/* ============================================================
   RR Metrics - landing page
   Neutral charcoal system for a self-hosted, open-source trading
   journal. Lime is the brand signal, reserved for signature
   moments (the "R", the primary CTA, the hero render). Green/red
   are reserved for real P/L semantics.
   Type: Space Grotesk (display), IBM Plex Sans (body),
         IBM Plex Mono (data / labels).
   ============================================================ */

/* ---------- self-hosted fonts (no CDN, no telemetry) ---------- */

@font-face {
  font-family: "Space Grotesk";
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
  src: url("fonts/SpaceGrotesk-500.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
  src: url("fonts/IBMPlexSans-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  src: url("fonts/IBMPlexMono-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  src: url("fonts/IBMPlexMono-500.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  src: url("fonts/IBMPlexMono-600.woff2") format("woff2");
}

/* ---------- tokens ---------- */

:root {
  /* neutral charcoal darks */
  --bg:        #0d0e10;
  --bg-2:      #101214;
  --surface:   #15171a;
  --surface-2: #1c1f23;
  --border:    #282c31;
  --border-2:  #373c43;

  /* cool off-white ink */
  --text:  #ecedef;
  --muted: #9aa1a9;
  --faint: #6b7178;

  /* lime - the brand signal (matches the app) */
  --accent:      #c8f542;
  --accent-hi:   #d6fa66;
  --accent-ink:  #101a05; /* dark text on the lime fill */
  --accent-glow: rgba(200, 245, 66, 0.15);
  --accent-wash: rgba(200, 245, 66, 0.05);

  /* P/L semantics - used only for real gains/losses */
  --up:   #56d69a;
  --down: #ef6a6a;

  --sans:    "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --maxw: 1140px;
  --radius: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- reset ---------- */

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

/* <picture> stays layout-transparent, so the <img> remains the flex/grid
   item and every existing `.card-shot img` rule keeps applying unchanged */
picture { display: contents; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  /* faint ledger-grid atmosphere, anchored top */
  background-image:
    radial-gradient(1200px 620px at 78% -8%, var(--accent-wash), transparent 60%),
    linear-gradient(to bottom, var(--bg-2), var(--bg) 620px);
  background-repeat: no-repeat;
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: var(--accent-ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- shared type ---------- */

h1, h2, h3 { font-family: var(--display); text-wrap: balance; }

h1 {
  font-size: clamp(2.6rem, 6.2vw, 4.6rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.025em;
  max-width: 22ch;
}

h3 { line-height: 1.15; letter-spacing: -0.015em; }

.accent { color: var(--accent); }
.mono  { font-family: var(--mono); }

/* tabular numerals everywhere numbers matter */
.tnum { font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }

/* ---------- layout shell ---------- */

.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: 1.5rem; }

main > section { padding-top: clamp(4.5rem, 9vw, 7.5rem); }
/* keep anchored sections clear of the fixed floating nav */
section[id] { scroll-margin-top: 6rem; }

.section-head { margin-bottom: 2.8rem; }
.section-head h2 { margin-top: 1rem; }

/* ---------- nav ---------- */

/* floating rounded glass header, detached from the edges */
.nav {
  position: fixed;
  top: 0.85rem;
  left: 0;
  right: 0;
  z-index: 50;
  width: min(calc(100% - 1.7rem), var(--maxw));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.5rem 0.6rem 0.5rem 1.15rem;
  border-radius: 16px;
  background: color-mix(in srgb, var(--bg) 66%, transparent);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border: 1px solid color-mix(in srgb, var(--border-2) 85%, transparent);
  box-shadow:
    0 14px 36px -16px rgba(0, 0, 0, 0.72),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.nav.stuck {
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  box-shadow:
    0 16px 42px -16px rgba(0, 0, 0, 0.82),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.logo { display: inline-flex; align-items: center; gap: 0.6rem; }
.logo-mark { width: 1.9rem; height: 1.9rem; }
.logo-text {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.7rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}
.nav-links a { color: var(--muted); transition: color 0.15s ease; }
.nav-links a:hover { color: var(--text); }

