/* Energy Managers landing page */

:root {
  --green-600: #16a34a;
  --green-500: #22c55e;
  --green-700: #15803d;
  --navy-900: #0a1622;
  --navy-800: #0f2135;
  --ink: #14202e;
  --slate-600: #475569;
  --slate-500: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f4f8f5;
  --amber: #fbbf24;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(10, 22, 34, 0.08);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1rem; }
a { color: var(--green-600); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 800px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--navy-900); color: #fff; padding: 8px 16px; z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--green-500); color: var(--navy-900);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.35);
}
.btn-primary:hover { background: var(--green-600); color: #fff; }
.btn-ghost { border-color: rgba(255, 255, 255, 0.5); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); }
.btn-sm { padding: 9px 18px; font-size: 0.9rem; }
.btn-block { width: 100%; }

/* ---------- Nav ---------- */

.site-nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(10, 22, 34, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand {
  display: flex; align-items: center; gap: 10px;
  color: #fff; font-weight: 700; font-size: 1.1rem; letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand-mark { width: 26px; height: 26px; color: var(--green-500); }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: #cbd5e1; font-size: 0.95rem; }
.nav-links a:hover { color: #fff; text-decoration: none; }
.nav-links .nav-cta { color: var(--navy-900); }
.nav-links .nav-cta:hover { color: #fff; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; padding: 8px; cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: #fff; border-radius: 2px; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 170px 0 90px;
  color: #fff;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(34, 197, 94, 0.25), transparent 60%),
    radial-gradient(700px 500px at 10% 110%, rgba(34, 197, 94, 0.12), transparent 60%),
    linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 55%, #10331f 100%);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 780px; }
.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--green-600);
  margin-bottom: 14px;
}
.hero .eyebrow, .eyebrow-light { color: var(--green-500); }
.hero h1 { font-size: clamp(2.4rem, 5.4vw, 3.9rem); color: #fff; }
.text-accent { color: var(--green-500); }
.hero-sub { font-size: 1.15rem; color: #cbd5e1; max-width: 620px; margin-bottom: 32px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 56px; }

.hero-proof {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  list-style: none; margin: 0; padding: 28px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.hero-proof strong { display: block; font-size: 1.25rem; color: #fff; }
.hero-proof span { font-size: 0.85rem; color: #94a3b8; }

/* ---------- Sections ---------- */

.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark {
  background: linear-gradient(180deg, var(--navy-900), var(--navy-800));
  color: #e2e8f0;
}
.section-dark h2 { color: #fff; }
.section-sub { color: var(--slate-600); max-width: 640px; font-size: 1.05rem; }
.section-dark .section-sub { color: #94a3b8; }

.grid { display: grid; gap: 24px; margin-top: 48px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--slate-600); margin: 0; font-size: 0.97rem; }
.card-icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  font-size: 1.4rem;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 16px;
}
.card-dark { background: rgba(255, 255, 255, 0.04); border-color: rgba(255, 255, 255, 0.1); box-shadow: none; }
.card-dark p { color: #cbd5e1; }

/* ---------- Stats & testimonials ---------- */

.stats { text-align: center; }
.stat strong {
  display: block;
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--green-500);
  letter-spacing: -0.02em;
}
.stat span { font-size: 0.9rem; color: #94a3b8; }

.testimonials blockquote { margin: 0; }
.testimonials footer { margin-top: 16px; font-size: 0.85rem; color: #7d8fa3; font-weight: 600; }

.track-record {
  margin-top: 48px;
  padding: 32px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
}
.track-record p { margin: 0 0 12px; color: #cbd5e1; font-size: 1.05rem; }
.track-record .track-record-note { margin-bottom: 0; color: #94a3b8; font-size: 0.95rem; }
.track-record a { color: var(--green-500); font-weight: 600; }

/* ---------- Process ---------- */

.process { list-style: none; padding: 0; counter-reset: step; }
.process-step { position: relative; padding-top: 56px; }
.step-num {
  position: absolute; top: 20px; left: 24px;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: var(--green-600); color: #fff;
  border-radius: 50%;
  font-weight: 700;
}

/* ---------- Split / checklist ---------- */

.split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.checklist li {
  position: relative;
  padding: 18px 18px 18px 52px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--slate-600);
  font-size: 0.97rem;
}
.checklist li strong { color: var(--ink); }
.checklist li::before {
  content: "✓";
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  width: 24px; height: 24px;
  display: grid; place-items: center;
  background: var(--green-500); color: var(--navy-900);
  border-radius: 50%;
  font-size: 0.8rem; font-weight: 700;
}

/* ---------- FAQ ---------- */

.faq-list { margin-top: 40px; display: grid; gap: 12px; }
.faq-list details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 22px;
}
.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-size: 1.3rem; color: var(--green-600);
  transition: transform 0.15s ease;
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { margin: 12px 0 0; color: var(--slate-600); }

/* ---------- Contact ---------- */

.contact-details { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 12px; }
.contact-details li { display: flex; align-items: center; gap: 12px; color: #cbd5e1; }
.contact-details a { color: #fff; }

.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  color: var(--ink);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.contact-form { display: grid; gap: 16px; margin-top: 12px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: grid; gap: 6px; }
.form-field label { font-size: 0.85rem; font-weight: 600; color: var(--slate-600); }
.field-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  color: var(--ink);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field-input:focus {
  outline: none;
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
}
textarea.field-input { resize: vertical; }
.errorlist { margin: 0; padding: 0; list-style: none; color: #dc2626; font-size: 0.82rem; }
.form-note { margin: 0; font-size: 0.8rem; color: var(--slate-500); text-align: center; }

/* Honeypot: off-screen, invisible to humans */
.hp-wrap { position: absolute; left: -5000px; top: -5000px; height: 1px; width: 1px; overflow: hidden; }

.alert {
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 0.95rem;
  margin-bottom: 4px;
}
.alert-success { background: #dcfce7; color: #14532d; border: 1px solid #86efac; }
.alert-error { background: #fee2e2; color: #7f1d1d; border: 1px solid #fca5a5; }

/* ---------- Footer ---------- */

.site-footer { background: var(--navy-900); color: #94a3b8; padding: 40px 0; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: #cbd5e1; font-size: 0.9rem; }
.footer-links a:hover { color: #fff; text-decoration: none; }
.footer-note { margin: 0; font-size: 0.85rem; }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .hero-proof { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 68px; right: 0; left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--navy-900);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 8px 24px 20px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; }
  .nav-links .nav-cta { margin-top: 10px; text-align: center; }
}