/* ── PanelPro landing — engineering-sheet aesthetic ─────────────────────────
   Palette: paper white, drawing ink, steel grey, copper (the conductor).   */

:root {
  --paper:        #F4F6F7;
  --surface:      #FFFFFF;
  --ink:          #182530;
  --steel:        #55656F;
  --line:         #D8DEE2;
  --line-ink:     #24343F;
  --copper:       #A54B1F;
  --copper-deep:  #7E3915;
  --copper-tint:  #F6EDE7;
  --sans: system-ui, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", Consolas, "SF Mono", Menlo, ui-monospace, monospace;
  --maxw: 1160px;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 11px 20px;
  border: 1.5px solid var(--ink);
  border-radius: 2px;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn-solid { background: var(--copper); border-color: var(--copper); color: #fff; }
.btn-solid:hover { background: var(--copper-deep); border-color: var(--copper-deep); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-lg { padding: 14px 26px; font-size: 16px; }
.btn-block { display: block; text-align: center; margin-top: 22px; }

/* ── Top bar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 246, 247, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark .wm { color: var(--ink); }
.wordmark b { color: var(--copper); font-weight: 700; }
.mark { width: 20px; height: 20px; color: var(--copper); }
.topnav { display: flex; align-items: center; gap: 22px; }
.navlink {
  color: var(--steel);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
}
.navlink:hover { color: var(--ink); }

/* ── Hero sheet ── */
.hero { padding: 40px 24px 30px; }
.sheet {
  max-width: var(--maxw);
  margin: 0 auto;
  background: var(--surface);
  border: 1.5px solid var(--line-ink);
  position: relative;
}
.sheet-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line-ink);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
}
.zones {
  display: flex;
  border-bottom: 1px solid var(--line);
  font-size: 10px;
  color: #9AA7B0;
}
.zones span {
  flex: 1;
  text-align: center;
  padding: 3px 0;
  border-right: 1px solid var(--line);
}
.zones span:last-child { border-right: none; }

.hero-body { padding: 56px 56px 44px; max-width: 780px; }
h1 {
  font-size: clamp(38px, 5.5vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 750;
}
.lede {
  margin-top: 22px;
  font-size: 19px;
  color: var(--steel);
  max-width: 620px;
}
.cta-row { margin-top: 30px; display: flex; gap: 14px; flex-wrap: wrap; }
.fine {
  margin-top: 20px;
  font-size: 11.5px;
  letter-spacing: 0.07em;
  color: var(--steel);
}
.hero-shot {
  border-top: 1.5px solid var(--line-ink);
  background: var(--paper);
}
.hero-shot img { width: 100%; }

/* ── Features ── */
.features {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 20px;
}
.feature {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}
.feature:last-child { border-bottom: none; }
.feature.flip .feature-text { order: 2; }
.feature.flip .feature-shot { order: 1; }

.viewlabel {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--copper);
  border-bottom: 1.5px solid var(--copper);
  display: inline-block;
  padding-bottom: 4px;
  margin-bottom: 18px;
}
h2 {
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.feature-text > p:not(.viewlabel) { margin-top: 14px; color: var(--steel); }

.ticks { list-style: none; margin-top: 18px; }
.ticks li {
  position: relative;
  padding: 7px 0 7px 26px;
  font-size: 15.5px;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 12px;
  height: 6px;
  border-left: 2px solid var(--copper);
  border-bottom: 2px solid var(--copper);
  transform: rotate(-45deg) translateY(-2px);
}

.feature-shot { min-width: 0; }
.feature-shot img {
  width: 100%;
  border: 1px solid var(--line-ink);
  background: var(--surface);
  box-shadow: 10px 10px 0 rgba(24, 37, 48, 0.06);
}
.feature-shot figcaption {
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

/* ── Library band ── */
.library {
  background: var(--ink);
  color: var(--paper);
  margin-top: 40px;
}
.library-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 24px;
}
.library .viewlabel { color: #E09062; border-color: #E09062; }
.library h2 { color: #fff; max-width: 640px; }
.library-lede {
  margin-top: 14px;
  color: #A9B6BF;
  max-width: 560px;
}
.library-cols {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.library-cols h3 {
  font-size: 17px;
  font-weight: 650;
  color: #fff;
  padding-top: 14px;
  border-top: 1px solid #3A4A55;
}
.library-cols p { margin-top: 8px; font-size: 15px; color: #A9B6BF; }

/* ── Pricing ── */
.pricing {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px 24px 70px;
}
.plans {
  margin-top: 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 860px;
}
.plan {
  background: var(--surface);
  border: 1.5px solid var(--line-ink);
  padding: 30px 30px 26px;
}
.plan-pro { border-color: var(--copper); box-shadow: 10px 10px 0 var(--copper-tint); }
.plan-name { font-size: 21px; font-weight: 700; letter-spacing: -0.01em; }
.plan-for { color: var(--steel); font-size: 14.5px; margin-top: 2px; }
.price {
  margin-top: 18px;
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.price-per { font-size: 15px; font-weight: 400; color: var(--steel); letter-spacing: 0; }
.price-alt { font-size: 12px; color: var(--steel); margin-top: 2px; letter-spacing: 0.03em; }
.plan .ticks { margin-top: 20px; }
.plan .ticks li { font-size: 15px; padding-top: 6px; padding-bottom: 6px; }
.trial-note { margin-top: 26px; color: var(--steel); font-size: 15px; }

/* ── Footer title block ── */
.titleblock {
  border-top: 1.5px solid var(--line-ink);
  background: var(--surface);
}
.tb-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 2fr;
}
.tb-cell {
  padding: 16px 20px 18px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.tb-cell:first-child { border-left: 1px solid var(--line); }
.tb-label { font-size: 10px; letter-spacing: 0.12em; color: #9AA7B0; }
.tb-value { font-size: 13.5px; color: var(--ink); }
.tb-links a { color: var(--copper-deep); text-decoration: none; }
.tb-links a:hover { text-decoration: underline; }
.tb-note .tb-value { color: var(--steel); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .feature,
  .feature.flip {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 44px 0;
  }
  .feature.flip .feature-text { order: 1; }
  .feature.flip .feature-shot { order: 2; }
  .hero-body { padding: 40px 32px 36px; }
  .library-cols { grid-template-columns: 1fr; gap: 26px; }
  .plans { grid-template-columns: 1fr; }
  .tb-grid { grid-template-columns: 1fr 1fr; }
  .tb-cell { border-left: none !important; border-right: none; border-bottom: 1px solid var(--line); }
  .tb-cell:last-child { border-bottom: none; }
}

@media (max-width: 560px) {
  .navlink { display: none; }
  .topbar-inner { padding: 12px 16px; }
  .btn { padding: 10px 14px; font-size: 14px; }
  .hero { padding: 20px 12px; }
  .hero-body { padding: 30px 20px 28px; }
  .lede { font-size: 17px; }
  .zones span:nth-child(n+5) { display: none; }
  .features { padding: 16px 16px 8px; }
  .library-inner { padding: 52px 20px; }
  .pricing { padding: 56px 16px 48px; }
  .plan { padding: 24px 20px; }
  .sheet-head-right { display: none; }
  .tb-grid { grid-template-columns: 1fr; }
}