/* ============================================================
   Fresh Web — Case Studies (shared styles for the index +
   individual study pages). Brand-matched to the marketing site
   (Inter, green/navy tokens).
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --green: #9FE870;
  --green-dark: #86D957;
  --green-light: #D2F4BC;
  --navy: #163300;
  --navy-mid: #1D3F00;
  --text-primary: #0A2008;
  --text-secondary: #4A6741;
  --text-muted: #6B8563;
  --bg-primary: #FFFFFF;
  --bg-secondary: #F2F7F0;
  --bg-tertiary: #E8F0E4;
  --border: #D9E6D4;
  --white: #FFFFFF;
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 100px;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ═══ NAVIGATION ═══ */
.nav-wrap { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid transparent; transition: all 0.3s ease; }
.nav-wrap.scrolled { border-bottom-color: var(--border); box-shadow: 0 1px 8px rgba(0,0,0,0.04); }
nav { padding: 16px 0; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.logo { display: inline-flex; align-items: center; color: var(--navy); }
.logo svg { height: 26px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-secondary); transition: color 0.2s; }
.nav-links a:hover { color: var(--text-primary); }
.nav-cta { background: var(--green) !important; color: var(--navy) !important; padding: 10px 24px; border-radius: var(--radius-pill); font-weight: 700 !important; font-size: 14px !important; transition: all 0.2s; display: inline-flex; align-items: center; gap: 8px; }
.nav-cta:hover { background: var(--green-dark) !important; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(159,232,112,0.3); }
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-toggle span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 5px 0; border-radius: 2px; transition: all 0.3s; }

/* ═══ BUTTONS ═══ */
.btn-green { display: inline-flex; align-items: center; gap: 8px; background: var(--green); color: var(--navy); padding: 16px 32px; border-radius: var(--radius-pill); font-weight: 700; font-size: 16px; transition: all 0.2s; border: none; cursor: pointer; }
.btn-green:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(159,232,112,0.25); }
.btn-outline { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--white); padding: 16px 32px; border-radius: var(--radius-pill); font-weight: 600; font-size: 16px; transition: all 0.2s; border: 1.5px solid rgba(255,255,255,0.25); cursor: pointer; }
.btn-outline:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.05); }
.btn-outline-dark { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--text-primary); padding: 16px 32px; border-radius: var(--radius-pill); font-weight: 600; font-size: 16px; transition: all 0.2s; border: 1.5px solid var(--border); cursor: pointer; }
.btn-outline-dark:hover { border-color: var(--text-primary); background: var(--bg-secondary); }
.arrow-icon { width: 16px; height: 16px; transition: transform 0.2s; }
.btn-green:hover .arrow-icon, .btn-outline:hover .arrow-icon, .btn-outline-dark:hover .arrow-icon { transform: translateX(2px); }

/* ═══ SECTION HELPERS ═══ */
.section-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--navy-mid); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px; background: var(--bg-tertiary); padding: 6px 16px; border-radius: var(--radius-pill); }
.section-title { font-size: clamp(32px, 4vw, 48px); font-weight: 900; line-height: 1.1; letter-spacing: -1.5px; color: var(--text-primary); margin-bottom: 16px; }
.section-desc { font-size: 17px; color: var(--text-muted); max-width: 560px; line-height: 1.7; font-weight: 400; }

/* ═══ PAGE HEADER ═══ */
.cs-head { padding: 150px 0 8px; text-align: center; }
.cs-head .section-desc { margin: 0 auto; }

