/* ==========================================================================
   The Logic Center — logiccenter.ai
   Clean corporate light theme built around the Logic Center brand:
   Navy   #0B2350   (logo "LOGIC")
   Blue   #1E63AB   (logo "CENTER" / wing)
   ========================================================================== */

:root {
  --navy: #0b2350;
  --navy-deep: #071834;
  --blue: #1e63ab;
  --blue-bright: #2e7cd6;
  --blue-pale: #eaf1fa;
  --ink: #16233b;
  --muted: #4a5872;
  --bg: #ffffff;
  --bg-alt: #f4f7fb;
  --border: #e3e9f2;
  --success: #0f7b4d;
  --success-bg: #e6f5ee;
  --pending: #92600a;
  --pending-bg: #fdf3df;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(11, 35, 80, 0.05), 0 8px 24px rgba(11, 35, 80, 0.07);
  --shadow-hover: 0 2px 4px rgba(11, 35, 80, 0.06), 0 16px 40px rgba(11, 35, 80, 0.13);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-size: 16.5px;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-bright); }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--navy); color: #fff;
  padding: 10px 18px; border-radius: 0 0 8px 0; z-index: 200;
}
.skip-link:focus { left: 0; color: #fff; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 3px solid #15437e;
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px; gap: 24px;
}
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand img { height: 46px; width: auto; }

.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a {
  color: var(--ink); font-weight: 500; font-size: 15.5px;
  transition: color 0.15s ease;
}
.site-nav a:hover { color: var(--blue); }
.site-nav .btn-login { color: #fff; }
.site-nav .btn-login:hover { color: #fff; }

.btn {
  display: inline-block; font-weight: 600; font-size: 15.5px;
  border-radius: 10px; padding: 12px 24px; line-height: 1.3;
  transition: all 0.18s ease; border: 1px solid transparent; cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--blue); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-outline { border-color: var(--border); color: var(--navy); background: #fff; }
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.btn-lg { padding: 15px 32px; font-size: 16.5px; }

.btn-login { padding: 10px 20px; font-size: 14.5px; }

.nav-toggle {
  display: none; background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2.5px; background: var(--navy);
  margin: 5px 0; border-radius: 2px; transition: 0.2s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #f2f7fd 0%, #fbfdff 70%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
}
.hero .container {
  position: relative; z-index: 2;
  padding-top: 96px; padding-bottom: 104px; max-width: 900px; text-align: center;
}
.hero-mark {
  position: absolute; right: -115px; top: 50%; transform: translateY(-50%);
  width: 448px; opacity: 0.05; z-index: 1; pointer-events: none;
}
.eyebrow {
  display: inline-block; font-size: 13.5px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--blue);
  background: var(--blue-pale); border-radius: 100px; padding: 7px 18px;
  margin-bottom: 26px;
}
h1 {
  font-size: clamp(2.3rem, 5.4vw, 3.6rem); line-height: 1.12;
  letter-spacing: -0.025em; color: var(--navy); font-weight: 800;
  margin-bottom: 22px;
}
h1 .accent { color: var(--blue); }
.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--muted);
  max-width: 640px; margin: 0 auto 38px;
}
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 660px; margin: 0 auto 56px; text-align: center; }
h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.35rem); letter-spacing: -0.02em;
  color: var(--navy); font-weight: 800; line-height: 1.2; margin-bottom: 14px;
}
.section-head p { color: var(--muted); font-size: 1.08rem; }

/* ---------- Products section: deep blue band ---------- */
#products { background: #15437e; border-top: 1px solid #0f3766; border-bottom: 1px solid #0f3766; }
#products h2 { color: #ffffff; }
#products .section-head p { color: #cddcf0; }
#products .card-next { border-color: #5b7cad; }
#products .card-next h3 { color: #ffffff; }
#products .card-next p.desc { color: #c3d4ea; }
#products .card-next .glyph-next { background: transparent; border-color: #5b7cad; color: #cddcf0; }
#products .card-next .product-tag { color: #9cc4f0; }
#products .card-next .product-link { color: #9cc4f0; }
#products .product-card:hover { border-color: #9cc4f0; }

