/* ==========================================================================
   Innovante Water Solutions — Design System
   Aesthetic: Editorial-technical. Serious, data-forward, credible.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter+Tight:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Brand palette — deep water + sediment */
  --ink: #0a1929;
  --ink-2: #14283d;
  --paper: #f7f5f0;
  --paper-2: #ede9df;
  --rule: #c9c1ae;
  --water: #1e6091;
  --water-deep: #0f3a5c;
  --water-bright: #2c8fc7;
  --silt: #8b6f47;
  --alert: #c5462a;
  --ok: #2d6a3e;

  /* Type */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter Tight', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  /* Scale */
  --step--1: clamp(0.83rem, 0.78rem + 0.2vw, 0.94rem);
  --step-0:  clamp(1.00rem, 0.95rem + 0.25vw, 1.13rem);
  --step-1:  clamp(1.20rem, 1.13rem + 0.35vw, 1.41rem);
  --step-2:  clamp(1.44rem, 1.34rem + 0.50vw, 1.76rem);
  --step-3:  clamp(1.73rem, 1.59rem + 0.71vw, 2.20rem);
  --step-4:  clamp(2.07rem, 1.88rem + 0.99vw, 2.75rem);
  --step-5:  clamp(2.49rem, 2.22rem + 1.37vw, 3.43rem);
  --step-6:  clamp(2.99rem, 2.61rem + 1.88vw, 4.29rem);

  /* Layout */
  --container: 1280px;
  --container-narrow: 880px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --radius: 4px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, picture, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: var(--water-deep); text-decoration: none; transition: color .2s; }
a:hover { color: var(--water-bright); }

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
h1 { font-size: var(--step-6); font-weight: 600; letter-spacing: -0.035em; }
h2 { font-size: var(--step-5); }
h3 { font-size: var(--step-3); }
h4 { font-size: var(--step-2); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--water);
  font-weight: 500;
}

/* Container */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container-narrow { width: 100%; max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--gutter); }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247, 245, 240, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem var(--gutter);
  max-width: var(--container); margin: 0 auto;
}
.brand {
  display: flex; align-items: center; gap: .75rem;
  font-family: var(--font-display);
  font-size: 1.4rem; font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand-mark {
  width: 36px; height: 36px;
  background: var(--ink);
  display: grid; place-items: center;
  color: var(--paper); font-family: var(--font-mono); font-size: .9rem;
  border-radius: 2px;
}
.brand small { display: block; font-family: var(--font-mono); font-size: .65rem; text-transform: uppercase; letter-spacing: .15em; color: var(--water); margin-top: 2px; font-weight: 500; }

.nav-list { display: flex; gap: 2rem; list-style: none; padding: 0; align-items: center; }
.nav-list a {
  color: var(--ink); font-size: .95rem; font-weight: 500;
  position: relative; padding: .5rem 0;
}
.nav-list a:hover { color: var(--water); }
.nav-list a.cta {
  background: var(--ink); color: var(--paper);
  padding: .65rem 1.25rem; border-radius: 2px;
}
.nav-list a.cta:hover { background: var(--water-deep); color: var(--paper); }

/* Dropdown */
.has-dropdown { position: relative; }
.dropdown {
  position: absolute; top: 100%; left: -1rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  min-width: 280px; padding: 1rem 0;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all .2s;
  list-style: none;
  box-shadow: 0 12px 40px rgba(10,25,41,.08);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown li a {
  display: block; padding: .65rem 1.5rem;
  font-size: .9rem;
  border-left: 2px solid transparent;
}
.dropdown li a:hover { background: var(--paper-2); border-left-color: var(--water); }

.menu-toggle { display: none; }

@media (max-width: 900px) {
  .menu-toggle { display: block; font-size: 1.5rem; color: var(--ink); }
  .nav-list {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--rule);
    padding: 1rem var(--gutter);
  }
  .nav-list.is-open { display: flex; }
  .nav-list a { padding: .75rem 0; width: 100%; border-bottom: 1px solid var(--paper-2); }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding-left: 1rem; min-width: 0; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .9rem 1.6rem;
  font-size: .95rem; font-weight: 500;
  border-radius: 2px;
  transition: all .2s;
  font-family: var(--font-body);
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--water-deep); color: var(--paper); transform: translateY(-1px); }
.btn-secondary { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
.btn-secondary:hover { background: var(--ink); color: var(--paper); }
.btn-ghost { color: var(--water); padding: .5rem 0; gap: .35rem; }
.btn-ghost::after { content: '→'; transition: transform .2s; }
.btn-ghost:hover::after { transform: translateX(4px); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(4rem, 10vw, 8rem);
  background:
    radial-gradient(ellipse at top right, rgba(30,96,145,.08), transparent 60%),
    var(--paper);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--rule), transparent);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 4rem; align-items: end;
}
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 2rem; } }

