/* ══════════════════════════════════════════════════════════════
   ForestSat Website — Core Stylesheet
   Dark Forest Premium Aesthetic
   Fonts: Playfair Display (headings) + IBM Plex Sans (body) + IBM Plex Mono (data)
   ══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;0,900;1,400;1,600&family=IBM+Plex+Sans:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;600&display=swap');

/* ── TOKENS ── */
:root {
  --green:      #1B9E5A;
  --green-lt:   #27AE60;
  --green-dim:  #0E5A32;
  --teal:       #0D9A7F;
  --amber:      #D4A020;
  --red:        #C0392B;
  --orange:     #D4621A;
  --black:      #07090C;
  --bg:         #0B0E12;
  --bg-mid:     #0F1318;
  --bg-card:    #131820;
  --bg-card2:   #1A2030;
  --border:     rgba(255,255,255,0.07);
  --border-g:   rgba(27,158,90,0.25);
  --white:      #FFFFFF;
  --paper:      #EAF0E8;
  --silver:     #8A9AAA;
  --dim:        #4A5568;
  --font-disp:  'Playfair Display', Georgia, serif;
  --font-body:  'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:  'IBM Plex Mono', monospace;
  --radius:     4px;
  --radius-lg:  10px;
  --shadow:     0 8px 32px rgba(0,0,0,0.5);
  --shadow-g:   0 4px 24px rgba(27,158,90,0.2);
  
  /* Theme overrides custom variables */
  --text-title:           var(--white);
  --nav-bg:               rgba(7,9,12,0.92);
  --nav-bg-scroll:        rgba(7,9,12,0.98);
  --grid-color:           rgba(255,255,255,0.5);
  --secondary-btn-bg:     rgba(255,255,255,0.04);
  --btn-secondary-border: rgba(255,255,255,0.2);
  --hover-bg:             rgba(255,255,255,0.06);
}

[data-theme="light"] {
  --black:                #FAFBF9;
  --bg:                   #FAFBF9;
  --bg-mid:               #F3F6F2;
  --bg-card:              #FFFFFF;
  --bg-card2:             #EDF2EC;
  --border:               rgba(0,0,0,0.08);
  --border-g:             rgba(27,158,90,0.18);
  --paper:                #222B25;
  --silver:               #55645A;
  --dim:                  #7C8E82;
  --shadow:               0 8px 32px rgba(27,158,90,0.06);
  --shadow-g:             0 4px 24px rgba(27,158,90,0.08);
  --text-title:           #131A16;
  --nav-bg:               rgba(244,247,244,0.92);
  --nav-bg-scroll:        rgba(244,247,244,0.98);
  --grid-color:           rgba(0,0,0,0.12);
  --secondary-btn-bg:     rgba(0,0,0,0.04);
  --btn-secondary-border: rgba(0,0,0,0.15);
  --hover-bg:             rgba(0,0,0,0.05);
}

/* ── LOGO FILTER FOR LIGHT MODE ── */
[data-theme="light"] .nav-brand img,
[data-theme="light"] .footer-brand img {
  filter: invert(0.9) hue-rotate(180deg) brightness(0.9);
  transition: filter 0.3s ease;
}

/* ── THEME TOGGLE BUTTON ── */
.theme-toggle {
  background: none;
  border: none;
  color: var(--silver);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, transform 0.2s;
  margin-left: auto;
  border-radius: 50%;
  width: 36px;
  height: 36px;
}
.theme-toggle:hover {
  color: var(--text-title);
  transform: scale(1.08);
  background: var(--hover-bg);
}
.theme-toggle svg {
  width: 20px;
  height: 20px;
  stroke-width: 2px;
}
.sun-icon { display: none; }
.moon-icon { display: block; }

[data-theme="light"] .sun-icon { display: block; }
[data-theme="light"] .moon-icon { display: none; }


/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { background: var(--black); color: var(--paper); font-family: var(--font-body); font-weight: 400; line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: var(--green-lt); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--amber); }
button { cursor: pointer; font-family: var(--font-body); border: none; }
h1, h2, h3 { font-family: var(--font-disp); line-height: 1.15; }