.nav-github {
  color: var(--text) !important;
  border: 1px solid var(--border-2);
  padding: 0.45rem 0.95rem;
  border-radius: 9px;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.nav-github:hover { border-color: var(--accent); color: var(--accent) !important; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.8rem 1.4rem;
  border-radius: 11px;
  border: 1px solid transparent;
  transition: transform 0.12s var(--ease), background 0.15s ease,
              border-color 0.15s ease, color 0.15s ease, box-shadow 0.2s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 rgba(200, 245, 66, 0);
}
.btn-primary:hover {
  background: var(--accent-hi);
  box-shadow: 0 8px 30px -8px var(--accent-glow);
}
.btn-primary .arw { transition: transform 0.18s var(--ease); }
.btn-primary:hover .arw { transform: translateX(3px); }

.btn-ghost { color: var(--text); border-color: var(--border-2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ============================================================
   HERO
   ============================================================ */

.hero {
  position: relative;
  overflow: hidden;
  min-height: clamp(540px, 78vh, 740px);
  display: flex;
  align-items: center;
  /* generous top padding keeps the headline clear of the floating nav */
  padding-block: clamp(6.5rem, 12vh, 8.5rem) clamp(2.5rem, 5vh, 4rem);
}

/* sculptural equity-ribbon render, anchored to the right so it never crowds the nav or copy */
.hero-bg {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(56%, 820px);
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

/* scrim: blend the image's left edge into the page, darken the top strip for the nav, fade the bottom */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(90deg, var(--bg) 38%, rgba(13, 14, 16, 0.5) 54%, transparent 74%),
    linear-gradient(to bottom, rgba(13, 14, 16, 0.9) 0%, transparent 18%),
    linear-gradient(to bottom, transparent 82%, var(--bg) 100%);
}

.hero-inner { position: relative; z-index: 2; width: 100%; }

.hero-copy { max-width: 34rem; }
.hero-copy h1 { margin: 1.4rem 0 0; }
.hero-copy .lede {
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 40ch;
}
.hero-copy .lede b { color: var(--text); font-weight: 600; }

.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }

/* ledger fact-rail beneath the CTAs */
.fact-rail {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.8rem;
  margin-top: 2.4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.fact { padding: 0.2rem 0; }
.fact-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.2rem;
}
.fact-value {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}
.fact-value.pos { color: var(--up); }

/* ---- proof screenshot ---- */

.proof-section { padding-top: clamp(3rem, 6vw, 5rem); }
.proof { margin: 0; }
.window {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  overflow: hidden;
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.window-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: #2c3036; }
.window-bar .dot:nth-child(1) { background: #3a3f46; }
.window-url {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  margin-left: 0.5rem;
}
.proof .shot {
  box-shadow: 0 50px 90px -50px rgba(0, 0, 0, 0.9);
}
.proof-video { display: block; width: 100%; height: auto; }

/* ============================================================
   FEATURES
   ============================================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s var(--ease),
              box-shadow 0.2s ease;
}
.card:hover {
  border-color: var(--border-2);
  transform: translateY(-3px);
  box-shadow: 0 24px 50px -30px rgba(0, 0, 0, 0.8);
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
.card p { color: var(--muted); font-size: 0.95rem; }

/* wide showcase cards */
.card-wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(260px, 5fr) 7fr;
  align-items: center;
  gap: 2rem;
}
.card-wide .card-copy { padding: 2.6rem 0 2.6rem 2.6rem; }
.card-wide .card-copy h3 { font-size: 1.55rem; }
.card-wide .card-copy .tag {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.9rem;
}
.card-wide .card-shot { align-self: stretch; display: flex; align-items: center; padding: 2rem 0; overflow: hidden; }
.card-wide .card-shot img {
  border: 1px solid var(--border-2);
  border-right: none;
  border-radius: 10px 0 0 10px;
  min-width: 112%;
}

.card-wide-flip { grid-template-columns: 7fr minmax(260px, 5fr); }
.card-wide-flip .card-copy { order: 2; padding: 2.6rem 2.6rem 2.6rem 0; }
.card-wide-flip .card-shot { order: 1; justify-content: flex-end; }
.card-wide-flip .card-shot img {
  border: 1px solid var(--border-2);
  border-left: none;
  border-radius: 0 10px 10px 0;
  min-width: 120%;
}

