/*
 * Swiss / International Style: strict grid, restrained type scale, thin structural rules,
 * near-monochrome palette with two accent hues used only to direct attention (never decoration).
 * Accents echo the two products this page is about — Pipedrive green, FreshBooks blue-green —
 * without imitating either brand's actual mark.
 */

:root {
  --ink: #14181c;
  --ink-soft: #4b545c;
  --line: #d8dcdf;
  --paper: #ffffff;
  --paper-sunken: #f4f5f6;

  --accent-pd: #24b566;   /* Pipedrive-adjacent green */
  --accent-fb: #1f8a8c;   /* FreshBooks-adjacent teal */

  --font-display: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --col: minmax(0, 1fr);
  --gutter: 24px;
  --margin: clamp(20px, 5vw, 96px);

  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, var(--col));
  gap: var(--gutter);
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--margin);
}

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}

/* --- Eyebrow / section index -------------------------------------------------------------- */

.eyebrow {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 20px;
  padding-top: 4px;
  border-top: 1px solid var(--line);
}
.eyebrow--on-dark { color: rgba(255, 255, 255, 0.6); border-top-color: rgba(255, 255, 255, 0.2); }
.eyebrow__index {
  font-weight: 700;
  color: var(--ink);
}
.eyebrow--on-dark .eyebrow__index { color: var(--paper); }

.section-title {
  grid-column: 1 / 9;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.1;
  margin-bottom: 48px;
}

/* --- Topbar -------------------------------------------------------------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--line);
}
.topbar .grid {
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 64px;
  padding-top: 0;
  padding-bottom: 0;
}
.topbar__mark {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}
.mark { width: 10px; height: 10px; display: inline-block; }
.mark--pd { background: var(--accent-pd); }
.mark--fb { background: var(--accent-fb); }
.topbar__x { color: var(--ink-soft); font-weight: 400; }
.topbar__word { margin-left: 4px; letter-spacing: -0.01em; }
.topbar__nav {
  display: flex;
  justify-content: center;
  gap: 32px;
  font-size: 14px;
}
.topbar__nav a { text-decoration: none; color: var(--ink-soft); transition: color 0.15s var(--ease); }
.topbar__nav a:hover { color: var(--ink); }
.topbar__cta { justify-self: end; }

/* --- Buttons --------------------------------------------------------------------------------*/

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: background-color 0.14s var(--ease), color 0.14s var(--ease), transform 0.14s var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--accent-pd); border-color: var(--accent-pd); color: var(--ink); }

.btn--ghost { background: transparent; color: var(--ink); height: 34px; padding: 0 16px; }
.btn--ghost:hover { background: var(--ink); color: var(--paper); }

.btn--text {
  border: none;
  height: auto;
  padding: 0;
  text-transform: none;
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: normal;
  border-bottom: 1px solid transparent;
}
.btn--text:hover { border-bottom-color: var(--ink); }

.btn--large { height: 52px; padding: 0 32px; font-size: 14px; }

/* --- Hero ------------------------------------------------------------------------------------*/

.hero {
  padding: clamp(64px, 9vw, 120px) 0 96px;
  border-bottom: 1px solid var(--line);
}
.hero .grid { row-gap: 56px; }

.hero__title {
  grid-column: 1 / -1;
  font-size: clamp(38px, 6vw, 76px);
  line-height: 1.04;
  max-width: 18ch;
}
.accent { color: var(--accent-pd); }

.hero__sub {
  grid-column: 1 / 8;
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--ink-soft);
  max-width: 52ch;
  margin: 24px 0 0;
}

.hero__actions {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 32px;
  margin-top: 40px;
}

.hero__ledger {
  grid-column: 1 / -1;
  margin-top: 24px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
}
.ledger-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}
.ledger-row:last-child { border-bottom: none; }
.ledger-row--active { color: var(--ink); background: var(--paper-sunken); }

.tag {
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid currentColor;
}
.tag--open { color: var(--ink-soft); }
.tag--paid { color: var(--accent-fb); border-color: var(--accent-fb); }
.tag--auto { color: var(--accent-pd); border-color: var(--accent-pd); }

