/* ==========================================================================
   Eco Utilities — front-end styles
   Identity: an "energy flow" gradient (cool electric blue -> warm flame amber)
   drawn straight from the logo. Boldness lives in the hero; everything else
   stays disciplined.
   ========================================================================== */

:root {
  --ink:        #0B1220;
  --ink-2:      #161F30;
  --slate:      #4A566B;
  --muted:      #6B7688;
  --line:       #E5EAF2;
  --paper:      #F5F8FC;
  --white:      #FFFFFF;

  --blue:       #1E6FE8;
  --blue-deep:  #0B45B0;
  --amber:      #FF8A1E;
  --amber-hot:  #FFB020;
  --green:      #14B26B;

  --grad:      linear-gradient(115deg, var(--blue) 0%, #6A54E0 45%, var(--amber) 100%);
  --grad-soft: linear-gradient(115deg, rgba(30,111,232,.12), rgba(255,138,30,.12));

  --shadow-sm: 0 2px 10px rgba(11,18,32,.06);
  --shadow-md: 0 12px 34px rgba(11,18,32,.10);
  --shadow-lg: 0 30px 70px rgba(11,18,32,.16);

  --r:   16px;
  --r-lg: 26px;
  --wrap: 1180px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}
h1,h2,h3,h4 { font-family: 'Sora', sans-serif; line-height: 1.1; margin: 0 0 .5em; letter-spacing: -.02em; }
p { margin: 0 0 1rem; color: var(--slate); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { width: min(var(--wrap), 92vw); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: .6rem 1rem; z-index: 200; }
.skip:focus { left: 12px; top: 12px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: 'Sora', sans-serif; font-weight: 600; font-size: .72rem;
  letter-spacing: .18em; text-transform: uppercase; color: var(--blue);
  margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--grad); border-radius: 2px; }
.gradient-text {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: 'Sora', sans-serif; font-weight: 600; font-size: .95rem;
  padding: .85rem 1.5rem; border-radius: 999px; border: 0; cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  white-space: nowrap;
}
.btn .ico { width: 18px; height: 18px; fill: currentColor; }
.btn-grad { background: var(--grad); color: #fff; box-shadow: 0 10px 26px rgba(30,111,232,.32); background-size: 160% 160%; }
.btn-grad:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(30,111,232,.42); background-position: 100% 0; }
.btn-ghost { background: rgba(255,255,255,.08); color: #fff; border: 1px solid rgba(255,255,255,.28); }
.btn-ghost:hover { background: rgba(255,255,255,.16); transform: translateY(-3px); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn-line { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn-line:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-3px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.82); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: .3s var(--ease);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-bottom-color: var(--line); }
.header-inner { display: flex; align-items: center; gap: 1.5rem; height: 84px; transition: height .3s var(--ease); }
.site-header.scrolled .header-inner { height: 68px; }
.brand-logo { height: 38px; width: auto; transition: height .3s var(--ease); }
.site-header.scrolled .brand-logo { height: 32px; }
.main-nav { display: flex; gap: .35rem; margin-left: auto; }
.main-nav a {
  font-family: 'Sora', sans-serif; font-weight: 600; font-size: .92rem; color: var(--ink-2);
  padding: .5rem .9rem; border-radius: 999px; position: relative; transition: .2s;
}
.main-nav a:hover { color: var(--blue); }
.main-nav a.active { color: var(--blue); }
.main-nav a.active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%);
  width: 18px; height: 3px; border-radius: 3px; background: var(--grad);
}
.header-cta { margin-left: .25rem; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; margin-left: auto; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none; flex-direction: column; gap: .25rem; padding: 0 4vw;
  max-height: 0; overflow: hidden; transition: max-height .4s var(--ease), padding .4s var(--ease);
  background: #fff; border-bottom: 1px solid var(--line);
}
.mobile-nav.open { max-height: 420px; padding: 1rem 4vw 1.5rem; }
.mobile-nav a { font-family: 'Sora', sans-serif; font-weight: 600; padding: .8rem .4rem; border-bottom: 1px solid var(--line); }
.mobile-nav a.active { color: var(--blue); }
.mobile-nav .btn { margin-top: 1rem; justify-content: center; }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--ink); color: #fff; overflow: hidden; padding: 5.5rem 0 6rem; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 130%;
  background:
    radial-gradient(50% 55% at 18% 20%, rgba(30,111,232,.55), transparent 60%),
    radial-gradient(45% 50% at 82% 30%, rgba(255,138,30,.42), transparent 60%),
    radial-gradient(60% 60% at 60% 90%, rgba(106,84,224,.40), transparent 60%);
  filter: blur(10px); animation: drift 16s ease-in-out infinite alternate;
}
@keyframes drift {
  0%   { transform: translate3d(0,0,0) scale(1); }
  100% { transform: translate3d(-3%,2%,0) scale(1.08); }
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 54px 54px; mask-image: radial-gradient(70% 70% at 50% 30%, #000, transparent 80%);
}
.hero-inner { position: relative; z-index: 2; max-width: 780px; }
.hero .eyebrow { color: #9CC0FF; }
.hero .eyebrow::before { background: linear-gradient(90deg, var(--blue), var(--amber)); }
.hero h1 { font-size: clamp(2.4rem, 5.4vw, 4rem); font-weight: 800; letter-spacing: -.03em; }
.hero p.lead { font-size: clamp(1.05rem, 1.6vw, 1.28rem); color: rgba(255,255,255,.82); max-width: 60ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 1.5rem 2.5rem; margin-top: 3rem; padding-top: 1.8rem; border-top: 1px solid rgba(255,255,255,.14); }
.hero-trust .t { display: flex; align-items: center; gap: .6rem; color: rgba(255,255,255,.82); font-size: .92rem; }
.hero-trust .t svg { width: 20px; height: 20px; fill: var(--green); flex: none; }

