/* =========================================================
   RapidHMI — landing page styles
   Brand: deep slate + cyan/teal "signal" accent
   ========================================================= */

:root {
  --bg:        #0b1018;
  --bg-2:      #0f1622;
  --surface:   #131c2b;
  --surface-2: #18243a;
  --line:      #243248;
  --text:      #e7edf5;
  --muted:     #9aacc4;
  --muted-2:   #6f819b;
  --accent:    #2dd4bf;   /* teal signal */
  --accent-2:  #38bdf8;   /* cyan        */
  --accent-ink:#04211e;
  --danger:    #f59e0b;
  --radius:    14px;
  --radius-sm: 9px;
  --maxw:      1140px;
  --shadow:    0 18px 40px -22px rgba(0,0,0,.75);
  --font:      'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono:      'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }

.brand-accent { color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-weight: 600;
  font-size: .98rem;
  padding: .8rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-sm { padding: .55rem 1.05rem; font-size: .9rem; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-ink);
  box-shadow: 0 10px 24px -10px rgba(45,212,191,.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -12px rgba(45,212,191,.7); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,16,24,.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 66px;
}
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; }
.brand-mark { display: block; }
.nav-links {
  display: flex;
  gap: 1.6rem;
  margin-left: auto;
  font-size: .95rem;
  color: var(--muted);
}
.nav-links a { transition: color .15s ease; }
.nav-links a:hover { color: var(--text); }
.site-header .btn-primary { margin-left: .25rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1100px 500px at 78% -8%, rgba(56,189,248,.16), transparent 60%),
    radial-gradient(900px 460px at 8% 12%, rgba(45,212,191,.14), transparent 58%),
    var(--bg);
  border-bottom: 1px solid var(--line);
}
.hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(900px 500px at 60% 10%, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 3rem;
  align-items: center;
  padding: 5.5rem 24px 5rem;
}
.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(45,212,191,.1);
  border: 1px solid rgba(45,212,191,.3);
  padding: .35rem .8rem;
  border-radius: 999px;
  margin-bottom: 1.4rem;
}
.hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  font-weight: 800;
  margin-bottom: 1.2rem;
}
.lede { font-size: 1.18rem; color: var(--muted); max-width: 38ch; margin: 0 0 2rem; }
.lede em { color: var(--text); font-style: normal; font-weight: 600; }
.hero-actions { display: flex; gap: .9rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.hero-note { font-size: .9rem; color: var(--muted-2); max-width: 46ch; }

.hero-visual { display: flex; justify-content: center; }
.hero-panel {
  width: 100%;
  max-width: 540px;
  height: auto;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,.55));
  border-radius: var(--radius);
}

/* ---------- Pain strip ---------- */
.strip {
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
}
.strip-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding: 1.6rem 24px;
}
.strip-quote {
  margin: 0;
  font-family: var(--mono);
  font-size: .92rem;
  color: var(--muted);
  border-left: 2px solid var(--accent);
  padding-left: .9rem;
}

/* ---------- Sections ---------- */
.section { padding: 5.5rem 0; }
.section-alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 60ch; margin-bottom: 3rem; }
.kicker {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .9rem;
}
.section h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 800; margin-bottom: 1rem; }
.section-sub { font-size: 1.1rem; color: var(--muted); margin: 0; }

/* ---------- Cards (problem) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.4rem;
  transition: transform .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(45,212,191,.4); }
.card-ico { font-size: 1.6rem; margin-bottom: .8rem; }
.card h3 { font-size: 1.08rem; margin-bottom: .5rem; }
.card p { margin: 0; color: var(--muted); font-size: .96rem; }

/* ---------- Flow ---------- */
.flow {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  padding: 0;
  margin: 0 0 3rem;
}
.flow-step {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .55rem 1rem .55rem .55rem;
  font-weight: 600;
  font-size: .95rem;
}
.flow-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--accent);
  font-family: var(--mono);
  font-size: .85rem;
}
.flow-step.is-final {
  background: linear-gradient(135deg, rgba(45,212,191,.18), rgba(56,189,248,.18));
  border-color: rgba(45,212,191,.5);
}
.flow-step.is-final .flow-n { background: var(--accent); color: var(--accent-ink); }