.products-box{ display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:32px; }
.nav-brand span.logo{ width: 250px; }

/* ── NAVIGATION ── */
.fs-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px; height: 68px;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
.fs-nav.scrolled { background: var(--nav-bg-scroll); }

.nav-brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 18px; font-weight: 600;
  color: var(--text-title); letter-spacing: 1px;
}
.nav-brand .brand-dot {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--green-dim));
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0;
}
.nav-brand .brand-name { color: var(--text-title); }
.nav-brand .brand-name em { color: var(--green); font-style: normal; }

.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none;
  margin-left: auto;
}
.nav-links a {
  display: block; padding: 6px 14px;
  font-size: 14px; font-weight: 500; color: var(--silver);
  border-radius: var(--radius); transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-title); background: var(--hover-bg);
}
.nav-links a.active { color: var(--green); }

.nav-cta {
  padding: 8px 20px !important;
  background: var(--green) !important;
  color: var(--white) !important;
  border-radius: var(--radius) !important;
  font-weight: 600 !important; font-size: 13px !important;
  letter-spacing: 0.5px;
}
.nav-cta:hover { background: var(--green-lt) !important; }

.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--silver); border-radius: 2px; transition: all 0.2s;
}

.nav-mobile {
  display: none; position: fixed; top: 68px; left: 0; right: 0;
  background: var(--bg-mid); border-bottom: 1px solid var(--border);
  padding: 16px 24px; z-index: 999;
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block; padding: 12px 0;
  font-size: 15px; color: var(--silver);
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover { color: var(--green); }

/* ── HERO ── */
.hero {
  padding: 140px 40px 80px;
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(14,90,50,0.18) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(13,154,127,0.1) 0%, transparent 50%),
              var(--black);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0; opacity: 0.03;
  background-image: linear-gradient(var(--grid-color) 1px, transparent 1px),
                    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; width: 100%; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--green);
  padding: 6px 14px; border: 1px solid var(--border-g);
  border-radius: 20px; margin-bottom: 28px;
  background: rgba(27,158,90,0.08);
}
.hero h1 {
  font-size: clamp(40px, 6vw, 84px); font-weight: 900;
  color: var(--text-title); margin-bottom: 24px;
  max-width: 780px; line-height: 1.05;
}
.hero h1 em { color: var(--green); font-style: normal; }
.hero h1 .line2 { color: var(--amber); }
.hero-sub {
  font-size: clamp(16px, 1.8vw, 20px); color: var(--silver);
  max-width: 580px; line-height: 1.75; margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 64px; }
 
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; background: var(--green); color: var(--white);
  border-radius: var(--radius); font-weight: 600; font-size: 15px;
  transition: all 0.2s; border: none;
}
.btn-primary:hover { background: var(--green-lt); transform: translateY(-1px); color: var(--white); box-shadow: var(--shadow-g); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border: 1px solid var(--btn-secondary-border); color: var(--paper);
  border-radius: var(--radius); font-weight: 500; font-size: 15px;
  background: var(--secondary-btn-bg); transition: all 0.2s;
}
.btn-secondary:hover { border-color: var(--green); color: var(--green); background: rgba(27,158,90,0.08); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; color: var(--green);
  border: 1px solid var(--border-g); border-radius: var(--radius);
  font-size: 13px; font-family: var(--font-mono); letter-spacing: 1px;
  text-transform: uppercase; background: rgba(27,158,90,0.06); transition: all 0.2s;
}
.btn-ghost:hover { background: rgba(27,158,90,0.15); color: var(--green-lt); }
 
/* ── LAYOUT ── */
.section { padding: 96px 40px; }
.section-sm { padding: 64px 40px; }
.container { max-width: 1200px; margin: 0 auto; }
.section-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 3px;
  text-transform: uppercase; color: var(--green); margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 48px); font-weight: 700; color: var(--text-title);
  margin-bottom: 16px; line-height: 1.15;
}
.section-sub {
  font-size: 17px; color: var(--silver); max-width: 640px;
  line-height: 1.75; margin-bottom: 48px;
}
.section-divider {
  border: none; border-top: 1px solid var(--border); margin: 0;
}