/* ---------- Stats band ---------- */
.stats { margin-top: -3.2rem; position: relative; z-index: 5; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--r-lg);
  overflow: hidden; box-shadow: var(--shadow-lg);
}
.stat { background: #fff; padding: 2rem 1.5rem; text-align: center; }
.stat .num { font-family: 'Sora', sans-serif; font-weight: 800; font-size: clamp(1.9rem, 3.4vw, 2.7rem); letter-spacing: -.03em; }
.stat .num .gradient-text { display: inline; }
.stat .lbl { color: var(--muted); font-size: .9rem; font-weight: 500; }

/* ---------- Sections ---------- */
.section { padding: 6rem 0; }
.section.tight { padding: 4.5rem 0; }
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); font-weight: 700; }
.section-head p { font-size: 1.08rem; }
.bg-paper { background: var(--paper); }

/* ---------- Split intro ---------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3.5rem; align-items: center; }
.split .media {
  border-radius: var(--r-lg); background: var(--grad); aspect-ratio: 4/3; position: relative; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.split .media::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 60% at 30% 20%, rgba(255,255,255,.35), transparent 60%);
}
.split .media .badge {
  position: absolute; left: 24px; bottom: 24px; right: 24px; z-index: 2;
  background: rgba(11,18,32,.55); backdrop-filter: blur(8px); color: #fff;
  padding: 1.2rem 1.4rem; border-radius: var(--r); border: 1px solid rgba(255,255,255,.18);
}
.split .media .badge strong { font-family: 'Sora',sans-serif; font-size: 1.15rem; display: block; margin-bottom: .2rem; }
.split .media .badge span { color: rgba(255,255,255,.8); font-size: .9rem; }

/* ---------- Service cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 2rem;
  position: relative; overflow: hidden; transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease);
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }
.card .ico-wrap {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-soft); margin-bottom: 1.2rem; transition: .35s var(--ease);
}
.card:hover .ico-wrap { background: var(--grad); }
.card .ico-wrap svg { width: 26px; height: 26px; fill: var(--blue); transition: .35s; }
.card:hover .ico-wrap svg { fill: #fff; }
.card h3 { font-size: 1.2rem; font-weight: 600; }
.card p { font-size: .96rem; margin-bottom: 1.2rem; }
.card .more { font-family: 'Sora',sans-serif; font-weight: 600; font-size: .9rem; color: var(--blue); display: inline-flex; align-items: center; gap: .35rem; }
.card .more svg { width: 16px; height: 16px; transition: transform .3s; }
.card:hover .more svg { transform: translateX(4px); }

/* ---------- How it works (a real sequence -> numbered) ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; counter-reset: step; }
.step { position: relative; padding: 2.2rem 1.8rem; background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); }
.step .n {
  font-family: 'Sora',sans-serif; font-weight: 800; font-size: 2.4rem; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: .8rem; display: block;
}
.step h3 { font-size: 1.15rem; font-weight: 600; }
.step p { font-size: .95rem; margin: 0; }
.step:not(:last-child)::after {
  content: ""; position: absolute; right: -1.1rem; top: 50%; width: 1.5rem; height: 2px;
  background: var(--line);
}

/* ---------- Feature list ---------- */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem 2.5rem; }
.feature { display: flex; gap: 1rem; }
.feature .tick { flex: none; width: 40px; height: 40px; border-radius: 12px; background: rgba(20,178,107,.12); display: grid; place-items: center; }
.feature .tick svg { width: 22px; height: 22px; stroke: var(--green); }
.feature h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: .2rem; }
.feature p { font-size: .93rem; margin: 0; }