.solution-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.sp {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.sp h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.sp p { margin: 0; color: var(--muted); font-size: .96rem; }

/* ---------- Features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  position: relative;
  overflow: hidden;
}
.feature::before {
  content: "";
  position: absolute; top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: .8;
}
.feature h3 { font-size: 1.02rem; margin-bottom: .45rem; }
.feature p { margin: 0; color: var(--muted); font-size: .92rem; }

/* ---------- Users ---------- */
.pill-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  padding: 0;
  margin: 0 0 3rem;
}
.pill-list li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .55rem 1.1rem;
  font-size: .95rem;
  color: var(--text);
}
.benefits-title { font-size: 1.2rem; margin-bottom: 1.2rem; }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .8rem;
}
.benefits-grid span {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: .8rem 1rem;
  font-size: .92rem;
  color: var(--muted);
}
.benefits-grid span::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
}

/* ---------- Glossary ---------- */
.glossary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem;
  margin: 0;
}
.gl-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem;
}
.gl-item dt {
  font-weight: 700;
  font-size: 1.02rem;
  margin-bottom: .4rem;
  color: var(--text);
}
.gl-item dd {
  margin: 0;
  color: var(--muted);
  font-size: .96rem;
}

/* ---------- Roadmap ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}
.tl-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem;
  position: relative;
}
.tl-item.is-now { border-color: rgba(45,212,191,.5); box-shadow: var(--shadow); }
.tl-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted-2);
  background: var(--surface-2);
  border-radius: 999px;
  padding: .25rem .7rem;
  margin-bottom: .9rem;
}
.tl-item.is-now .tl-tag { color: var(--accent-ink); background: var(--accent); }
.tl-item h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.tl-item p { margin: 0; color: var(--muted); font-size: .94rem; }

/* ---------- CTA ---------- */
.cta {
  background:
    radial-gradient(800px 380px at 50% 0%, rgba(45,212,191,.16), transparent 60%),
    var(--bg-2);
  text-align: center;
}
.cta-inner { max-width: 56ch; margin: 0 auto; }
.cta h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); margin-bottom: 1rem; }
.cta p { color: var(--muted); font-size: 1.1rem; margin: 0 auto 2rem; }
.cta-actions { display: flex; gap: .9rem; justify-content: center; flex-wrap: wrap; margin-bottom: 1.4rem; }
.cta-fine { font-size: .88rem; color: var(--muted-2); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg);
  padding: 3rem 0 1.6rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr auto;
  gap: 1.5rem;
  align-items: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}
.footer-brand { display: flex; align-items: center; gap: .55rem; font-weight: 800; font-size: 1.15rem; }
.footer-tag { margin: 0; color: var(--muted); font-size: .95rem; }
.footer-links { display: flex; gap: 1.3rem; font-size: .92rem; color: var(--muted); }
.footer-links a:hover { color: var(--accent); }
.footer-base {
  display: flex;
  justify-content: space-between;
  padding-top: 1.4rem;
  font-size: .85rem;
  color: var(--muted-2);
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; padding-top: 4rem; }
  .hero-visual { order: -1; }
  .lede, .hero-note { max-width: none; }
  .cards, .feature-grid, .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-inner { grid-template-columns: repeat(2, 1fr); }
  .solution-points, .timeline { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; text-align: left; }
}
@media (max-width: 620px) {
  .nav-links { display: none; }
  .cards, .feature-grid, .benefits-grid, .glossary,
  .strip-inner, .solution-points, .timeline { grid-template-columns: 1fr; }
  .section { padding: 4rem 0; }
  .footer-base { flex-direction: column; gap: .4rem; }
}

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