/* ── CARDS ── */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  position: relative; overflow: hidden;
}
.card:hover { border-color: rgba(27,158,90,0.35); transform: translateY(-2px); box-shadow: var(--shadow); }
.card-accent-top { border-top: 3px solid var(--green); }
.card-accent-left { border-left: 4px solid var(--green); }

/* ── GRID LAYOUTS ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }

/* ── STAT CALLOUT ── */
.stat-block { text-align: center; }
.stat-num {
  font-family: var(--font-mono); font-size: clamp(28px,4vw,48px);
  font-weight: 600; color: var(--green); line-height: 1; margin-bottom: 8px;
}
.stat-label { font-size: 13px; color: var(--silver); line-height: 1.4; }
.stat-source { font-family: var(--font-mono); font-size: 10px; color: var(--dim); margin-top: 4px; }

/* ── PRODUCT CARD ── */
.product-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.product-card:hover { transform: translateY(-4px); box-shadow: 0 16px 48px rgba(0,0,0,0.6); }
.product-card-header {
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, var(--bg-card2), var(--bg-card));
}
.product-icon {
  width: 48px; height: 48px; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
}
.product-step {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 6px;
}
.product-card h3 { font-size: 20px; font-weight: 700; color: var(--text-title); margin-bottom: 6px; }
.product-tagline { font-size: 12px; font-family: var(--font-mono); }
.product-card-body { padding: 20px 28px 24px; }
.product-card p { font-size: 14px; color: var(--silver); line-height: 1.7; margin-bottom: 16px; }
.product-features { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.product-features li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px; color: var(--silver);
}
.product-features li::before {
  content: '→'; color: var(--green); flex-shrink: 0; margin-top: 1px;
}

/* ── TESTIMONIAL / QUOTE ── */
.quote-block {
  padding: 28px 32px; border-left: 4px solid var(--green);
  background: rgba(27,158,90,0.06); border-radius: 0 var(--radius) var(--radius) 0;
  margin: 32px 0;
}
.quote-text {
  font-family: var(--font-disp); font-size: 18px; font-style: italic;
  color: var(--paper); line-height: 1.7; margin-bottom: 12px;
}
.quote-attr { font-size: 12px; font-family: var(--font-mono); color: var(--green); }

/* ── BADGE ── */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 20px; font-size: 11px;
  font-family: var(--font-mono); font-weight: 600; letter-spacing: 1px;
  text-transform: uppercase;
}
.badge-green { background: rgba(27,158,90,0.15); color: var(--green-lt); border: 1px solid rgba(27,158,90,0.3); }
.badge-amber { background: rgba(212,160,32,0.15); color: var(--amber); border: 1px solid rgba(212,160,32,0.3); }
.badge-red   { background: rgba(192,57,43,0.15); color: #FF8A80; border: 1px solid rgba(192,57,43,0.3); }
.badge-teal  { background: rgba(13,154,127,0.15); color: #4EC9B0; border: 1px solid rgba(13,154,127,0.3); }

/* ── PROCESS STEPS ── */
.process-flow { display: flex; gap: 0; flex-wrap: nowrap; overflow-x: auto; }
.process-step {
  flex: 1; min-width: 140px; text-align: center; padding: 24px 16px;
  position: relative;
}
.process-step:not(:last-child)::after {
  content: '→'; position: absolute; right: -10px; top: 50%;
  transform: translateY(-50%); color: var(--green); font-size: 20px;
}
.process-num {
  width: 40px; height: 40px; border-radius: 50%; margin: 0 auto 12px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
}
.process-step h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 6px; }
.process-step p { font-size: 12px; color: var(--silver); }

/* ── ACCORDION ── */
.accordion { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.accordion-item { border-bottom: 1px solid var(--border); }
.accordion-item:last-child { border-bottom: none; }
.accordion-header {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; background: var(--bg-card); color: var(--paper);
  font-size: 15px; font-weight: 500; text-align: left;
  transition: background 0.2s; cursor: pointer; border: none;
}
.accordion-header:hover { background: var(--bg-card2); }
.accordion-header.open { color: var(--green); }
.accordion-arrow { font-size: 12px; transition: transform 0.2s; color: var(--silver); }
.accordion-header.open .accordion-arrow { transform: rotate(180deg); color: var(--green); }
.accordion-body {
  display: none; padding: 0 24px 20px; background: var(--bg-card);
  font-size: 14px; color: var(--silver); line-height: 1.75;
}
.accordion-body.open { display: block; }

/* ── FEATURE TABLE ── */
.feature-table { width: 100%; border-collapse: collapse; }
.feature-table th {
  text-align: left; padding: 10px 14px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--green);
  border-bottom: 1px solid var(--border-g); background: rgba(27,158,90,0.06);
}
.feature-table td {
  padding: 12px 14px; font-size: 13px; color: var(--silver);
  border-bottom: 1px solid var(--border); vertical-align: top;
}
.feature-table tr:hover td { background: rgba(255,255,255,0.02); }
.feature-table td:first-child { color: var(--paper); font-weight: 500; }

/* ── RESEARCH CARD ── */
.research-card {
  display: flex; flex-direction: column;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; transition: all 0.25s;
}
.research-card:hover { border-color: rgba(27,158,90,0.35); transform: translateY(-3px); box-shadow: var(--shadow); }
.research-card-band { height: 5px; }
.research-card-body { padding: 24px; flex: 1; }
.research-card-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.research-card h3 { font-family: var(--font-disp); font-size: 18px; color: var(--text-title); margin-bottom: 8px; }
.research-card p { font-size: 13px; color: var(--silver); line-height: 1.65; margin-bottom: 16px; }
.research-card-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.research-card-footer .data-points { font-family: var(--font-mono); font-size: 10px; color: var(--dim); }

/* ── CTA SECTION ── */
.cta-section {
  padding: 80px 40px; text-align: center;
  background: linear-gradient(160deg, rgba(14,90,50,0.15) 0%, rgba(7,9,12,0) 60%),
              var(--bg);
  border-top: 1px solid var(--border);
}
.cta-section h2 { font-size: clamp(28px,4vw,44px); color: var(--text-title); margin-bottom: 16px; }
.cta-section p { font-size: 17px; color: var(--silver); max-width: 560px; margin: 0 auto 36px; line-height: 1.7; }

/* ── FOOTER ── */
.fs-footer {
  padding: 64px 40px 32px;
  background: var(--bg-mid); border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  max-width: 1200px; margin: 0 auto 48px;
}
.footer-brand p { font-size: 14px; color: var(--silver); line-height: 1.7; margin: 16px 0 20px; max-width: 280px; }
.footer-col h4 {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--green); margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--silver); transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--green); }
.footer-bottom {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding-top: 24px; border-top: 1px solid var(--border);
  font-size: 13px; color: var(--dim);
}
.footer-bottom a { color: var(--dim); }
.footer-bottom a:hover { color: var(--silver); }

/* ── CONTACT FORM ── */
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 12px; font-family: var(--font-mono); letter-spacing: 1.5px; text-transform: uppercase; color: var(--silver); }
.form-group input, .form-group select, .form-group textarea {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 16px;
  color: var(--paper); font-family: var(--font-body); font-size: 14px;
  transition: border-color 0.2s; outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--green); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select option { background: var(--bg-card); }

/* ── MISC UTILS ── */
.text-green { color: var(--green); }
.text-amber { color: var(--amber); }
.text-white { color: var(--white); }
.text-silver { color: var(--silver); }
.text-mono { font-family: var(--font-mono); }
.font-disp { font-family: var(--font-disp); }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }
.pt-top { padding-top: 68px; }
.bg-mid { background: var(--bg-mid); }
.bg-dark { background: var(--black); }
.inline-flex { display: inline-flex; align-items: center; gap: 8px; }
.separator { border: none; border-top: 1px solid var(--border); margin: 48px 0; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .fs-nav { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .section, .section-sm { padding: 64px 20px; }
  .hero { padding: 120px 20px 60px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .process-flow { flex-direction: column; }
  .process-step::after { display: none; }
  .cta-section { padding: 60px 20px; }
  .products-box{ display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:32px; }
}

@media (max-width: 480px) { 
.products-box{ display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:32px; }
}