/* ===== Theme tokens ===== */
:root {
  --bg: #ffffff;
  --bg-soft: #f2f7f4;
  --card: #ffffff;
  --text: #121a24;
  --muted: #5b6876;
  --border: #e3ebe6;
  --primary: #259560;
  --primary-strong: #1c7a4e;
  --primary-soft: #e3f4ea;
  --accent: #2e8a7f;
  --amber: #d98a1c;
  --shadow: 0 10px 30px -12px rgba(18, 60, 40, 0.18);
  --radius: 16px;
  --max: 1180px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1310;
    --bg-soft: #131c17;
    --card: #16211b;
    --text: #eef3f7;
    --muted: #9aaab4;
    --border: #23332a;
    --primary: #31c47e;
    --primary-strong: #4fd492;
    --primary-soft: #183326;
    --accent: #3fb3a3;
    --shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
  }
}
:root[data-theme="dark"] {
  --bg: #0d1310;
  --bg-soft: #131c17;
  --card: #16211b;
  --text: #eef3f7;
  --muted: #9aaab4;
  --border: #23332a;
  --primary: #31c47e;
  --primary-strong: #4fd492;
  --primary-soft: #183326;
  --accent: #3fb3a3;
  --shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.5em; letter-spacing: -0.02em; }
p { margin: 0 0 1em; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.section { padding: 88px 0; }
.section.soft { background: var(--bg-soft); }
.muted { color: var(--muted); }
.center { text-align: center; }
.hl { color: var(--primary); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.82rem; font-weight: 600; color: var(--primary);
  background: var(--primary-soft); padding: 6px 14px; border-radius: 999px;
  margin-bottom: 18px;
}
.section-head { max-width: 680px; margin: 0 auto 52px; text-align: center; }
.section-head h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
.section-head p { color: var(--muted); font-size: 1.08rem; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 12px; font-weight: 600; font-size: 0.98rem;
  border: 1px solid transparent; cursor: pointer; transition: all 0.2s ease;
  font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-strong); transform: translateY(-1px); }
.btn-outline { border-color: var(--border); background: var(--card); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-light { background: #fff; color: #1c7a4e; }
.btn-light:hover { transform: translateY(-1px); }
.btn-ghost-light { border-color: rgba(255,255,255,0.5); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,0.12); }

/* ===== Navbar ===== */
.navbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; white-space: nowrap; }
@media (max-width: 380px) { .logo { font-size: 1.05rem; } }
.logo-img { width: 40px; height: 40px; object-fit: contain; flex-shrink: 0; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
}
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links > li { position: relative; }
.nav-links a, .nav-links button.dd-toggle {
  display: block; padding: 8px 14px; border-radius: 10px; font-weight: 500; font-size: 0.95rem;
  color: var(--muted); background: none; border: 0; cursor: pointer; font-family: inherit;
}
.nav-links a:hover, .nav-links a.active, .nav-links button.dd-toggle:hover { color: var(--text); background: var(--bg-soft); }
.dropdown {
  position: absolute; top: 100%; left: 0; min-width: 240px; padding: 8px;
  background: var(--card); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow);
  list-style: none; margin: 6px 0 0; opacity: 0; visibility: hidden; transform: translateY(6px); transition: all 0.18s ease;
}
.has-dd:hover .dropdown, .has-dd:focus-within .dropdown { opacity: 1; visibility: visible; transform: none; }
.dropdown a { color: var(--text); }
.dropdown small { display: block; color: var(--muted); font-weight: 400; font-size: 0.8rem; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--card); color: var(--text); cursor: pointer; display: grid; place-items: center; font-size: 1.05rem;
}
.menu-toggle { display: none; }

/* ===== Hero ===== */
.hero { position: relative; overflow: hidden; padding: 80px 0 96px; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(600px 400px at 85% 10%, color-mix(in srgb, var(--primary) 18%, transparent), transparent 70%),
    radial-gradient(500px 360px at 5% 90%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.3rem, 5.5vw, 3.9rem); font-weight: 800; }
.hero p.lead { font-size: 1.15rem; color: var(--muted); max-width: 540px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 36px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 32px; }
.hero-stats strong { display: block; font-size: 1.7rem; font-weight: 800; color: var(--primary); }
.hero-stats span { color: var(--muted); font-size: 0.9rem; }

/* dashboard mock card */
.mock {
  background: var(--card); border: 1px solid var(--border); border-radius: 22px; padding: 22px;
  box-shadow: var(--shadow); position: relative;
}
.mock-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.mock-head h4 { margin: 0; font-size: 1rem; }
.live { font-size: 0.75rem; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.live::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }
.readings { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.reading { background: var(--bg-soft); border-radius: 12px; padding: 12px; }
.reading small { color: var(--muted); font-size: 0.75rem; display: block; }
.reading b { font-size: 1.15rem; }
.bar { height: 6px; border-radius: 6px; background: var(--border); margin-top: 8px; overflow: hidden; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 6px; }
.rec {
  margin-top: 14px; padding: 14px; border-radius: 12px; border: 1px dashed var(--primary);
  background: var(--primary-soft); font-size: 0.9rem;
}
.rec b { color: var(--primary-strong); }
.float-badge {
  position: absolute; bottom: -18px; left: -18px; background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; padding: 10px 14px; box-shadow: var(--shadow); font-size: 0.85rem; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
}