/* ---------- Product cards ---------- */
.product-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 26px;
}
.product-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 30px 30px; display: flex; flex-direction: column;
  box-shadow: var(--shadow); transition: all 0.2s ease; position: relative;
}
.product-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: #cfdcee; }
.product-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.product-glyph {
  width: 54px; height: 54px; border-radius: 13px; display: flex;
  align-items: center; justify-content: center; font-weight: 800; font-size: 20px;
  color: #fff; letter-spacing: 0.02em;
}
.glyph-tms { background: linear-gradient(135deg, #0b2350, #1e63ab); }
.glyph-snow { background: linear-gradient(135deg, #1e63ab, #4aa3e8); }
.glyph-fleet { background: linear-gradient(135deg, #33415e, #0b2350); }
.product-mark {
  width: 54px; height: 54px; border-radius: 13px; object-fit: cover;
  display: block; box-shadow: inset 0 0 0 1px rgba(11, 35, 80, 0.06);
}
.product-mark.mark-contain { object-fit: contain; background: var(--blue-pale); padding: 7px; }
.glyph-next {
  background: #fff; border: 2px dashed #c4d2e6; color: var(--blue);
  font-size: 26px; font-weight: 600;
}
.status-pill {
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 100px;
}
.status-live { color: var(--success); background: var(--success-bg); }
.status-soon { color: var(--pending); background: var(--pending-bg); }
.product-card h3 { font-size: 1.32rem; color: var(--navy); letter-spacing: -0.01em; margin-bottom: 4px; }
.product-tag { font-size: 13.5px; font-weight: 600; color: var(--blue); margin-bottom: 12px; }
.product-card p.desc { color: var(--muted); font-size: 15.5px; flex-grow: 1; margin-bottom: 22px; }
.product-link { font-weight: 600; font-size: 15.5px; display: inline-flex; align-items: center; gap: 6px; }
.product-link .arrow { transition: transform 0.15s ease; }
.product-link:hover .arrow { transform: translateX(3px); }
.product-link.disabled { color: var(--muted); cursor: default; pointer-events: none; }
.card-next { border-style: dashed; box-shadow: none; background: transparent; }
.card-next:hover { transform: none; box-shadow: none; }

/* ---------- Value props ---------- */
.value-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; }
.value-item { text-align: left; }
.value-icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--blue-pale);
  color: var(--blue); display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.value-icon svg { width: 24px; height: 24px; }
.value-item h3 { font-size: 1.12rem; color: var(--navy); margin-bottom: 8px; }
.value-item p { color: var(--muted); font-size: 15.5px; }

/* ---------- About band / stats ---------- */
.about-band .container {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 70px; align-items: center;
}
.about-band h2 { margin-bottom: 18px; }
.about-band p { color: var(--muted); margin-bottom: 16px; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stat {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow);
}
.stat .num { font-size: 2rem; font-weight: 800; color: var(--navy); letter-spacing: -0.02em; line-height: 1.1; }
.stat .lbl { font-size: 14px; color: var(--muted); font-weight: 500; margin-top: 4px; }

/* ---------- CTA / contact ---------- */
.cta-panel {
  background: linear-gradient(120deg, var(--navy-deep), var(--navy) 55%, #123a78);
  border-radius: 20px; padding: 68px 48px; text-align: center; color: #fff;
  position: relative; overflow: hidden;
}
.cta-panel h2 { color: #fff; }
.cta-panel p { color: #b9c9e4; max-width: 560px; margin: 0 auto 32px; font-size: 1.06rem; }
.cta-panel .btn-primary { background: #fff; color: var(--navy); }
.cta-panel .btn-primary:hover { background: var(--blue-pale); color: var(--navy); }
.cta-mark { position: absolute; left: -80px; bottom: -120px; width: 380px; opacity: 0.07; pointer-events: none; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 60px 0 40px; background: var(--bg-alt); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.footer-brand img { height: 42px; width: auto; margin-bottom: 14px; }
.footer-brand p { color: var(--muted); font-size: 14.5px; max-width: 300px; }
.site-footer h4 {
  font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--navy); margin-bottom: 14px;
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; }
.site-footer li a { color: var(--muted); font-size: 15px; }
.site-footer li a:hover { color: var(--blue); }
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 10px;
  background: #fff; border: 1px solid var(--border); color: var(--muted);
  transition: all 0.15s ease;
}
.footer-social a:hover { color: #fff; background: var(--blue); border-color: var(--blue); }
.footer-social svg { width: 17px; height: 17px; fill: currentColor; }

.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  color: var(--muted); font-size: 14px;
}

/* ---------- Inner pages (about / login / 404) ---------- */
.page-hero {
  background: linear-gradient(180deg, #f2f7fd, #ffffff);
  border-bottom: 1px solid var(--border); padding: 76px 0 60px; text-align: center;
}
.page-hero p { color: var(--muted); max-width: 620px; margin: 12px auto 0; font-size: 1.1rem; }
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 { font-size: 1.6rem; margin: 44px 0 14px; }
.prose h2:first-child { margin-top: 0; }
.prose p { color: #33415e; margin-bottom: 18px; font-size: 1.05rem; }
.prose ul { margin: 0 0 18px 22px; color: #33415e; }
.prose li { margin-bottom: 8px; }

.login-wrap {
  min-height: calc(100vh - 76px); display: flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, #f2f7fd, #ffffff); padding: 60px 24px;
}
.login-card {
  background: #fff; border: 1px solid var(--border); border-radius: 18px;
  box-shadow: var(--shadow-hover); padding: 44px 40px; width: 100%; max-width: 430px;
  text-align: center;
}
.login-card .mark { width: 74px; margin: 0 auto 18px; }
.login-card h1 { font-size: 1.6rem; margin-bottom: 6px; }
.login-card .sub { color: var(--muted); font-size: 15px; margin-bottom: 30px; }
.field { text-align: left; margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: 14px; color: var(--navy); margin-bottom: 7px; }
.field input {
  width: 100%; border: 1.5px solid var(--border); border-radius: 10px;
  padding: 13px 15px; font-size: 15.5px; font-family: var(--font); color: var(--ink);
  transition: border-color 0.15s ease; background: #fbfcfe;
}
.field input:focus { outline: none; border-color: var(--blue); background: #fff; box-shadow: 0 0 0 3px rgba(30, 99, 171, 0.12); }
.login-note {
  margin-top: 22px; font-size: 13.5px; color: var(--muted);
  background: var(--bg-alt); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px;
  display: none;
}
.login-note.show { display: block; }
.login-card .back { display: inline-block; margin-top: 22px; font-size: 14.5px; }

.error-wrap { text-align: center; padding: 120px 24px; }
.error-wrap .code { font-size: 5rem; font-weight: 800; color: var(--blue-pale); line-height: 1; -webkit-text-stroke: 2px var(--blue); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-band .container { grid-template-columns: 1fr; gap: 44px; }
}
@media (max-width: 760px) {
  .site-nav {
    position: fixed; inset: 76px 0 auto 0; background: #fff;
    flex-direction: column; gap: 0; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-hover); display: none; padding: 10px 0 18px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 13px 24px; width: 100%; text-align: center; }
  .site-nav .btn-login { margin: 10px 24px 0; width: calc(100% - 48px); }
  .nav-toggle { display: block; }
  .section { padding: 68px 0; }
  .hero .container { padding-top: 68px; padding-bottom: 74px; }
  .cta-panel { padding: 52px 26px; }
  .stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .brand img { height: 38px; }
}