/* SiquijorSolar.com, mobile-first */
:root {
  --sun: #F5A623;
  --sun-dark: #B97A0D;
  --sun-bg: #FEF6E7;
  --green: #1D9E75;
  --green-dark: #0F6E56;
  --green-bg: #E7F6F0;
  --ink: #14222B;
  --ink-soft: #4A5A64;
  --paper: #FFFFFF;
  --paper-tint: #F6F8F7;
  --dark: #06322A;
  --dark-text: #BFE8D9;
  --line: #E3E8E6;
  --radius: 12px;
  --maxw: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.icon { fill: currentColor; vertical-align: -0.18em; flex-shrink: 0; }
h1 { font-size: 1.9rem; line-height: 1.2; letter-spacing: -0.5px; }
h2 { font-size: 1.5rem; line-height: 1.25; margin-bottom: 8px; }
h3 { font-size: 1.05rem; }
a { color: var(--green-dark); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); }
.brand-name { font-weight: 700; font-size: 1.05rem; letter-spacing: -0.2px; }
.brand-name em { font-style: normal; color: var(--sun-dark); }
.site-nav { display: none; gap: 22px; }
.site-nav a { display: inline-flex; align-items: center; gap: 6px; text-decoration: none; color: var(--ink-soft); font-size: 0.92rem; font-weight: 500; }
.site-nav .icon { color: var(--green-dark); }
.site-nav a:hover { color: var(--green-dark); }
.nav-toggle { background: none; border: 0; color: var(--ink); padding: 6px; cursor: pointer; display: block; }
.site-nav.open {
  display: flex; flex-direction: column; position: absolute;
  top: 60px; left: 0; right: 0; background: var(--paper);
  border-bottom: 1px solid var(--line); padding: 14px 20px; gap: 14px;
}

/* Hero */
.hero { padding: 56px 0 40px; text-align: center; background: linear-gradient(180deg, var(--sun-bg) 0%, var(--paper) 100%); }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--green-bg); color: var(--green-dark);
  font-size: 0.82rem; font-weight: 600;
  padding: 5px 14px; border-radius: 99px; margin-bottom: 18px;
}
.hero h1 { max-width: 620px; margin: 0 auto 14px; }
.hl { background: linear-gradient(transparent 62%, #FCD980 62%); padding: 0 2px; }
.hero-sub { max-width: 560px; margin: 0 auto 26px; color: var(--ink-soft); font-size: 1.02rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 10px;
  font-weight: 600; font-size: 0.98rem; text-decoration: none;
  transition: transform 0.06s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--sun); color: #3A2604; }
.btn-primary:hover { background: #E29612; }
.btn-ghost { border: 1.5px solid var(--line); color: var(--ink-soft); background: var(--paper); }
.btn-ghost:hover { border-color: var(--green); color: var(--green-dark); }

/* Trust strip */
.trust-strip { background: var(--dark); color: var(--dark-text); padding: 13px 0; }
.trust-inner { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: center; font-size: 0.85rem; }
.trust-inner span { display: inline-flex; align-items: center; gap: 7px; }
.trust-inner .icon { color: var(--sun); }

/* Sections */
.section { padding: 52px 0; }
.section-tinted { background: var(--paper-tint); }
.section-sub { color: var(--ink-soft); max-width: 600px; margin-bottom: 28px; }
.hl-icon { color: var(--sun-dark); }

/* Steps */
.steps { display: grid; gap: 16px; margin-top: 24px; }
.step { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.step-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--sun-bg); color: var(--sun-dark);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.step h3 { margin-bottom: 6px; }
.step p { color: var(--ink-soft); font-size: 0.93rem; }

/* Calculator */
.calc { display: grid; gap: 24px; margin-top: 8px; }
.calc-inputs { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.calc-label { display: flex; justify-content: space-between; align-items: baseline; font-weight: 600; font-size: 0.95rem; margin-bottom: 10px; }
.calc-label output { color: var(--green-dark); font-size: 1.2rem; font-variant-numeric: tabular-nums; }
input[type="range"] { width: 100%; accent-color: var(--sun); height: 32px; cursor: pointer; }
.range-hints { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--ink-soft); margin: 2px 0 22px; }
.seg { display: flex; gap: 8px; }
.seg-btn {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 11px 8px; border-radius: 10px; border: 1.5px solid var(--line);
  background: var(--paper); color: var(--ink-soft);
  font-size: 0.9rem; font-weight: 600; cursor: pointer;
}
.seg-btn.active { border-color: var(--green); background: var(--green-bg); color: var(--green-dark); }
.calc-note { font-size: 0.84rem; color: var(--ink-soft); margin-top: 12px; min-height: 2.6em; }
.calc-results { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-content: start; }
.result-card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 16px;
  display: flex; flex-direction: column; gap: 2px;
}
.result-card strong { font-size: 1.25rem; letter-spacing: -0.3px; font-variant-numeric: tabular-nums; }
.result-card small { color: var(--ink-soft); font-size: 0.78rem; }
.result-label { display: inline-flex; align-items: center; gap: 6px; font-size: 0.8rem; font-weight: 600; color: var(--ink-soft); }
.result-good { background: var(--green-bg); border-color: #BFE3D6; }
.result-good strong, .result-good .result-label { color: var(--green-dark); }
.result-good small { color: var(--green-dark); opacity: 0.8; }
.disclaimer { font-size: 0.8rem; color: var(--ink-soft); margin-top: 18px; max-width: 640px; }
.calc-cta { margin-top: 20px; }