/* ===== Cards / grids ===== */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.card h3 { font-size: 1.12rem; }
.card p { color: var(--muted); margin: 0; font-size: 0.95rem; }
.icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; font-size: 1.4rem;
  background: var(--primary-soft); margin-bottom: 18px;
}
.card .more { display: inline-block; margin-top: 16px; font-weight: 600; color: var(--primary); font-size: 0.92rem; }

/* solution cards bigger */
.solution { padding: 32px; display: flex; flex-direction: column; }
.solution ul { margin: 14px 0 0; padding: 0; list-style: none; }
.solution li { padding: 4px 0 4px 26px; position: relative; color: var(--muted); font-size: 0.93rem; }
.solution li::before { content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 700; }
.solution .more { margin-top: auto; padding-top: 18px; }

/* steps */
.steps { counter-reset: step; }
.step { position: relative; }
.step .num {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; color: var(--primary); margin-bottom: 10px; display: block;
}

/* stats band */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats-band strong { display: block; font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: var(--primary); }
.stats-band span { color: var(--muted); }

/* testimonials */
.quote-card blockquote { margin: 0 0 18px; font-size: 1.02rem; color: var(--text); }
.stars { color: var(--amber); letter-spacing: 2px; margin-bottom: 12px; }
.who { display: flex; align-items: center; gap: 12px; }
.avatar {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.who small { display: block; color: var(--muted); }

/* FAQ */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: 14px; margin-bottom: 12px; background: var(--card); overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; padding: 18px 22px; background: none; border: 0; cursor: pointer;
  font: inherit; font-weight: 600; color: var(--text); display: flex; justify-content: space-between; gap: 16px;
}
.faq-q::after { content: "+"; color: var(--primary); font-size: 1.3rem; line-height: 1; transition: transform 0.2s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a p { padding: 0 22px 18px; color: var(--muted); margin: 0; }

/* CTA band */
.cta {
  border-radius: 28px; padding: 64px 32px; text-align: center; color: #fff;
  background: linear-gradient(135deg, #1c7a4e, #2e8a7f);
  position: relative; overflow: hidden;
}
.cta h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.cta p { opacity: 0.9; max-width: 560px; margin: 0 auto 28px; }
.cta .btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ===== Tool / forms ===== */
.tool { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
label { font-size: 0.86rem; font-weight: 600; }
input, select, textarea {
  font: inherit; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--primary) 50%, transparent); border-color: var(--primary); }
textarea { min-height: 130px; resize: vertical; }
.result-empty { display: grid; place-items: center; text-align: center; min-height: 320px; color: var(--muted); }
.result-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); gap: 12px; }
.result-row:last-child { border-bottom: 0; }
.tag { font-size: 0.75rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.tag.low { background: #fde8e8; color: #b42318; }
.tag.ok { background: var(--primary-soft); color: var(--primary-strong); }
.tag.high { background: #fff1db; color: #a15c07; }
.total { margin-top: 16px; padding: 16px; border-radius: 12px; background: var(--primary-soft); display: flex; justify-content: space-between; font-weight: 700; }

.dropzone {
  border: 2px dashed var(--border); border-radius: 16px; padding: 40px 20px; text-align: center; cursor: pointer;
  transition: border-color 0.2s, background 0.2s; color: var(--muted);
}
.dropzone:hover, .dropzone.drag { border-color: var(--primary); background: var(--primary-soft); }
.dropzone img { max-height: 240px; margin: 0 auto 12px; border-radius: 12px; }

/* page hero (inner pages) */
.page-hero { padding: 72px 0 40px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; }
.page-hero p { color: var(--muted); max-width: 640px; margin: 0 auto; font-size: 1.1rem; }

.tabs { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.tab { padding: 10px 18px; border-radius: 999px; border: 1px solid var(--border); background: var(--card); cursor: pointer; font: inherit; font-weight: 600; color: var(--muted); }
.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.panel { display: none; }
.panel.active { display: block; }

.contact-item { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
.contact-item .icon { margin: 0; flex-shrink: 0; }
.success { text-align: center; padding: 40px 10px; }

/* ===== Footer ===== */
footer { border-top: 1px solid var(--border); padding: 64px 0 28px; background: var(--bg-soft); }
.foot-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 32px; }
.foot-grid h4 { font-size: 0.95rem; margin-bottom: 14px; }
.foot-grid ul { list-style: none; margin: 0; padding: 0; }
.foot-grid li { margin-bottom: 9px; }
.foot-grid li a { color: var(--muted); font-size: 0.92rem; }
.foot-grid li a:hover { color: var(--primary); }
.foot-bottom { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--muted); font-size: 0.88rem; }
.foot-bottom a:hover { color: var(--primary); }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.22,1,.36,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .hero-grid, .tool { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-grid > div:first-child { grid-column: 1 / -1; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .menu-toggle { display: grid; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--bg); border-bottom: 1px solid var(--border); padding: 12px 16px 20px;
    display: none; max-height: calc(100vh - 68px); overflow-y: auto;
  }
  .nav-links.open { display: flex; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 0 12px; margin: 0; display: none; }
  .has-dd.open .dropdown { display: block; }
  .nav-actions .btn { display: none; }
}
@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .grid-2, .grid-3, .grid-4, .form-grid { grid-template-columns: 1fr; }
  .readings { grid-template-columns: repeat(2, 1fr); }
  .float-badge { left: 8px; }
  .cta { padding: 48px 20px; border-radius: 20px; }
}