/* ---------- Testimonials ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.quote { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 2rem; }
.quote .rate { display: flex; gap: 2px; margin-bottom: 1rem; }
.quote .rate .on svg { fill: var(--amber-hot); }
.quote .rate .off svg { fill: var(--line); }
.quote .rate svg { width: 18px; height: 18px; }
.quote blockquote { margin: 0 0 1.4rem; font-size: 1.02rem; color: var(--ink-2); }
.quote .who { display: flex; align-items: center; gap: .8rem; }
.quote .who .av { width: 42px; height: 42px; border-radius: 50%; background: var(--grad); display: grid; place-items: center; color: #fff; font-family: 'Sora',sans-serif; font-weight: 700; }
.quote .who strong { display: block; font-family: 'Sora',sans-serif; font-size: .95rem; }
.quote .who span { color: var(--muted); font-size: .86rem; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; background: var(--ink); color: #fff; border-radius: var(--r-lg); padding: 3.5rem; overflow: hidden; text-align: center; }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50% 120% at 20% 0%, rgba(30,111,232,.5), transparent 60%),
              radial-gradient(50% 120% at 85% 100%, rgba(255,138,30,.42), transparent 60%);
}
.cta-band > * { position: relative; z-index: 2; }
.cta-band h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.cta-band p { color: rgba(255,255,255,.82); max-width: 52ch; margin-inline: auto; }
.cta-band .btn { margin-top: 1.5rem; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { background: var(--ink); color: #fff; padding: 4.5rem 0 3.5rem; position: relative; overflow: hidden; }
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(40% 80% at 15% 0%, rgba(30,111,232,.45), transparent 60%),
              radial-gradient(40% 80% at 90% 30%, rgba(255,138,30,.35), transparent 60%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(2.1rem, 4.4vw, 3.2rem); font-weight: 800; }
.page-hero p { color: rgba(255,255,255,.82); max-width: 60ch; font-size: 1.1rem; margin: 0; }
.crumbs { font-size: .85rem; color: rgba(255,255,255,.6); margin-bottom: 1rem; }
.crumbs a:hover { color: #fff; }

/* ---------- Service detail rows ---------- */
.svc-row { display: grid; grid-template-columns: 64px 1fr; gap: 1.5rem; padding: 2.2rem 0; border-bottom: 1px solid var(--line); }
.svc-row:last-child { border-bottom: 0; }
.svc-row .ico-wrap { width: 64px; height: 64px; border-radius: 16px; background: var(--grad-soft); display: grid; place-items: center; }
.svc-row .ico-wrap svg { width: 30px; height: 30px; fill: var(--blue); }
.svc-row h3 { font-size: 1.4rem; font-weight: 600; }
.svc-row p { margin: 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 3rem; align-items: start; }
.contact-cards { display: grid; gap: 1rem; }
.contact-card { display: flex; gap: 1rem; padding: 1.4rem; background: #fff; border: 1px solid var(--line); border-radius: var(--r); }
.contact-card .ico-wrap { width: 46px; height: 46px; flex: none; border-radius: 12px; background: var(--grad-soft); display: grid; place-items: center; }
.contact-card .ico-wrap svg { width: 22px; height: 22px; fill: var(--blue); }
.contact-card .fi { fill: var(--blue); }
.contact-card h4 { font-size: 1rem; margin-bottom: .2rem; font-weight: 600; }
.contact-card a, .contact-card p { color: var(--slate); font-size: .95rem; margin: 0; }
.contact-card a:hover { color: var(--blue); }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 2.4rem; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-family: 'Sora',sans-serif; font-weight: 600; font-size: .85rem; margin-bottom: .4rem; }
.field input, .field select, .field textarea {
  width: 100%; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: 12px;
  font: inherit; color: var(--ink); background: var(--paper); transition: .2s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue); background: #fff; box-shadow: 0 0 0 4px rgba(30,111,232,.12);
}
.form-note { font-size: .85rem; color: var(--muted); margin-top: 1rem; }
.alert { padding: 1rem 1.2rem; border-radius: 12px; margin-bottom: 1.5rem; font-size: .95rem; }
.alert-ok { background: rgba(20,178,107,.12); color: #0d7a49; border: 1px solid rgba(20,178,107,.3); }
.alert-err { background: rgba(226,74,74,.1); color: #b1372f; border: 1px solid rgba(226,74,74,.3); }
.errmsg { color: #b1372f; font-size: .82rem; margin-top: .3rem; }

.map-embed { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); margin-top: 1rem; }
.map-embed iframe { width: 100%; height: 320px; border: 0; display: block; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.75); padding: 4rem 0 2rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1.4fr; gap: 2.5rem; padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-logo { height: 34px; filter: brightness(0) invert(1); margin-bottom: 1rem; }
.footer-brand p { color: rgba(255,255,255,.6); font-size: .95rem; max-width: 42ch; }
.footer-col h4 { font-size: 1rem; color: #fff; margin-bottom: 1.1rem; }
.footer-col a, .footer-addr { display: flex; align-items: center; gap: .6rem; color: rgba(255,255,255,.72); padding: .35rem 0; font-size: .95rem; }
.footer-col a:hover { color: #fff; }
.footer-addr { align-items: flex-start; }
.fi { width: 18px; height: 18px; fill: var(--amber-hot); flex: none; margin-top: .1rem; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding-top: 1.5rem; font-size: .85rem; color: rgba(255,255,255,.5); }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }
.reveal[data-delay="5"] { transition-delay: .40s; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .split, .contact-grid { grid-template-columns: 1fr; gap: 2.2rem; }
  .cards, .steps, .quotes { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .step:not(:last-child)::after { display: none; }
}
@media (max-width: 780px) {
  .main-nav, .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: flex; }
  .section { padding: 4rem 0; }
  .cards, .steps, .quotes, .features { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-band { padding: 2.5rem 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding: 4rem 0 5rem; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}