
   Mosaic Data Partners — Design system
   Palantir-esque: dark, sharp, technical, data-viz motifs, cyan accent
   ===================================================================== */

:root {
  /* Palette */
  --bg-0:   #060A0F;   /* deep base */
  --bg-1:   #0A1118;   /* page bg */
  --bg-2:   #0F1820;   /* card bg */
  --bg-3:   #14202B;   /* raised card */
  --line:   #1B2A37;   /* hairline borders */
  --line-2: #2A3E50;
  --text:   #E6F6FF;   /* primary text */
  --text-2: #9FB6CC;   /* secondary text */
  --text-3: #6A8294;   /* muted */
  --accent: #00C2FF;   /* electric cyan */
  --accent-2:#0077B6;  /* darker cyan */
  --accent-glow: rgba(0,194,255,0.18);
  --warn:   #F5B400;
  --good:   #10B981;
  --danger: #FF5C7A;

  /* Type */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Layout */
  --container: 1200px;
  --container-tight: 920px;
  --radius: 10px;
  --radius-sm: 6px;

  color-scheme: dark;
}

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

body {
  background: var(--bg-1);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Grid backdrop — subtle technical motif */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0,194,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,194,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at top, rgba(0,0,0,0.9), transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at top, rgba(0,0,0,0.9), transparent 70%);
}

/* Skip to content for a11y */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #001220;
  padding: 8px 14px;
  font-weight: 600;
  z-index: 1000;
}
.skip-link:focus { left: 12px; top: 12px; }

/* Typography */
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.01em; margin: 0 0 0.5em; line-height: 1.15; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.45rem); }
h4 { font-size: 1rem; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); font-weight: 600; }
p  { margin: 0 0 1em; color: var(--text-2); }
a  { color: var(--accent); text-decoration: none; transition: color .15s ease; }
a:hover { color: #66DDFF; text-decoration: underline; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.lede {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.6;
  color: var(--text-2);
  max-width: 64ch;
}

.mono { font-family: var(--font-mono); }

/* Layout */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}
.container--tight { max-width: var(--container-tight); }

section { padding: clamp(64px, 9vw, 120px) 0; position: relative; }
section.tight { padding: clamp(48px, 6vw, 80px) 0; }
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2), transparent);
}

/* ============== Header / Nav ============== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(10,17,24,0.72);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 28px;
  max-width: var(--container);
  margin: 0 auto;
}
.nav__brand { display: flex; align-items: center; gap: 0; }
.nav__brand img, .nav__brand object { height: 36px; width: auto; display: block; }
.nav__links { display: flex; gap: 28px; align-items: center; }
.nav__links a {
  color: var(--text-2);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--text); }
.nav__cta { margin-left: 8px; }

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 8px 12px;
  cursor: pointer;
}
@media (max-width: 820px) {
  .nav__links { display: none; }
  .nav__toggle { display: inline-flex; }
  .nav.is-open .nav__links {
    display: flex;
    position: absolute;
    top: 72px;
    left: 0; right: 0;
    background: var(--bg-2);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 16px 28px 24px;
    gap: 16px;
  }
}

/* ============== Buttons ============== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.3px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, color .15s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--accent);
  color: #001220;
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn--primary:hover {
  background: #2BD4FF;
  color: #001220;
  box-shadow: 0 0 0 6px var(--accent-glow);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-2);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--lg { padding: 16px 28px; font-size: 15px; }

.arrow { display: inline-block; transition: transform .15s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ============== Hero ============== */
.hero {
  padding: clamp(80px, 12vw, 160px) 0 clamp(64px, 10vw, 120px);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content:"";
  position: absolute;
  inset: auto -10% -40% -10%;
  height: 70%;
  background: radial-gradient(ellipse at center, var(--accent-glow), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 .underline {
  position: relative;
  white-space: nowrap;
}
.hero h1 .underline::after {
  content:"";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 4px;
  background: var(--accent);
  opacity: 0.85;
}
.hero__ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}
.hero__meta {
  margin-top: 36px;
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.hero__meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero__meta .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
}

/* Hero visual: animated data tessellation */
.hero__visual {
  position: relative;
  aspect-ratio: 1/1;
  max-width: 520px;
  margin-left: auto;
}
.hero__visual svg { width: 100%; height: 100%; display: block; }

/* ============== Service cards ============== */
.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 760px) { .services { grid-template-columns: 1fr; } }

.svc {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
  overflow: hidden;
}
.svc::after {
  content:"";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, var(--accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}
.svc:hover { border-color: var(--accent-2); transform: translateY(-2px); background: var(--bg-3); }
.svc:hover::after { opacity: 1; }

.svc__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(0,194,255,0.15), rgba(0,119,182,0.08));
  border: 1px solid var(--line-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent);
}
.svc h3 { margin: 0 0 10px; }
.svc p  { margin: 0; color: var(--text-2); }
.svc__more {
  display: inline-flex;
  margin-top: 18px;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* ============== Stat block ============== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
}
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  padding: 28px 24px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: none; }
@media (max-width: 760px) {
  .stat:nth-child(2n) { border-right: none; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
.stat__num {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  display: block;
}
.stat__num .unit { color: var(--accent); font-size: 0.55em; font-weight: 600; margin-left: 2px; letter-spacing: 0; }
.stat__lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 4px;
}

