/* ---------------------------------------------------------------
   Prismatic Enterprises — site styles
   System fonts, no JS, mobile-first.
   Design language: structural, border-heavy, "blueprint not balloon".
   --------------------------------------------------------------- */

:root {
  /* Colour palette */
  --bg: #ffffff;
  --bg-muted: #f7f7f9;
  --ink: #0f1117;          /* near-black, slight blue */
  --ink-soft: #2c2f3a;
  --ink-muted: #5a5f6e;
  --line: #e2e4ea;
  --line-strong: #d4d6de;
  --accent: #6d5fbf;        /* muted violet */
  --accent-ink: #4a3f8c;    /* darker violet for hover/text */
  --accent-soft: #efecfa;

  /* Type stacks */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Inter", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo,
               Consolas, "Liberation Mono", monospace;

  /* Layout */
  --maxw: 1080px;
  --maxw-narrow: 720px;
  --gutter: clamp(20px, 4vw, 32px);
  --section-y: clamp(64px, 9vw, 112px);

  /* Radius */
  --radius: 6px;
  --radius-lg: 8px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.container-narrow { max-width: var(--maxw-narrow); }

.section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.section-muted {
  background: var(--bg-muted);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  margin-bottom: clamp(32px, 5vw, 56px);
  max-width: 720px;
}

/* ---------- Typography ---------- */
h1, h2, h3 {
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 0.5em;
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: -0.03em;
  font-weight: 700;
}

h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  font-weight: 700;
}

h3 {
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  font-weight: 600;
}

p { margin: 0 0 1em; }

a {
  color: var(--accent-ink);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: var(--accent); }

/* Eyebrow & small labels — engineered/technical feel via mono */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.25rem;
  padding-left: 14px;
  position: relative;
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 1px;
  background: var(--accent);
  transform: translateY(-50%);
}

.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--ink-soft);
  max-width: 640px;
  line-height: 1.55;
}

.prose {
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 12px 16px;
  z-index: 100;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.brand:hover { color: var(--ink); }

.brand-mark {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: var(--ink);
  position: relative;
  overflow: hidden;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 70%);
}

.brand-name { font-size: 0.98rem; }

.site-nav {
  display: flex;
  gap: 20px;
  font-size: 0.92rem;
  overflow-x: auto;
  -ms-overflow-style: none;     /* IE/Edge */
  scrollbar-width: none;        /* Firefox */
  padding: 4px 0;
}
.site-nav::-webkit-scrollbar { display: none; }

.site-nav a {
  color: var(--ink-muted);
  font-weight: 500;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--ink); }

@media (min-width: 720px) {
  .site-nav { gap: 28px; font-size: 0.95rem; }
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(72px, 11vw, 140px) 0 clamp(56px, 8vw, 104px);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.hero h1 { max-width: 18ch; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 0.98rem;
  font-weight: 550;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease,
              border-color 0.15s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.btn-primary:hover {
  background: #1d2030;
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-secondary:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.btn .arrow { transition: transform 0.15s ease; }
.btn:hover .arrow { transform: translateX(2px); }

/* ---------- What we do (cards) ---------- */
.cards {
  display: grid;
  gap: 0;
  grid-template-columns: 1fr;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
}
.cards .card + .card {
  border-top: 1px solid var(--line);
}

@media (min-width: 760px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .cards .card + .card {
    border-top: 0;
    border-left: 1px solid var(--line);
  }
}

.card {
  padding: clamp(28px, 4vw, 40px);
  display: flex;
  flex-direction: column;
  background: #fff;
  transition: background 0.15s ease;
}
.card:hover { background: #fcfcfd; }

.card h3 { margin: 0 0 12px; }

.card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: transparent;
  padding: 0;
  margin: 0 0 14px;
  align-self: flex-start;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 6px;
  padding-right: 24px;
}

.card p { color: var(--ink-soft); }

.card-list {
  margin: 8px 0 24px;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
  font-size: 0.97rem;
}
.card-list li {
  position: relative;
  padding: 10px 0 10px 22px;
  border-top: 1px solid var(--line);
}
.card-list li:first-child { border-top: 0; }
.card-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 18px;
  width: 6px;
  height: 6px;
  background: var(--accent);
}

.card-link {
  margin-top: auto;
  font-weight: 550;
  font-size: 0.95rem;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  align-self: flex-start;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.card-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Approach: technical specs grid ---------- */
.specs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
}

@media (min-width: 700px) {
  .specs-grid { grid-template-columns: 1fr 1fr; }
}

.spec {
  padding: clamp(24px, 3vw, 32px);
  border-top: 1px solid var(--line);
}
.spec:nth-child(1),
.spec:nth-child(2) { border-top: 0; }

@media (max-width: 699px) {
  .spec:nth-child(2) { border-top: 1px solid var(--line); }
}

@media (min-width: 700px) {
  .spec:nth-child(odd) { border-right: 1px solid var(--line); }
}

.spec dt {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 12px;
}

.spec-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.spec-label {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.spec dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* ---------- Contact ---------- */
.contact-block { text-align: left; }

.contact-email {
  margin-top: 24px;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 550;
  letter-spacing: -0.01em;
}
.contact-email a {
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}
.contact-email a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.copyright { margin: 0; font-family: var(--font-mono); font-size: 0.82rem; }

.footer-nav {
  display: flex;
  gap: 24px;
}
.footer-nav a {
  color: var(--ink-muted);
  font-weight: 500;
}
.footer-nav a:hover { color: var(--ink); }

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

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

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}