/* Optimind Systems — shared styles */
/* ============================================================
   STYLE GUIDE — design tokens
   Single source of truth for type + spacing across all pages.
   See STYLEGUIDE.md for the full reference and usage rules.
   Change a value here and every page updates together.
   ============================================================ */
:root {
  /* ---- Color ---- */
  --navy: #0b2064;
  --navy-deep: #081745;
  --accent: #5a5af0;
  --accent-2: #7c7cf7;
  --ink: #12203f;
  --muted: #5b6478;
  --line: #e6e9f2;
  --bg: #ffffff;
  --bg-soft: #f6f7fc;

  /* ---- Type scale ---- */
  --fs-display:    clamp(2rem, 5vw, 3.25rem);      /* h1 / hero headline           */
  --fs-h2:         clamp(1.6rem, 3.5vw, 2.25rem);  /* section headline             */
  --fs-h3:         1.2rem;                         /* card / item title            */
  --fs-stat:       clamp(1.9rem, 4vw, 2.6rem);     /* big numeric callouts         */
  --fs-stat-label: clamp(1.35rem, 2.5vw, 1.6rem);  /* word labels used as sub-heads */
  --fs-lead:       1.2rem;                         /* intro / lead paragraph       */
  --fs-body:       1rem;                           /* body copy                    */
  --fs-small:      0.92rem;                        /* captions, meta, list detail  */
  --fs-eyebrow:    0.8rem;                         /* uppercase kicker label       */

  /* ---- Spacing scale ---- */
  --space-section:     104px;  /* vertical padding for a standard section */
  --space-section-sm:  72px;   /* same, on narrow screens                 */
  --space-hero-top:    112px;  /* hero top padding                        */
  --space-hero-bottom: 96px;   /* hero bottom padding                     */
  --space-head:        60px;   /* gap below a section-head block          */
  --gap:               32px;   /* standard grid gutter                    */

  /* ---- Shape ---- */
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11, 32, 100, 0.08);
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { color: var(--navy); line-height: 1.2; margin: 0 0 0.5em; }
h1 { font-size: var(--fs-display); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.01em; }
h3 { font-size: var(--fs-h3); }
p { margin: 0 0 1em; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 96px;
}
.nav .brand img { height: 52px; display: block; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--ink);
  font-weight: 500;
  font-size: 0.98rem;
}
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.nav-links a.active { color: var(--navy); font-weight: 600; }
.nav-links a.btn-primary { color: #fff; }
.nav-links a.btn-primary:hover { color: #fff; text-decoration: none; }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.06s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary {
  background: var(--navy);
  color: #fff;
}
.btn-primary:hover { background: var(--navy-deep); text-decoration: none; box-shadow: var(--shadow); }
.btn-ghost {
  background: transparent;
  color: var(--navy);
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 40px;
  height: 40px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 400px at 85% -10%, rgba(90, 90, 240, 0.14), transparent 60%),
    linear-gradient(180deg, #fff 0%, var(--bg-soft) 100%);
  padding: var(--space-hero-top) 0 var(--space-hero-bottom);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero-figure img {
  width: 100%;
  height: auto;
  display: block;
}
.eyebrow .lc { text-transform: lowercase; }
.hero .eyebrow {
  display: inline-block;
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(90, 90, 240, 0.08);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero p.lead {
  font-size: var(--fs-lead);
  color: var(--muted);
  max-width: 560px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }

/* ---------- Sections ---------- */
section { padding: var(--space-section) 0; }
.section-soft { background: var(--bg-soft); }
.section-navy { background: var(--navy); color: #dfe4f5; }
.section-navy h2, .section-navy h3 { color: #fff; }

.section-head { max-width: 720px; margin-bottom: var(--space-head); }
.section-head .eyebrow {
  font-size: var(--fs-eyebrow); font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent);
}
.section-head p { color: var(--muted); font-size: 1.08rem; }

/* ---------- Grid + cards ---------- */
.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); margin: 0; }

.icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(90, 90, 240, 0.1);
  color: var(--accent);
  font-size: 1.3rem; font-weight: 700;
  margin-bottom: 16px;
}

/* stat callouts — word labels acting as sub-heads under the section h2 */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.stat .num {
  font-size: var(--fs-stat-label);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.section-navy .stat .label { color: #aeb8e0; font-size: var(--fs-small); }

/* team */
.team { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); }
.member { background:#fff; border:1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.member-head { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.member-photo {
  width: 76px; height: 76px; border-radius: 50%; object-fit: cover;
  flex: 0 0 auto; background: var(--bg-soft); border: 2px solid #fff;
  box-shadow: 0 2px 10px rgba(11,32,100,0.12);
}
.member-photo.placeholder {
  display: grid; place-items: center; color: var(--accent);
  background: rgba(90,90,240,0.1); font-weight: 700; font-size: 1.5rem;
}
.member .name { font-weight: 700; color: var(--navy); font-size: 1.15rem; }
.member .role { color: var(--accent); font-weight: 600; font-size: 0.92rem; }
.member ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 0.95rem; }
.member ul li { margin-bottom: 4px; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); counter-reset: step; }
.step { position: relative; padding-top: 8px; }
.step .n {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--navy); color: #fff; font-weight: 700;
  display: grid; place-items: center; margin-bottom: 14px;
}

/* CTA band */
.cta-band { text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #c7cdeb; max-width: 560px; margin: 0 auto 24px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-deep);
  color: #aeb8e0;
  padding: 44px 0;
  font-size: 0.95rem;
}
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.site-footer a { color: #cdd4f0; }
.footer-links { display: flex; gap: 22px; }

/* utilities */
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.lead-narrow { max-width: 640px; }

/* ---------- Proof / stat band (light) ---------- */
.proof-band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; padding: 40px 0; }
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.proof .num {
  font-size: var(--fs-stat);
  font-weight: 800; color: var(--navy); letter-spacing: -0.02em; line-height: 1.05;
}
.proof .num .accent { color: var(--accent); }
.proof .label { color: var(--muted); font-size: var(--fs-small); margin-top: 6px; }
.proof-note { color: var(--muted); font-size: 0.85rem; margin-top: 22px; }
.proof-divider { width: 1px; background: var(--line); }

/* ---------- Before / after comparison ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }
.compare .col {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: #fff;
}
.compare .col.after { border-color: rgba(90,90,240,0.35); box-shadow: var(--shadow); }
.compare .tag {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 12px;
}
.compare .col.after .tag { color: var(--accent); }
.compare .big { font-size: 2rem; font-weight: 800; color: var(--navy); letter-spacing: -0.02em; }
.compare .col.after .big { color: var(--accent); }
.compare .desc { color: var(--muted); font-size: 0.95rem; margin: 6px 0 0; }
.case-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); margin-top: 28px; }
.case-metric .m-num { font-size: var(--fs-stat); font-weight: 800; color: var(--navy); letter-spacing: -0.02em; }
.case-metric .m-num .accent { color: var(--accent); }
.case-metric .m-label { color: var(--muted); font-size: 0.92rem; margin-top: 4px; }

/* ---------- Trust list ---------- */
.trust-item { display: flex; gap: 14px; align-items: flex-start; }
.trust-item .check {
  flex: 0 0 auto; width: 28px; height: 28px; border-radius: 8px;
  background: rgba(90,90,240,0.1); color: var(--accent);
  display: grid; place-items: center; font-weight: 700; font-size: 0.9rem; margin-top: 2px;
}
.trust-item h3 { font-size: 1.05rem; margin: 0 0 4px; }
.trust-item p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero p.lead { max-width: none; }
  .grid-3, .grid-4, .steps, .stats, .case-metrics { grid-template-columns: repeat(2, 1fr); }
  .team { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 96px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--line);
    padding: 12px 0 20px;
    z-index: 49;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 11px 24px; }
  .nav-links a.btn-primary {
    display: block;
    margin: 8px 24px 0;
    text-align: center;
  }
  .grid-2, .grid-3, .grid-4, .steps, .stats,
  .proof-grid, .compare, .case-metrics { grid-template-columns: 1fr; }
  section { padding: var(--space-section-sm) 0; }
  .hero { padding: var(--space-section-sm) 0 56px; }
}