/* Packages */
.packages { display: grid; gap: 18px; }
.pkg { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.pkg-featured { border: 2px solid var(--green); }
.pkg-badge {
  position: absolute; top: -12px; left: 22px;
  background: var(--green); color: #fff;
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.3px;
  padding: 3px 12px; border-radius: 99px;
}
.pkg-icon {
  width: 52px; height: 52px; border-radius: 13px;
  background: var(--sun-bg); color: var(--sun-dark);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.pkg h3 { font-size: 1.2rem; }
.pkg-size { color: var(--ink-soft); font-size: 0.88rem; margin-bottom: 10px; }
.pkg-price { font-size: 0.95rem; color: var(--ink-soft); margin-bottom: 14px; }
.pkg-price strong { font-size: 1.45rem; color: var(--ink); letter-spacing: -0.4px; }
.pkg ul { list-style: none; display: grid; gap: 8px; }
.pkg li { font-size: 0.9rem; color: var(--ink-soft); padding-left: 22px; position: relative; }
.pkg li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }
.pkg-addon {
  margin-top: 22px; font-size: 0.92rem; color: var(--ink-soft);
  background: var(--green-bg); border-radius: 10px; padding: 13px 16px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.pkg-addon .icon { color: var(--green-dark); }

/* Standard (dark section) */
.section-dark { background: var(--dark); color: #fff; }
.section-dark h2 { color: #fff; }
.section-dark .section-sub { color: var(--dark-text); }
.standard-grid { display: grid; gap: 16px; margin-top: 24px; }
.std { display: flex; gap: 14px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius); padding: 18px; }
.std > .icon { color: var(--sun); margin-top: 3px; }
.std h3 { margin-bottom: 4px; font-size: 1rem; }
.std p { color: var(--dark-text); font-size: 0.9rem; }
.standard-kicker {
  margin-top: 24px; display: flex; align-items: center; gap: 10px;
  font-weight: 600; color: var(--sun); font-size: 0.97rem;
}

/* For installers */
.installers-inner { max-width: 720px; }
.installers-inner p { color: var(--ink-soft); margin-bottom: 14px; }
.installers-inner p strong { color: var(--ink); }
.check-list { list-style: none; display: grid; gap: 10px; margin: 6px 0 24px; }
.check-list li { display: flex; align-items: center; gap: 10px; font-weight: 500; }
.check-list .icon { color: var(--green); }

/* FAQ */
.faq-list { display: grid; gap: 10px; max-width: 760px; }
details { background: var(--paper); border: 1px solid var(--line); border-radius: 10px; }
summary {
  list-style: none; cursor: pointer; padding: 15px 18px;
  font-weight: 600; font-size: 0.96rem;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
summary::-webkit-details-marker { display: none; }
.caret { color: var(--ink-soft); transition: transform 0.2s ease; }
details[open] .caret { transform: rotate(180deg); }
details p { padding: 0 18px 16px; color: var(--ink-soft); font-size: 0.92rem; }

/* Footer */
.site-footer { background: var(--dark); color: var(--dark-text); padding: 36px 0; text-align: center; font-size: 0.9rem; }
.footer-brand { justify-content: center; color: #fff; margin-bottom: 10px; }
.footer-brand .brand-name em { color: var(--sun); }
.site-footer a { color: var(--sun); text-decoration: none; }
.footer-fine { margin-top: 14px; font-size: 0.78rem; opacity: 0.7; }

/* Desktop */
@media (min-width: 760px) {
  h1 { font-size: 2.6rem; }
  h2 { font-size: 1.8rem; }
  .nav-toggle { display: none; }
  .site-nav { display: flex; }
  .hero { padding: 84px 0 64px; }
  .section { padding: 72px 0; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .calc { grid-template-columns: 5fr 6fr; align-items: start; }
  .packages { grid-template-columns: repeat(3, 1fr); }
  .standard-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}