/* ============================================================
   DrySource — main stylesheet
   Dark violet-black theme. Unique palette:
   background #12101B · text #EFECF8 · accent violet #8B5CF6
   light violet #B9A8E8 · deep violet #3F3566
   ============================================================ */

:root {
  --bg: #12101B;
  --bg-soft: #1A1628;
  --text: #EFECF8;
  --muted: #B9A8E8;
  --accent: #8B5CF6;
  --accent-dark: #6D3FD4;
  --deep: #3F3566;
  --hairline: #2B2442;
  --hairline-soft: #241F38;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  color: var(--text);
  font-weight: 700;
}

/* ============================================================
   MESH NAV (.mesh-nav)
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
  border-bottom: 1px solid var(--hairline-soft);
}

.mesh-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
}

.mesh-nav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}

.mesh-nav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  flex: 0 0 auto;
}

.mesh-nav .brand:hover {
  text-decoration: none;
}

.mesh-nav .mesh-glyph {
  display: grid;
  grid-template-columns: repeat(3, 5px);
  grid-template-rows: repeat(3, 5px);
  gap: 3px;
  width: 21px;
  height: 21px;
}

.mesh-nav .mesh-glyph .dot {
  width: 5px;
  height: 5px;
  background-color: var(--accent);
}

.mesh-nav .brand-word {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 2px;
  color: var(--text);
}

.mesh-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  flex: 1 1 auto;
  justify-content: center;
}

.mesh-nav .nav-link {
  position: relative;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 0;
  text-decoration: none;
}

.mesh-nav .nav-link:hover {
  color: var(--text);
  text-decoration: none;
}

.mesh-nav .nav-link.active {
  color: var(--text);
}

.mesh-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background-color: var(--accent);
}

.mesh-nav .nav-cta {
  display: inline-block;
  background-color: var(--accent);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 6px;
  text-decoration: none;
  white-space: nowrap;
}

.mesh-nav .nav-cta:hover {
  background-color: var(--accent-dark);
  text-decoration: none;
}

.mesh-nav .nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mesh-nav .nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text);
  border-radius: 2px;
}

/* ============================================================
   HERO — DRYING TOWER
   ============================================================ */
.tower-hero {
  background-color: var(--bg);
  padding: 84px 0 96px;
  border-bottom: 1px solid var(--hairline-soft);
}

.tower-hero .hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.tower-hero .eyebrow {
  display: inline-block;
  background-color: var(--deep);
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.tower-hero h1 {
  font-size: 46px;
  line-height: 1.12;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
}

.tower-hero .subcopy {
  font-size: 18px;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 34px;
}

.tower-hero .subcopy-secondary {
  font-size: 16px;
  margin-bottom: 34px;
}

.tower-hero .cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background-color: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

.btn-primary:hover {
  background-color: var(--accent-dark);
  border-color: var(--accent-dark);
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  color: var(--muted);
  border-color: var(--muted);
}

.btn-outline:hover {
  background-color: var(--deep);
  color: var(--text);
  border-color: var(--muted);
  text-decoration: none;
}

/* --- Drying tower illustration --- */
.tower-stage {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: 400px;
}

.tower-scene {
  position: relative;
  width: 300px;
  height: 400px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.tower-cone {
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 70px solid transparent;
  border-right: 70px solid transparent;
  border-bottom: 110px solid var(--muted);
}

.tower-body {
  position: absolute;
  top: 150px;
  left: 50%;
  transform: translateX(-50%);
  width: 170px;
  height: 210px;
  background-color: var(--accent);
  border: 3px solid var(--muted);
  border-radius: 14px 14px 8px 8px;
}

.tower-hatch {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 64px;
  background-color: var(--deep);
  border: 2px solid var(--muted);
}

.tower-gauge {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 46px;
  height: 46px;
  background-color: var(--deep);
  border: 2px solid var(--muted);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tower-gauge .gauge-dot {
  width: 10px;
  height: 10px;
  background-color: var(--text);
  border-radius: 50%;
}