/* ============== Approach (process steps) ============== */
.approach {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 900px) { .approach { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 520px) { .approach { grid-template-columns: 1fr; } }

.step {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}
.step__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 12px;
}
.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p  { font-size: 0.95rem; margin: 0; }

/* ============== Stack / Tech tags ============== */
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.5px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--text-2);
}
.tag:hover { border-color: var(--accent-2); color: var(--text); }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
@media (max-width: 820px) { .stack-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 460px) { .stack-grid { grid-template-columns: 1fr; } }

.stack-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.stack-card h4 {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 2.5px;
  margin-bottom: 14px;
}
.stack-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stack-card li {
  color: var(--text-2);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.stack-card li::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============== Testimonial ============== */
.testimonial {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(36px, 6vw, 64px);
  position: relative;
  max-width: 920px;
  margin: 0 auto;
}
.testimonial::before {
  content: "\201C";
  position: absolute;
  top: 8px; left: 24px;
  font-size: 120px;
  color: var(--accent);
  opacity: 0.18;
  font-family: Georgia, serif;
  line-height: 1;
}
.testimonial blockquote {
  margin: 0;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.65;
  color: var(--text);
  font-weight: 400;
}
.testimonial blockquote p { color: var(--text); margin-bottom: 1em; }
.testimonial blockquote p:last-of-type { margin-bottom: 0; }
.testimonial__attr {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
}
.testimonial__attr::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--accent);
}

/* ============== CTA band ============== */
.cta-band {
  background:
    radial-gradient(ellipse at 30% 50%, var(--accent-glow), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(40px, 6vw, 72px);
  text-align: center;
}
.cta-band h2 { margin-bottom: 16px; }
.cta-band p  { max-width: 60ch; margin-left: auto; margin-right: auto; }
.cta-band__ctas { display: inline-flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 24px; }

/* ============== Footer ============== */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  margin-top: 80px;
  background: var(--bg-0);
}
.site-footer .container {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
}
@media (max-width: 820px) { .site-footer .container { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .site-footer .container { grid-template-columns: 1fr; } }

.site-footer h5 {
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.site-footer a { color: var(--text-2); font-size: 14px; }
.site-footer a:hover { color: var(--text); }

.footer__brand p { color: var(--text-3); font-size: 14px; max-width: 32ch; }
.footer__legal {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 24px;
  font-size: 12px;
  color: var(--text-3);
  font-family: var(--font-mono);
  letter-spacing: 1px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============== Forms ============== */
.form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
}
.field input,
.field select,
.field textarea {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 13px 14px;
  font-family: var(--font-sans);
  font-size: 15px;
  width: 100%;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.field__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .field__row { grid-template-columns: 1fr; } }

.form__msg {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  display: none;
}
.form__msg--ok  { display: block; background: rgba(16,185,129,0.08); border: 1px solid var(--good); color: var(--good); }
.form__msg--err { display: block; background: rgba(255,92,122,0.08); border: 1px solid var(--danger); color: var(--danger); }

/* ============== Insights / Blog list ============== */
.posts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
@media (max-width: 900px) { .posts { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px) { .posts { grid-template-columns: 1fr; } }

.post-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color .15s ease, transform .15s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.post-card:hover { border-color: var(--accent-2); transform: translateY(-2px); text-decoration: none; }
.post-card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
}
.post-card h3 { margin: 0; color: var(--text); font-size: 1.15rem; }
.post-card p { color: var(--text-2); margin: 0; font-size: 0.95rem; }

.empty-state {
  text-align: center;
  padding: 60px 24px;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius);
  background: var(--bg-2);
}
.empty-state h3 { color: var(--text); }
.empty-state p  { color: var(--text-2); }

/* ============== Page header (used on inner pages) ============== */
.page-header {
  padding: clamp(80px, 9vw, 140px) 0 clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 20% 0%, var(--accent-glow), transparent 50%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
}
.page-header h1 { margin-bottom: 16px; }
.page-header p  { font-size: 1.1rem; max-width: 64ch; }

/* ============== Two-col content (services detail) ============== */
.svc-detail {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 56px;
  padding: clamp(48px, 6vw, 80px) 0;
  border-bottom: 1px solid var(--line);
}
.svc-detail:last-child { border-bottom: none; }
@media (max-width: 820px) { .svc-detail { grid-template-columns: 1fr; gap: 24px; } }

.svc-detail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
}
.svc-detail h2 { margin: 8px 0 16px; }
.svc-detail ul.deliverables {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
}
@media (max-width: 560px) { .svc-detail ul.deliverables { grid-template-columns: 1fr; } }
.svc-detail ul.deliverables li {
  color: var(--text-2);
  padding-left: 22px;
  position: relative;
  font-size: 0.95rem;
}
.svc-detail ul.deliverables li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 12px; height: 2px;
  background: var(--accent);
}

/* ============== Utility ============== */
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 36px; }
.mt-5 { margin-top: 56px; }
.mb-0 { margin-bottom: 0; }
.mb-3 { margin-bottom: 24px; }
.mb-5 { margin-bottom: 56px; }

.muted { color: var(--text-3); }
.eyebrow-only { display: block; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: 16px; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Focus states */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Selection */
::selection { background: var(--accent); color: #001220; }