.hero h1 {
  margin-bottom: 1.5rem;
}
.hero h1 em {
  font-style: italic; font-weight: 400; color: var(--water);
  font-family: var(--font-display);
}
.hero-lede {
  font-size: var(--step-1); line-height: 1.5; color: var(--ink-2);
  max-width: 56ch; margin-bottom: 2rem;
}
.hero-meta {
  font-family: var(--font-mono); font-size: .8rem;
  text-transform: uppercase; letter-spacing: .12em; color: var(--ink-2);
  border-left: 2px solid var(--water); padding-left: 1rem;
}
.hero-meta strong { display: block; font-family: var(--font-display); font-size: var(--step-2); color: var(--ink); margin-top: .25rem; letter-spacing: -.02em; font-weight: 500; }

.hero-actions { display: flex; gap: 1rem; margin-top: 2.5rem; flex-wrap: wrap; }

/* Blueprint accent */
.blueprint {
  position: relative;
  aspect-ratio: 4/5;
  background:
    linear-gradient(135deg, var(--water-deep), var(--ink) 70%);
  overflow: hidden;
  border-radius: 2px;
}
.blueprint svg { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .35; }
.blueprint-label {
  position: absolute; bottom: 1.5rem; left: 1.5rem; right: 1.5rem;
  font-family: var(--font-mono); font-size: .7rem;
  color: rgba(247,245,240,.7); text-transform: uppercase; letter-spacing: .15em;
  display: flex; justify-content: space-between;
  border-top: 1px solid rgba(247,245,240,.2); padding-top: 1rem;
}

/* ==========================================================================
   Sections
   ========================================================================== */
.section { padding: clamp(4rem, 8vw, 7rem) 0; }
.section-dark { background: var(--ink); color: var(--paper); }
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--paper); }
.section-dark .eyebrow { color: var(--water-bright); }
.section-paper-2 { background: var(--paper-2); }

.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  margin-bottom: 4rem;
  align-items: end;
}
@media (max-width: 800px) { .section-head { grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 2.5rem; } }
.section-head .eyebrow { display: block; margin-bottom: 1rem; }

/* ==========================================================================
   Stats — REAL numbers, no zeros
   ========================================================================== */
.stats-band {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3rem, 6vw, 5rem) 0;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
@media (max-width: 800px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.stat {
  border-top: 1px solid rgba(247,245,240,.2);
  padding-top: 1.5rem;
}
.stat-num {
  font-family: var(--font-display);
  font-size: var(--step-6);
  font-weight: 500;
  line-height: 1; letter-spacing: -.03em;
  color: var(--paper);
  display: flex; align-items: baseline; gap: .15em;
}
.stat-num sup { font-size: .4em; color: var(--water-bright); font-weight: 400; }
.stat-label {
  font-family: var(--font-mono); font-size: .75rem;
  text-transform: uppercase; letter-spacing: .15em;
  color: rgba(247,245,240,.65);
  margin-top: .75rem;
}

/* ==========================================================================
   Service / Capability cards
   ========================================================================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.card {
  background: var(--paper);
  padding: 2rem;
  display: flex; flex-direction: column;
  transition: background .2s;
  min-height: 280px;
  position: relative;
}
.card:hover { background: var(--paper-2); }
.card-num {
  font-family: var(--font-mono); font-size: .75rem;
  color: var(--water); letter-spacing: .15em;
  margin-bottom: 1.5rem;
}
.card h3 { font-size: var(--step-2); margin-bottom: .75rem; }
.card p { color: var(--ink-2); font-size: .95rem; flex-grow: 1; }
.card-link {
  margin-top: 1.5rem;
  font-family: var(--font-mono); font-size: .8rem;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--water); display: inline-flex; align-items: center; gap: .5rem;
}
.card-link::after { content: '→'; transition: transform .2s; }
.card:hover .card-link::after { transform: translateX(4px); }

/* ==========================================================================
   Project / case study
   ========================================================================== */
.project {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  padding: 3rem 0;
  border-top: 1px solid var(--rule);
  align-items: center;
}
.project:last-child { border-bottom: 1px solid var(--rule); }
@media (max-width: 800px) { .project { grid-template-columns: 1fr; gap: 1.5rem; } }
.project-img {
  aspect-ratio: 4/3;
  background: var(--ink);
  background-size: cover; background-position: center;
  border-radius: 2px;
}
.project-meta { font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; color: var(--water); margin-bottom: .75rem; }
.project h3 { margin-bottom: 1rem; }
.project-stats { display: flex; gap: 2rem; margin-top: 1.5rem; flex-wrap: wrap; }
.project-stat strong { display: block; font-family: var(--font-display); font-size: var(--step-3); font-weight: 500; color: var(--ink); }
.project-stat span { font-family: var(--font-mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); }

/* ==========================================================================
   Testimonial
   ========================================================================== */
.testimonial {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 400; font-style: italic;
  line-height: 1.35; letter-spacing: -.015em;
  color: var(--ink); max-width: 32ch;
}
.testimonial::before { content: '"'; color: var(--water); font-size: 2em; line-height: 0; vertical-align: -0.3em; margin-right: .1em; }
.testimonial-cite { margin-top: 2rem; display: flex; gap: 1rem; align-items: center; }
.testimonial-cite strong { display: block; font-family: var(--font-body); font-size: .95rem; color: var(--ink); font-style: normal; }
.testimonial-cite span { display: block; font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); margin-top: .15rem; }