.tower-base {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  width: 210px;
  height: 14px;
  background-color: var(--muted);
  border-radius: 4px;
}

.tower-pipe-left {
  position: absolute;
  bottom: 36px;
  left: 34px;
  width: 16px;
  height: 74px;
  background-color: var(--deep);
}

.tower-pipe-right {
  position: absolute;
  bottom: 36px;
  right: 34px;
  width: 16px;
  height: 74px;
  background-color: var(--deep);
}

/* ============================================================
   STATEMENT ROW
   ============================================================ */
.statement-row {
  background-color: var(--bg);
  padding: 88px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.statement-row .statement {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 600;
  max-width: 980px;
  color: var(--text);
}

.statement-row .statement .accent-word {
  color: var(--accent);
}

.statement-row .statement-note {
  margin-top: 22px;
  font-size: 18px;
  color: var(--muted);
  max-width: 820px;
}

/* ============================================================
   UNIT ROWS
   ============================================================ */
.unit-rows {
  background-color: var(--bg);
  padding: 88px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.section-head {
  margin-bottom: 46px;
}

.section-head .section-eyebrow {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: 34px;
  margin-bottom: 12px;
}

.section-head .section-lead {
  color: var(--muted);
  font-size: 17px;
  max-width: 640px;
}

.unit-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.unit-row:last-child {
  border-bottom: none;
}

.unit-row .unit-marker {
  width: 14px;
  height: 14px;
  background-color: var(--accent);
  flex: 0 0 auto;
}

.unit-row .unit-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  flex: 0 0 200px;
}

.unit-row .unit-desc {
  color: var(--muted);
  font-size: 16px;
  flex: 1 1 auto;
}

.unit-row .unit-square {
  width: 14px;
  height: 14px;
  background-color: var(--muted);
  flex: 0 0 auto;
}

/* ============================================================
   STAT FOUR
   ============================================================ */
.stat-four {
  background-color: var(--bg-soft);
  padding: 88px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.stat-four .stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.stat-four .stat-item .stat-num {
  font-size: 52px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -1px;
  margin-bottom: 8px;
}

.stat-four .stat-item .stat-label {
  color: var(--muted);
  font-size: 16px;
  max-width: 220px;
}

/* ============================================================
   STAGES THREE
   ============================================================ */
.stages-three {
  background-color: var(--bg);
  padding: 88px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.stages-three .stage-flow {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}

.stages-three .stage-item {
  flex: 1 1 200px;
}

.stages-three .stage-square {
  width: 92px;
  height: 92px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

.stages-three .stage-square.sq-violet {
  background-color: var(--accent);
  color: #FFFFFF;
}

.stages-three .stage-square.sq-light {
  background-color: var(--muted);
  color: var(--bg);
}

.stages-three .stage-square.sq-deep {
  background-color: var(--deep);
  color: var(--text);
}

.stages-three .stage-arrow {
  font-size: 26px;
  color: var(--accent);
  padding-top: 28px;
  flex: 0 0 auto;
}

.stages-three .stage-note {
  color: var(--muted);
  font-size: 15px;
  max-width: 240px;
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-section {
  background-color: var(--bg);
  padding: 88px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.faq-list {
  max-width: 820px;
}

.faq-item {
  border-bottom: 1px solid var(--hairline-soft);
}

.faq-item:first-child {
  border-top: 1px solid var(--hairline-soft);
}

.faq-item .faq-toggle {
  width: 100%;
  background: transparent;
  border: none;
  text-align: left;
  color: var(--text);
  font-size: 18px;
  font-weight: 600;
  padding: 22px 40px 22px 0;
  cursor: pointer;
  position: relative;
  font-family: inherit;
}

.faq-item .faq-toggle::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 26px;
  font-weight: 400;
  color: var(--accent);
}

.faq-item.open .faq-toggle::after {
  content: "−";
}

.faq-item .faq-body {
  display: none;
  padding: 0 40px 24px 0;
  color: var(--muted);
  font-size: 16px;
}

