/* ==========================================================================
   Decimal Global LLC — site styles
   Layered on top of Bootstrap 5. All assets are local (no external calls).
   Typeface: IBM Plex Sans (text) + IBM Plex Mono (labels, numbers).
   ========================================================================== */

/* ---- Fonts (bundled locally in /fonts) --------------------------------- */
@font-face {
  font-family: "Plex Sans";
  src: url("../fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Plex Sans";
  src: url("../fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Plex Sans";
  src: url("../fonts/ibm-plex-sans-latin-700-normal.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("../fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("../fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}

/* ---- Design tokens ----------------------------------------------------- */
:root {
  --ink:      #0A2540;   /* deep navy — primary text & dark surfaces        */
  --ink-2:    #12345A;   /* secondary navy                                  */
  --teal:     #0FA3B1;   /* accent, pulled from the cube highlights         */
  --teal-deep:#0B7A85;   /* accent hover / active                           */
  --amber:    #C77D2E;   /* status only (e.g. "in the pipeline")            */
  --paper:    #F6F8FB;   /* page background, cool near-white                */
  --surface:  #FFFFFF;   /* cards, panels                                   */
  --muted:    #5B6B7F;   /* secondary text                                  */
  --line:     #E2E8F0;   /* hairlines / borders                             */
  --line-2:   #CBD5E1;   /* slightly stronger borders                       */

  --sans: "Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --radius: 6px;
  --shadow-sm: 0 1px 2px rgba(10,37,64,.06), 0 2px 8px rgba(10,37,64,.05);
  --shadow-md: 0 6px 24px rgba(10,37,64,.10);
}

/* ---- Base -------------------------------------------------------------- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  /* Subtle isometric-dot grid — a quiet nod to the cube motif. */
  background-image: radial-gradient(rgba(10,37,64,.045) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.015em; color: var(--ink); }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.3rem); line-height: 1.08; }
h2 { font-size: clamp(1.55rem, 3vw, 2.15rem); line-height: 1.15; }
p  { color: var(--ink); }
.lead-muted { color: var(--muted); font-size: 1.1rem; }

a { color: var(--teal-deep); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--ink); }

/* Mono utility: eyebrows, section numbers, labels */
.eyebrow {
  font-family: var(--mono);
  font-weight: 500;
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--teal-deep);
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}
.eyebrow::before {
  content: "";
  width: 1.6rem; height: 1px;
  background: var(--teal); display: inline-block;
}

/* ---- Navbar ------------------------------------------------------------ */
.site-nav {
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-nav .navbar-brand img { height: 34px; width: auto; display: block; }
.site-nav .nav-link {
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--ink) !important;
  padding: .4rem .9rem !important;
  border-radius: 4px;
  position: relative;
}
.site-nav .nav-link:hover { color: var(--teal-deep) !important; }
.site-nav .nav-link.active { color: var(--teal-deep) !important; }
.site-nav .nav-link.active::after {
  content: ""; position: absolute; left: .9rem; right: .9rem; bottom: -1px;
  height: 2px; background: var(--teal);
}
.navbar-toggler { border-color: var(--line-2); }
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(15,163,177,.25); }

.btn-brand {
  background: var(--ink); color: #fff; border: 1px solid var(--ink);
  font-family: var(--mono); font-size: .82rem; letter-spacing: .04em;
  border-radius: 4px; padding: .5rem 1.1rem;
}
.btn-brand:hover { background: var(--teal-deep); border-color: var(--teal-deep); color: #fff; }
.btn-outline-brand {
  background: transparent; color: var(--ink); border: 1px solid var(--line-2);
  font-family: var(--mono); font-size: .82rem; letter-spacing: .04em;
  border-radius: 4px; padding: .5rem 1.1rem;
}
.btn-outline-brand:hover { border-color: var(--teal-deep); color: var(--teal-deep); }

/* ---- Layout helpers ---------------------------------------------------- */
.section { padding: clamp(3rem, 7vw, 6rem) 0; }
.container-tight { max-width: 1080px; }

/* ---- Hero -------------------------------------------------------------- */
.hero {
  background:
    linear-gradient(180deg, rgba(246,248,251,0) 0%, var(--paper) 100%),
    linear-gradient(135deg, #ffffff 0%, #eef3f8 100%);
  border-bottom: 1px solid var(--line);
}
.hero h1 span.accent { color: var(--teal-deep); }
.hero-figure {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
}
.hero-figure img { width: 100%; height: auto; border-radius: 4px; display: block; }
.hero-figure figcaption {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted); margin-top: .9rem;
  display: flex; justify-content: space-between;
}