/* ═══ INDEX GRID + CARDS ═══ */
.cs-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; max-width: 1000px; margin: 48px auto 0; }
.cs-card { display: block; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: transform 0.25s cubic-bezier(0.23,1,0.32,1), box-shadow 0.25s, border-color 0.25s; }
.cs-card:hover { transform: translateY(-4px); box-shadow: 0 24px 50px -24px rgba(22,51,0,0.28); border-color: var(--green-dark); }
.cs-card-shot { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-secondary); border-bottom: 1px solid var(--border); }
.cs-card-shot img { width: 100%; height: 100%; object-fit: cover; object-position: top center; display: block; transition: transform 0.5s cubic-bezier(0.23,1,0.32,1); }
.cs-card:hover .cs-card-shot img { transform: scale(1.04); }
.cs-card-body { padding: 22px 24px 24px; }
.cs-card-tag { font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--navy-mid); }
.cs-card h3 { font-size: 19px; font-weight: 800; letter-spacing: -0.4px; color: var(--text-primary); margin: 8px 0 16px; line-height: 1.25; }
.cs-card-link { font-size: 14px; font-weight: 700; color: var(--navy); display: inline-flex; align-items: center; gap: 6px; transition: gap 0.2s; }
.cs-card:hover .cs-card-link { gap: 10px; }

/* ═══ SINGLE-STUDY: back link ═══ */
.cs-back { padding: 116px 0 0; }
.cs-backlink { font-size: 14px; font-weight: 600; color: var(--text-muted); display: inline-flex; align-items: center; gap: 7px; transition: color 0.2s, gap 0.2s; }
.cs-backlink:hover { color: var(--navy); gap: 10px; }

/* ═══ CASE STUDY BODY ═══ */
.cs { padding: 32px 0 0; }
.cs-shot { max-width: 1000px; margin: 0 auto; }
.cs-browser { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: 0 24px 60px -24px rgba(22,51,0,0.30); background: var(--white); }
.cs-browser-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: var(--bg-secondary); border-bottom: 1px solid var(--border); }
.cs-browser-bar > span { width: 11px; height: 11px; border-radius: 50%; background: var(--border); flex: none; }
.cs-browser-url { margin-left: 10px; font-size: 13px; color: var(--text-muted); background: var(--white); border: 1px solid var(--border); padding: 5px 16px; border-radius: var(--radius-pill); }
.cs-browser img { display: block; width: 100%; height: auto; }

.cs-intro { max-width: 760px; margin: 48px auto 0; text-align: center; }
.cs-tag { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--navy-mid); background: var(--bg-tertiary); padding: 6px 16px; border-radius: var(--radius-pill); margin-bottom: 18px; }
.cs-title { font-size: clamp(26px, 3.6vw, 40px); font-weight: 900; line-height: 1.15; letter-spacing: -1.2px; color: var(--text-primary); margin-bottom: 16px; }
.cs-lead { font-size: 18px; color: var(--text-secondary); line-height: 1.7; }
.cs-meta { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; align-items: center; margin-top: 26px; }
.cs-meta span { font-size: 13px; font-weight: 600; color: var(--text-secondary); background: var(--bg-secondary); border: 1px solid var(--border); padding: 7px 16px; border-radius: var(--radius-pill); }
.cs-meta span.is-key { background: var(--navy); color: var(--white); border-color: var(--navy); }
.cs-livelink { font-size: 14px; font-weight: 700; color: var(--navy); display: inline-flex; align-items: center; gap: 6px; padding: 7px 4px; }
.cs-livelink:hover { color: var(--navy-mid); }

.cs-body { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.cs-block { margin-top: 56px; }
.cs-block h3 { font-size: 24px; font-weight: 800; letter-spacing: -0.6px; color: var(--text-primary); margin-bottom: 14px; }
.cs-block p { font-size: 16.5px; color: var(--text-secondary); line-height: 1.8; }
.cs-block p + p { margin-top: 14px; }
.cs-block strong { color: var(--text-primary); font-weight: 700; }

.cs-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin-top: 24px; }
.cs-step { background: var(--white); padding: 26px 24px; }
.cs-step .num { font-size: 13px; font-weight: 800; letter-spacing: 1px; color: var(--navy); opacity: 0.55; }
.cs-step h4 { font-size: 16px; font-weight: 700; color: var(--text-primary); margin: 8px 0 6px; }
.cs-step p { font-size: 14.5px; color: var(--text-muted); line-height: 1.65; }
.cs-note { margin-top: 16px; font-size: 14.5px; color: var(--text-muted); }

