/* =========================================================
   CFE Energy — shared stylesheet
   Design tokens: see :root
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* color */
  --ink: #0D1B1E;
  --ink-soft: #16292D;
  --paper: #F5F7F5;
  --paper-dim: #ECF0EE;
  --slate: #48575C;
  --slate-soft: #7C8B8E;
  --line: #D7DEDA;
  --line-on-ink: rgba(245,247,245,0.16);
  --signal: #0E9E85;
  --signal-strong: #087A67;
  --signal-tint: #DCF1EC;
  --amber: #D98F2B;
  --amber-tint: #F7E7CE;
  --radius-sm: 3px;
  --radius-md: 4px;
  --max: 1180px;
  --gutter: clamp(20px, 4vw, 56px);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:'Space Grotesk', 'Inter', sans-serif;
  font-weight:600;
  line-height:1.12;
  margin:0 0 0.5em;
  letter-spacing:-0.01em;
  color:var(--ink);
}
h1{ font-size:clamp(2.4rem, 4.4vw, 3.8rem); font-weight:700; letter-spacing:-0.02em; }
h2{ font-size:clamp(1.7rem, 2.6vw, 2.5rem); }
h3{ font-size:clamp(1.2rem, 1.6vw, 1.5rem); }
p{ margin:0 0 1em; color:var(--slate); max-width:62ch; }
a{ color:inherit; }
img{ max-width:100%; display:block; }
.mono{ font-family:'IBM Plex Mono', monospace; }

.wrap{ max-width:var(--max); margin:0 auto; padding:0 var(--gutter); }
.section{ padding:88px 0; }
.section-tight{ padding:56px 0; }
.on-ink{ background:var(--ink); color:var(--paper); }
.on-ink p{ color:#B9C6C4; }
.on-ink h1, .on-ink h2, .on-ink h3{ color:var(--paper); }
.on-dim{ background:var(--paper-dim); }

/* ---------- utility ---------- */
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.78rem;
  color:var(--signal-strong);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  letter-spacing:0.01em;
}
.on-ink .eyebrow{ color:#5FE0C4; }
.eyebrow::before{
  content:"";
  width:7px; height:7px;
  background:var(--signal);
  display:inline-block;
  border-radius:1px;
}
.lede{ font-size:1.15rem; max-width:52ch; }
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:var(--gutter); }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:32px; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:28px; }
@media (max-width: 880px){
  .grid-2, .grid-3, .grid-4{ grid-template-columns:1fr; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:'Inter', sans-serif;
  font-weight:600;
  font-size:0.95rem;
  padding:12px 22px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary{ background:var(--ink); color:var(--paper); }
.btn-primary:hover{ background:var(--signal-strong); }
.on-ink .btn-primary{ background:var(--signal); color:var(--ink); }
.on-ink .btn-primary:hover{ background:#5FE0C4; }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink); }
.on-ink .btn-ghost{ color:var(--paper); border-color:var(--line-on-ink); }
.on-ink .btn-ghost:hover{ border-color:var(--paper); }
.btn-row{ display:flex; gap:14px; flex-wrap:wrap; margin-top:28px; }

/* ---------- nav ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(245,247,245,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px var(--gutter);
  max-width:var(--max); margin:0 auto;
}
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.brand img{ height:22px; width:auto; }
.brand span{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.72rem; color:var(--slate-soft); letter-spacing:0.04em;
  border-left:1px solid var(--line); padding-left:10px; margin-left:2px;
}
.navlinks{ display:flex; align-items:center; gap:30px; list-style:none; margin:0; padding:0; }
.navlinks a{
  text-decoration:none; color:var(--slate); font-size:0.94rem; font-weight:500;
  padding:6px 0; border-bottom:2px solid transparent;
}
.navlinks a:hover, .navlinks a.active{ color:var(--ink); border-color:var(--signal); }
.nav-cta{ display:flex; align-items:center; gap:18px; }
.nav-toggle{ display:none; background:none; border:none; cursor:pointer; padding:6px; }
.nav-toggle span{ display:block; width:22px; height:2px; background:var(--ink); margin:5px 0; }

@media (max-width: 920px){
  .navlinks{
    position:fixed; inset:58px 0 0 0; background:var(--paper);
    flex-direction:column; align-items:flex-start; gap:0;
    padding:10px var(--gutter) 30px;
    transform:translateY(-110%); transition:transform .25s ease;
    border-bottom:1px solid var(--line);
  }
  .navlinks.open{ transform:translateY(0); }
  .navlinks li{ width:100%; border-bottom:1px solid var(--line); }
  .navlinks a{ display:block; padding:16px 0; }
  .nav-toggle{ display:block; }
  .nav-cta .btn-ghost{ display:none; }
}

/* ---------- footer ---------- */
footer.site{
  background:var(--ink); color:#B9C6C4; padding:64px 0 28px;
}
footer.site a{ color:#B9C6C4; text-decoration:none; }
footer.site a:hover{ color:var(--paper); }
.foot-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px;
  padding-bottom:48px; border-bottom:1px solid var(--line-on-ink);
}
.foot-grid h4{ color:var(--paper); font-size:0.85rem; font-family:'IBM Plex Mono',monospace; font-weight:500; letter-spacing:0.03em; margin-bottom:16px; }
.foot-grid ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; font-size:0.92rem; }
.foot-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:24px; font-size:0.82rem; flex-wrap:wrap; gap:12px; }
.foot-brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.foot-brand img{ height:30px; }
@media (max-width: 880px){
  .foot-grid{ grid-template-columns:1fr 1fr; }
}