.faq-item.open .faq-body {
  display: block;
}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  background-color: var(--accent);
  padding: 84px 0;
}

.cta-band .cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-band h2 {
  font-size: 34px;
  color: #FFFFFF;
  max-width: 620px;
}

.cta-band .btn-light {
  background-color: #FFFFFF;
  color: var(--accent);
  border-color: #FFFFFF;
  font-size: 16px;
}

.cta-band .btn-light:hover {
  background-color: var(--muted);
  border-color: var(--muted);
  color: var(--bg);
  text-decoration: none;
}

/* ============================================================
   SILO FOOTER
   ============================================================ */
.silo-footer {
  background-color: var(--bg);
  border-top: 3px solid var(--accent);
  padding: 64px 0 40px;
}

.silo-footer .footer-cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 40px;
}

.silo-footer .footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.silo-footer .footer-mesh {
  display: grid;
  grid-template-columns: repeat(3, 5px);
  grid-template-rows: repeat(3, 5px);
  gap: 3px;
  width: 21px;
  height: 21px;
  flex: 0 0 auto;
  margin-top: 5px;
}

.silo-footer .footer-mesh .dot {
  width: 5px;
  height: 5px;
  background-color: var(--accent);
}

.silo-footer .footer-brand-text .brand-word {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--text);
  margin-bottom: 8px;
}

.silo-footer .footer-brand-text p {
  color: var(--muted);
  font-size: 15px;
}

.silo-footer h4 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 18px;
}

.silo-footer .footer-links {
  list-style: none;
}

.silo-footer .footer-links li {
  margin-bottom: 12px;
}

.silo-footer .footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
}

.silo-footer .footer-links a:hover {
  color: var(--text);
  text-decoration: underline;
}

.silo-footer .footer-contact p {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 12px;
}

.silo-footer .footer-contact a {
  color: var(--muted);
}

.silo-footer .footer-contact a:hover {
  color: var(--text);
}

.silo-footer .footer-legal {
  border-top: 1px solid var(--hairline-soft);
  padding-top: 26px;
  color: var(--muted);
  font-size: 14px;
}

.silo-footer .footer-legal a {
  color: var(--muted);
}

.silo-footer .footer-legal a:hover {
  color: var(--text);
}

.silo-footer .footer-legal .sep {
  color: var(--hairline);
  margin: 0 8px;
}

/* ============================================================
   SCROLL REVEAL (safe without JS)
   ============================================================ */
.fade-up {
  opacity: 1;
  transform: none;
}

/* ============================================================
   SECONDARY PAGES — shared intro band
   ============================================================ */
.page-intro {
  background-color: var(--bg-soft);
  padding: 72px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-intro h1 {
  font-size: 40px;
  margin-bottom: 16px;
}

.page-intro .page-lead {
  color: var(--muted);
  font-size: 18px;
  max-width: 720px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .tower-hero .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .tower-hero h1 {
    font-size: 36px;
  }

  .tower-stage {
    height: 340px;
  }

  .tower-scene {
    height: 340px;
    transform: scale(0.85);
  }

  .stat-four .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .silo-footer .footer-cols {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .unit-row {
    flex-wrap: wrap;
  }

  .unit-row .unit-name {
    flex: 0 0 160px;
  }
}

@media (max-width: 720px) {
  .mesh-nav .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--bg);
    padding: 12px 24px 24px;
    border-bottom: 1px solid var(--hairline-soft);
    display: none;
  }

  .mesh-nav .nav-links.open {
    display: flex;
  }

  .mesh-nav .nav-link {
    padding: 14px 0;
    width: 100%;
    font-size: 17px;
  }

  .mesh-nav .nav-cta {
    display: none;
  }

  .mesh-nav .nav-toggle {
    display: flex;
  }

  .tower-hero {
    padding: 56px 0 72px;
  }

  .tower-hero h1 {
    font-size: 30px;
  }

  .statement-row .statement {
    font-size: 24px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .stages-three .stage-arrow {
    transform: rotate(90deg);
    padding-top: 0;
  }
}