.cs-stat { display: flex; align-items: baseline; gap: 18px; margin-top: 22px; padding: 28px 30px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.cs-stat .big { font-size: clamp(44px, 8vw, 68px); font-weight: 900; letter-spacing: -2.5px; color: var(--navy); line-height: 0.95; white-space: nowrap; }
.cs-stat .lbl { font-size: 15.5px; color: var(--text-secondary); line-height: 1.5; }

/* Testimonial band */
.cs-quote { background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 76px 0; margin-top: 80px; }
.cs-quote-inner { max-width: 820px; margin: 0 auto; text-align: center; }
.cs-quote .mark { display: block; font-size: 72px; line-height: 0.5; font-weight: 900; color: var(--green-dark); margin-bottom: 16px; }
.cs-quote-head { font-size: clamp(21px, 3vw, 29px); font-weight: 900; letter-spacing: -0.8px; color: var(--navy); line-height: 1.25; margin-bottom: 22px; }
.cs-quote-body { font-size: 18px; line-height: 1.75; color: var(--text-secondary); }
.cs-quote-attr { margin-top: 26px; font-size: 15px; }
.cs-quote-attr strong { color: var(--text-primary); font-weight: 700; }
.cs-quote-attr span { color: var(--text-muted); }

/* ═══ MORE CASE STUDIES ═══ */
.cs-more { padding: 76px 0 0; }
.cs-more h2 { text-align: center; font-size: 24px; font-weight: 800; letter-spacing: -0.6px; color: var(--text-primary); }
.cs-more .cs-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 360px)); justify-content: center; max-width: 760px; margin-top: 32px; }

/* ═══ CLOSING CTA ═══ */
.cs-cta { background: var(--navy); color: var(--white); padding: 80px 0; text-align: center; margin-top: 80px; }
.cs-cta h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 900; letter-spacing: -1px; margin-bottom: 14px; }
.cs-cta p { font-size: 17px; color: rgba(255,255,255,0.6); max-width: 520px; margin: 0 auto 32px; line-height: 1.7; }
.cs-cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ═══ FOOTER ═══ */
footer { background: var(--navy); padding: 64px 0 32px; color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { margin-bottom: 14px; display: block; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.4); max-width: 260px; line-height: 1.7; }
.footer-col h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 18px; color: rgba(255,255,255,0.35); }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: 14px; color: rgba(255,255,255,0.55); transition: color 0.2s; }
.footer-col a:hover { color: var(--green); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; align-items: center; justify-content: space-between; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.3); }

/* ═══ ANIMATIONS ═══ */
.reveal { opacity: 0; transform: translateY(25px); transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } .cs-card, .cs-card-shot img { transition: none; } }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .cs-head { padding: 120px 0 4px; }
  .cs-back { padding: 96px 0 0; }
  .cs-grid { margin-top: 36px; }
  .cs { padding: 24px 0 0; }
  .cs-intro { margin-top: 36px; }
  .cs-steps { grid-template-columns: 1fr; }
  .cs-stat { flex-direction: column; align-items: flex-start; gap: 8px; padding: 24px; }
  .cs-quote { padding: 56px 0; margin-top: 56px; }
  .cs-more { padding: 56px 0 0; }
  .cs-cta { padding: 60px 0; margin-top: 56px; }
  .cs-cta-buttons { flex-direction: column; align-items: center; }
  .cs-cta-buttons .btn-green, .cs-cta-buttons .btn-outline { width: 100%; max-width: 300px; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .cs-body { padding: 0 16px; }
  .cs-lead { font-size: 16px; }
  .cs-block p { font-size: 15.5px; }
  .btn-green, .btn-outline { padding: 14px 24px; font-size: 15px; }
}