/* small cards */
.card-small { padding: 0 1.5rem 1.6rem; }
.card-thumb {
  margin: 0 -1.5rem 1.3rem;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  aspect-ratio: 16 / 7;
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

.card-text { padding-top: 1.6rem; }
.card-text h3 { display: flex; align-items: center; gap: 0.55rem; }
.card-text h3::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--faint);
  flex-shrink: 0;
}

/* ============================================================
   BROKERS
   ============================================================ */

.broker-strip {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}
.broker-strip li {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 0.6rem 1.3rem;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.broker-strip li:hover { border-color: var(--accent); color: var(--accent); }
.brokers-note { color: var(--muted); font-size: 0.95rem; margin-top: 1.5rem; max-width: 46ch; }

/* ============================================================
   INSTALL
   ============================================================ */

.terminal { max-width: 820px; margin-top: 2rem; }
.terminal-body {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.2rem;
}
.terminal-body code {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text);
  overflow-x: auto;
  white-space: nowrap;
  flex: 1;
  padding-bottom: 2px;
}
.terminal-body .prompt { color: var(--accent); user-select: none; }

.copy-btn {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: none;
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.copy-btn:hover { border-color: var(--accent); }
.copy-btn.copied { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

.install-note { color: var(--muted); font-size: 0.95rem; margin-top: 1.5rem; max-width: 52ch; }
.install-note code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.4em;
}
.install-note a { color: var(--text); border-bottom: 1px solid var(--border-2); }
.install-note a:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   FAQ
   ============================================================ */

/* ruled two-column list - reads like documentation, which is the
   register this audience already trusts */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 3.5rem;
}
.faq-item {
  padding: 1.7rem 0;
  border-top: 1px solid var(--border);
}
.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}
.faq-item p { color: var(--muted); font-size: 0.95rem; line-height: 1.62; }
.faq-item code {
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.1em 0.4em;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  max-width: var(--maxw);
  margin: clamp(4.5rem, 9vw, 7rem) auto 0;
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-tag { color: var(--muted); font-size: 0.9rem; }
.footer-meta {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.footer-meta a { color: var(--muted); }
.footer-meta a:hover { color: var(--accent); }

/* ============================================================
   scroll reveal (JS adds .in)
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 960px) {
  .faq-grid { grid-template-columns: 1fr; }
  .hero { min-height: clamp(480px, 66vh, 640px); }
  .hero-bg { width: 100%; object-position: 80% center; }
  .hero::after {
    background:
      linear-gradient(90deg, var(--bg) 22%, rgba(13, 14, 16, 0.5) 48%, transparent 76%),
      linear-gradient(to bottom, rgba(13, 14, 16, 0.86) 0%, transparent 16%),
      linear-gradient(to bottom, transparent 76%, var(--bg) 100%);
  }
  .hero-copy { max-width: 40rem; }

  .card-wide, .card-wide-flip { grid-template-columns: 1fr; gap: 0; }
  .card-wide .card-copy, .card-wide-flip .card-copy { order: 1; padding: 2rem 1.6rem 1.4rem; }
  .card-wide .card-shot, .card-wide-flip .card-shot { order: 2; padding: 0 0 0 1.6rem; }
  .card-wide .card-shot img, .card-wide-flip .card-shot img {
    min-width: 0; width: 100%;
    border: 1px solid var(--border-2); border-right: none; border-bottom: none;
    border-radius: 10px 0 0 0;
  }
}

@media (max-width: 620px) {
  .nav-links { gap: 1.1rem; }
  .nav-links .nav-hide { display: none; }

  /* image becomes a darkened textural backdrop; text stays legible over a vertical scrim */
  .hero { min-height: auto; padding-block: 4.5rem 3rem; }
  .hero-bg { width: 100%; object-position: 82% center; }
  .hero::after {
    background:
      linear-gradient(to bottom, rgba(13, 14, 16, 0.92) 0%, rgba(13, 14, 16, 0.66) 50%, var(--bg) 100%);
  }

  .feature-grid { grid-template-columns: 1fr; }
  .fact-rail { gap: 0.9rem 1.6rem; }
  .footer { flex-direction: column; text-align: center; align-items: center; }
  .footer-meta { margin-left: 0; }
}