/* --- Problem / solution ---------------------------------------------------------------------*/

.problem { padding: 96px 0; border-bottom: 1px solid var(--line); }
.cols-2 { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: var(--gutter); }
.col h2 { font-size: 22px; margin-bottom: 20px; }

.plain-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.plain-list li {
  padding-left: 22px;
  position: relative;
  font-size: 15px;
}
.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 1px;
  background: var(--accent-fb);
}
.plain-list--muted li { color: var(--ink-soft); }
.plain-list--muted li::before { background: var(--line); }

/* --- How it works -----------------------------------------------------------------------------*/

.how { padding: 96px 0; border-bottom: 1px solid var(--line); }
.steps {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
}
.step {
  border-top: 2px solid var(--ink);
  padding-top: 20px;
}
.step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-pd);
  margin-bottom: 12px;
}
.step h3 { font-size: 17px; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* --- Features ----------------------------------------------------------------------------------*/

.features { padding: 96px 0; border-bottom: 1px solid var(--line); background: var(--paper-sunken); }
.feature-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.feature {
  background: var(--paper);
  padding: 32px 28px;
  transition: background-color 0.16s var(--ease);
}
.feature:hover { background: var(--paper-sunken); }
.feature__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  border: 1px solid var(--ink);
  margin-bottom: 20px;
}
.feature h3 { font-size: 17px; margin-bottom: 10px; }
.feature p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* --- Sync diagram ------------------------------------------------------------------------------*/

.sync { padding: 96px 0; border-bottom: 1px solid var(--line); }
.sync-diagram {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
  border: 1px solid var(--line);
  padding: 40px;
}
.sync-node {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sync-node__label {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.sync-node__item {
  font-size: 16px;
  font-weight: 700;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.sync-arrows {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  white-space: nowrap;
}
.sync-arrow--back { color: var(--accent-fb); }
.sync-caption {
  grid-column: 1 / 9;
  margin-top: 20px;
  color: var(--ink-soft);
  font-size: 14px;
}

/* --- CTA -----------------------------------------------------------------------------------------*/

.cta {
  padding: 120px 0;
  background: var(--ink);
  color: var(--paper);
}
.cta__title {
  grid-column: 1 / -1;
  font-size: clamp(32px, 4.4vw, 56px);
  margin-bottom: 20px;
}
.cta__sub {
  grid-column: 1 / 7;
  color: rgba(255, 255, 255, 0.68);
  font-size: 16px;
  margin: 0 0 40px;
}
.cta .btn--primary { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.cta .btn--primary:hover { background: var(--accent-pd); border-color: var(--accent-pd); color: var(--ink); }
.cta__install { grid-column: 1 / -1; justify-self: start; }

/* --- Footer ----------------------------------------------------------------------------------------*/

.footer { padding: 40px 0 56px; }
.footer .grid { grid-template-columns: 1fr auto; row-gap: 16px; align-items: center; }
.footer__mark { font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); }
.footer__links { display: flex; gap: 24px; font-size: 13px; }
.footer__links a { text-decoration: none; color: var(--ink-soft); }
.footer__links a:hover { color: var(--ink); }
.footer__fine {
  grid-column: 1 / -1;
  font-size: 12px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin: 8px 0 0;
}

/* --- Reveal-on-scroll (snappy, not liquid) ---------------------------------------------------------*/

[data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --------------------------------------------------------------------------------------*/

@media (max-width: 900px) {
  .topbar__nav { display: none; }
  .hero__sub { grid-column: 1 / -1; }
  .cols-2 { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .sync-diagram { grid-template-columns: 1fr; text-align: center; }
  .sync-arrows { flex-direction: row; justify-content: center; }
  .cta__sub { grid-column: 1 / -1; }
  .footer .grid { grid-template-columns: 1fr; text-align: left; }
}

@media (max-width: 560px) {
  .steps, .feature-grid { grid-template-columns: 1fr; }
}