/* ---------- hour grid motif ---------- */
.hourgrid-strip{
  display:flex; align-items:flex-end; gap:3px; height:64px;
}
.hourgrid-strip .bar{
  flex:1; background:var(--line); border-radius:1px 1px 0 0;
}
.hourgrid-strip .bar.matched{ background:var(--signal); }
.hourgrid-strip .bar.partial{ background:var(--amber); }
.on-ink .hourgrid-strip .bar{ background:rgba(245,247,245,0.14); }

.hourgrid-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:22px 0;
  background:var(--paper-dim);
  overflow:hidden;
}
.hourgrid-band .wrap{ display:flex; align-items:center; gap:24px; }
.hourgrid-band .hourgrid-strip{ height:34px; flex:1; }
.hourgrid-band .readout{
  font-family:'IBM Plex Mono', monospace; font-size:0.78rem; color:var(--slate);
  white-space:nowrap; display:flex; gap:18px;
}
.readout b{ color:var(--ink); }
@media (max-width: 700px){
  .hourgrid-band .readout{ display:none; }
}

/* ---------- hero ---------- */
.hero{ padding:74px 0 0; }
.hero .wrap{ display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:center; }
.hero-visual{
  background:var(--ink); border-radius:var(--radius-md);
  padding:28px 26px 22px; color:var(--paper);
}
.hero-visual .vh{ display:flex; justify-content:space-between; align-items:baseline; margin-bottom:18px; font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:#7FE7D0; }
.hero-visual .vh .dim{ color:#7C8B8E; }
.hero-visual .hourgrid-strip{ height:120px; margin-bottom:12px; }
.hour-labels{ display:flex; justify-content:space-between; font-family:'IBM Plex Mono',monospace; font-size:0.68rem; color:#7C8B8E; margin-bottom:16px; }
.vfoot{ display:flex; justify-content:space-between; align-items:center; border-top:1px solid var(--line-on-ink); padding-top:14px; font-size:0.82rem; }
.vfoot .pct{ font-family:'Space Grotesk',sans-serif; font-size:1.7rem; font-weight:700; color:var(--paper); }
.vfoot .pct span{ font-size:0.9rem; color:#7FE7D0; font-family:'IBM Plex Mono',monospace; font-weight:400; margin-left:6px; }
.legend{ display:flex; gap:16px; font-size:0.76rem; color:#B9C6C4; }
.legend i{ width:8px; height:8px; display:inline-block; border-radius:1px; margin-right:5px; }

/* ---------- cards ---------- */
.card{
  border:1px solid var(--line); padding:28px 26px; border-radius:var(--radius-md); background:var(--paper);
}
.card h3{ margin-bottom:10px; }
.card p{ margin-bottom:0; font-size:0.95rem; }
.card .idx{ font-family:'IBM Plex Mono',monospace; color:var(--signal-strong); font-size:0.8rem; margin-bottom:14px; display:block; }

.stat{ border-top:2px solid var(--ink); padding-top:14px; }
.stat .num{ font-family:'Space Grotesk',sans-serif; font-size:2.6rem; font-weight:700; }
.stat .lbl{ font-size:0.85rem; color:var(--slate); }
.on-ink .stat{ border-color:var(--signal); }

table.spec{ width:100%; border-collapse:collapse; font-size:0.94rem; }
table.spec th, table.spec td{ text-align:left; padding:14px 16px; border-bottom:1px solid var(--line); vertical-align:top; }
table.spec th{ font-family:'IBM Plex Mono',monospace; font-weight:500; font-size:0.8rem; color:var(--slate-soft); text-transform:none; width:22%; }
table.spec tr:last-child td, table.spec tr:last-child th{ border-bottom:none; }

.step{ display:flex; gap:20px; padding:26px 0; border-bottom:1px solid var(--line); }
.step:last-child{ border-bottom:none; }
.step .n{ font-family:'Space Grotesk',sans-serif; font-size:1.6rem; font-weight:700; color:var(--line); width:44px; flex:none; }
.step h3{ margin-bottom:6px; }

.pillrow{ display:flex; flex-wrap:wrap; gap:10px; margin:18px 0; }
.pill{
  font-family:'IBM Plex Mono',monospace; font-size:0.78rem; color:var(--slate);
  border:1px solid var(--line); padding:6px 12px; border-radius:20px;
}

.cta-band{ text-align:left; padding:80px 0; }
.cta-band h2{ max-width:14ch; }

.divider{ border:none; border-top:1px solid var(--line); margin:0; }

.quote{
  border-left:2px solid var(--signal); padding-left:22px; font-family:'Space Grotesk',sans-serif;
  font-size:1.25rem; font-weight:500; color:var(--ink); max-width:56ch;
}

@media (max-width: 880px){
  .hero .wrap{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr; gap:28px; }
}