/* ==========================================================================
   CTA strip
   ========================================================================== */
.cta-strip {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3rem, 6vw, 5rem) 0;
  text-align: center;
}
.cta-strip h2 { color: var(--paper); margin-bottom: 1rem; }
.cta-strip p { color: rgba(247,245,240,.75); max-width: 50ch; margin: 0 auto 2rem; }
.cta-strip .btn-primary { background: var(--water-bright); }
.cta-strip .btn-primary:hover { background: var(--paper); color: var(--ink); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--ink);
  color: rgba(247,245,240,.75);
  padding: 4rem 0 2rem;
  font-size: .9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(247,245,240,.15);
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }
.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: .75rem; text-transform: uppercase; letter-spacing: .15em;
  color: var(--paper); font-weight: 500; margin-bottom: 1.25rem;
}
.footer-grid ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: .65rem; }
.footer-grid a { color: rgba(247,245,240,.7); }
.footer-grid a:hover { color: var(--water-bright); }
.footer-brand .brand { color: var(--paper); margin-bottom: 1rem; }
.footer-brand .brand-mark { background: var(--water); }
.footer-brand p { max-width: 32ch; line-height: 1.6; }
.footer-bottom {
  padding-top: 2rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-family: var(--font-mono); font-size: .75rem;
  color: rgba(247,245,240,.5);
  text-transform: uppercase; letter-spacing: .1em;
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }
.form-field { display: flex; flex-direction: column; gap: .5rem; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-2); }
.form-field input, .form-field select, .form-field textarea {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: .85rem 1rem;
  border-radius: 2px;
  font-size: 1rem; color: var(--ink);
  transition: border-color .2s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--water);
}
.form-field textarea { min-height: 140px; resize: vertical; }

/* ==========================================================================
   Page header (inner pages)
   ========================================================================== */
.page-header {
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(2rem, 4vw, 3rem);
  background: var(--paper-2);
  border-bottom: 1px solid var(--rule);
}
.page-header h1 { font-size: var(--step-5); margin-bottom: 1rem; max-width: 24ch; }
.page-header p { font-size: var(--step-1); color: var(--ink-2); max-width: 60ch; line-height: 1.5; }
.breadcrumb { font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-2); margin-bottom: 1.5rem; }
.breadcrumb a { color: var(--water); }

/* Article prose */
.prose { max-width: 70ch; }
.prose h2 { margin-top: 3rem; margin-bottom: 1rem; font-size: var(--step-3); }
.prose h3 { margin-top: 2rem; margin-bottom: .75rem; font-size: var(--step-2); }
.prose p { margin-bottom: 1.25rem; line-height: 1.7; }
.prose ul, .prose ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
.prose li { margin-bottom: .5rem; }

/* Two-column layout for service pages */
.two-col {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; gap: 2rem; } }

.aside-card {
  background: var(--paper-2);
  padding: 2rem;
  border-left: 3px solid var(--water);
  position: sticky; top: 90px;
}
.aside-card h4 { font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .15em; color: var(--ink-2); font-weight: 500; margin-bottom: 1rem; }
.aside-card .lead { font-family: var(--font-display); font-size: var(--step-1); line-height: 1.4; color: var(--ink); margin-bottom: 1.5rem; font-weight: 500; letter-spacing: -.01em; }

/* Capability list */
.capability-list { list-style: none; padding: 0; display: grid; gap: 1rem; }
.capability-list li {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
  display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: baseline;
}
.capability-list li::before {
  content: counter(cap, decimal-leading-zero);
  counter-increment: cap;
  font-family: var(--font-mono); font-size: .8rem; color: var(--water);
}
.capability-list { counter-reset: cap; }
.capability-list strong { display: block; font-family: var(--font-display); font-size: var(--step-1); font-weight: 500; margin-bottom: .25rem; letter-spacing: -.01em; }
.capability-list span { color: var(--ink-2); font-size: .95rem; }

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 1.5rem 0;
}
.faq-item summary {
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  font-family: var(--font-display); font-size: var(--step-1); font-weight: 500;
  letter-spacing: -.01em;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-family: var(--font-mono); font-size: 1.5rem; color: var(--water); transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin-top: 1rem; color: var(--ink-2); }

/* Blog */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1px; background: var(--rule); border: 1px solid var(--rule);
}
.post-card {
  background: var(--paper); padding: 2rem;
  display: flex; flex-direction: column;
  text-decoration: none; color: var(--ink);
  transition: background .2s;
}
.post-card:hover { background: var(--paper-2); color: var(--ink); }
.post-meta { font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; color: var(--water); margin-bottom: 1rem; }
.post-card h3 { font-size: var(--step-2); margin-bottom: .75rem; }
.post-card p { color: var(--ink-2); font-size: .95rem; flex-grow: 1; }
.post-card .post-author { margin-top: 1.5rem; font-size: .85rem; color: var(--ink-2); }

/* Subtle reveal animation */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(20px); transition: opacity .8s, transform .8s; }
  .reveal.in { opacity: 1; transform: none; }
}

/* Print + a11y */
:focus-visible { outline: 2px solid var(--water); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }