/* ============================================================
   RubySDK — public landing page styles
   Same brand as the investor page (rubysdk.com palette):
   ruby gradient #420F14 -> #C5545E, solid ruby accent
   #C5545E (hover #A23B45), white page, near-black text,
   clean sans throughout. Tokens live in :root so future
   tweaks stay a one-file change.
   ============================================================ */

:root {
  --ruby-deep:  #420F14;  /* darkest ruby — gradient start */
  --ruby:       #C5545E;  /* solid ruby accent            */
  --ruby-hover: #A23B45;  /* deeper ruby — hover           */
  --ink:        #1A1516;  /* near-black body text          */
  --paper:      #ffffff;  /* white page background         */
  --wash:       #FCF6F6;  /* soft ruby-tinted band wash    */
  --card:       #ffffff;  /* card surface                  */
  --line:       #ece2e3;  /* hairlines / borders           */
  --muted:      #6e6e73;  /* secondary text                */
  --on-dark:    #fdf7f7;  /* text on ruby/dark surfaces    */
  --on-dark-dim:#d8b9bd;  /* dim text on dark              */

  --ruby-grad:  linear-gradient(115deg, var(--ruby-deep) 0%, var(--ruby) 100%);

  --sans:  ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --maxw: 860px;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(66, 15, 20, 0.04), 0 8px 28px rgba(66, 15, 20, 0.07);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { font-family: var(--sans); font-weight: 600; line-height: 1.2; color: var(--ink); letter-spacing: -0.01em; }
a { color: var(--ruby); }

/* ---------- Header ---------- */
.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 18px;
  padding-bottom: 18px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.wordmark img { height: 34px; width: auto; display: block; }
.ask-link {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 999px;
  white-space: nowrap;
  transition: border-color .15s ease, color .15s ease;
}
.ask-link:hover { color: var(--ruby); border-color: var(--ruby); }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(120% 100% at 100% 0%, var(--wash) 0%, var(--paper) 60%);
  color: var(--ink);
  padding: 72px 0 76px;
  border-bottom: 1px solid var(--line);
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  font-weight: 600;
  color: var(--ruby);
  margin: 0 0 14px;
}
.hero h1 {
  color: var(--ink);
  font-size: 48px;
  margin: 0 0 18px;
  max-width: 16ch;
}
.hero .lede {
  font-size: 19px;
  color: var(--muted);
  max-width: 58ch;
  margin: 0 0 30px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

/* ---------- What we do ---------- */
.what { padding: 64px 0; }
.section-head { margin: 0 0 32px; }
.section-head h2 { font-size: 30px; margin: 0 0 8px; }
.section-head p { color: var(--muted); margin: 0; max-width: 60ch; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 24px;
}
.feature h3 {
  font-size: 18px;
  margin: 0 0 8px;
}
.feature h3::before {
  content: "";
  display: block;
  width: 32px;
  height: 4px;
  border-radius: 999px;
  background: var(--ruby-grad);
  margin: 0 0 14px;
}
.feature p { margin: 0; color: var(--muted); font-size: 15.5px; }

/* ---------- Signup ---------- */
.signup { padding: 8px 0 64px; }
.signup-card {
  background: var(--ruby-grad);
  color: var(--on-dark);
  border-radius: var(--radius);
  padding: 44px 40px;
  box-shadow: var(--shadow);
}
.signup-card h2 { color: var(--on-dark); font-size: 28px; margin: 0 0 8px; }
.signup-lede { color: var(--on-dark-dim); margin: 0 0 26px; max-width: 52ch; }

.signup-form { max-width: 520px; }
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--on-dark);
}
.field .optional { color: var(--on-dark-dim); font-weight: 400; }
.field input {
  width: 100%;
  font: inherit;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(253, 247, 247, 0.24);
  background: rgba(255, 255, 255, 0.10);
  color: var(--on-dark);
}
.field input::placeholder { color: rgba(216, 185, 189, 0.75); }
.field input:focus {
  outline: none;
  border-color: var(--on-dark);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.22);
}

.btn-primary {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border: 0;
  border-radius: 10px;
  padding: 13px 22px;
  background: #ffffff;
  color: var(--ruby-deep);
  transition: background .15s ease, color .15s ease;
}
.btn-primary:hover { background: var(--wash); }

.form-error { color: #ffd6d6; font-size: 14px; margin: 12px 0 0; }

.signup-done { padding: 12px 0 4px; }
.done-tick {
  width: 52px; height: 52px; line-height: 52px; text-align: center;
  margin: 0 0 14px;
  border-radius: 50%;
  background: #ffffff;
  color: var(--ruby);
  font-size: 26px;
  font-weight: 700;
}
.signup-done h3 { color: var(--on-dark); font-size: 22px; margin: 0 0 6px; }
.signup-done p { color: var(--on-dark-dim); margin: 0; }

/* ---------- Ask CTA ---------- */
.ask-cta { padding: 0 0 72px; text-align: center; }
.ask-cta h2 { font-size: 26px; margin: 0 0 10px; }
.ask-cta p { color: var(--muted); margin: 0 0 20px; max-width: 52ch; margin-left: auto; margin-right: auto; }
.btn-outline {
  display: inline-block;
  font-weight: 600;
  text-decoration: none;
  color: var(--ruby);
  border: 1.5px solid var(--ruby);
  border-radius: 10px;
  padding: 13px 24px;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-outline:hover { background: var(--ruby); color: #ffffff; border-color: var(--ruby); }
.btn-solid {
  display: inline-block;
  font-weight: 600;
  text-decoration: none;
  color: #ffffff;
  background: var(--ruby-grad);
  border: 0;
  border-radius: 10px;
  padding: 13px 24px;
  transition: filter .15s ease;
}
.btn-solid:hover { filter: brightness(1.06); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--on-dark-dim);
  padding: 44px 0;
}
.foot-mark {
  font-weight: 600;
  font-size: 18px;
  color: var(--on-dark);
  margin: 0 0 8px;
}
.foot-note { font-size: 14px; margin: 0 0 10px; max-width: 62ch; }
.foot-links { font-size: 14px; margin: 0 0 12px; }
.foot-links a { color: var(--on-dark); text-decoration: none; }
.foot-links a:hover { text-decoration: underline; }
.foot-copy { font-size: 13px; margin: 0; color: rgba(216, 185, 189, 0.6); }

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  body { font-size: 16px; }
  .hero { padding: 48px 0 52px; }
  .hero h1 { font-size: 36px; }
  .hero .lede { font-size: 17px; }
  .signup-card { padding: 30px 24px; }
  .header-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .ask-link { align-self: stretch; text-align: center; }
}