/* ---- Cards ------------------------------------------------------------- */
.card-svc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  height: 100%;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  position: relative;
  overflow: hidden;
}
.card-svc::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--teal); transform: scaleX(0); transform-origin: left;
  transition: transform .22s ease;
}
.card-svc:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--line-2); }
.card-svc:hover::before { transform: scaleX(1); }
.card-svc .svc-num {
  font-family: var(--mono); font-size: .8rem; color: var(--teal-deep);
  font-weight: 500; letter-spacing: .08em;
}
.card-svc h3 { font-size: 1.25rem; margin: .5rem 0 .6rem; }
.card-svc p { color: var(--muted); margin-bottom: 1rem; }
.card-svc .svc-link {
  font-family: var(--mono); font-size: .8rem; letter-spacing: .04em;
  color: var(--ink); text-decoration: none; font-weight: 500;
}
.card-svc .svc-link:hover { color: var(--teal-deep); }
.card-svc .svc-link::after { content: " \2192"; }

/* ---- Capability / detail list ------------------------------------------ */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.cap-list { list-style: none; margin: 0; padding: 0; }
.cap-list li {
  display: flex; gap: 1rem; align-items: baseline;
  padding: 1rem 1.4rem;
  border-bottom: 1px solid var(--line);
  transition: background .15s ease;
}
.cap-list li:last-child { border-bottom: 0; }
.cap-list li:hover { background: #f2fbfc; }
.cap-list .idx {
  font-family: var(--mono); font-size: .8rem; color: var(--teal-deep);
  min-width: 2.4rem; font-weight: 500;
}
.cap-list .txt { color: var(--ink); }

/* ---- Blog list --------------------------------------------------------- */
.blog-list { list-style: none; margin: 0; padding: 0; }
.blog-list li { border-bottom: 1px solid var(--line); }
.blog-list li:last-child { border-bottom: 0; }
.blog-list a {
  display: flex; gap: 1.1rem; align-items: baseline;
  padding: 1rem 1.4rem; text-decoration: none; color: var(--ink);
  transition: background .15s ease;
}
.blog-list a:hover { background: #f2fbfc; color: var(--ink); }
.blog-list a:hover .b-title { color: var(--teal-deep); }
.blog-list .b-num {
  font-family: var(--mono); font-size: .82rem; color: var(--teal-deep);
  min-width: 2.4rem; font-weight: 500;
}
.blog-list .b-title { flex: 1; }
.blog-list .b-ext {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted); opacity: 0; transition: opacity .15s ease;
}
.blog-list a:hover .b-ext { opacity: 1; }

/* ---- Pipeline / status ------------------------------------------------- */
.badge-pipeline {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--amber);
  border: 1px solid rgba(199,125,46,.35); border-radius: 100px;
  padding: .2rem .7rem; background: rgba(199,125,46,.07);
}

/* ---- Dark band (used for the pipeline section / CTA) ------------------- */
.band-ink {
  background: var(--ink);
  color: #dbe6f2;
  background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 22px 22px;
}
.band-ink h2, .band-ink h3 { color: #fff; }
.band-ink .eyebrow { color: var(--teal); }
.band-ink .eyebrow::before { background: var(--teal); }
.band-ink .pipe-card {
  border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius);
  padding: 1.5rem; background: rgba(255,255,255,.03); height: 100%;
}
.band-ink .pipe-card h3 { font-size: 1.15rem; margin: .8rem 0 .4rem; }
.band-ink .pipe-card p { color: #9db2c9; margin: 0; }

/* ---- Contact form ------------------------------------------------------ */
.form-panel {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-sm);
}
.form-label { font-family: var(--mono); font-size: .78rem; letter-spacing: .05em;
  text-transform: uppercase; color: var(--muted); margin-bottom: .35rem; }
.form-control {
  border: 1px solid var(--line-2); border-radius: 4px; padding: .7rem .85rem;
  color: var(--ink); background: #fff;
}
.form-control:focus {
  border-color: var(--teal); box-shadow: 0 0 0 3px rgba(15,163,177,.18);
}

/* ---- Footer ------------------------------------------------------------ */
.site-footer {
  background: var(--ink); color: #9db2c9;
  border-top: 3px solid var(--teal);
}
.site-footer a { color: #cdddec; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.site-footer .foot-brand { color: #fff; font-weight: 700; letter-spacing: -.01em; }
.site-footer .foot-label {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--teal);
}
.site-footer hr { border-color: rgba(255,255,255,.12); }

/* ---- Accessibility & motion ------------------------------------------- */
:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
  .card-svc:hover { transform: none; }
}