/* ==========================================================================
   SUNFINA SOLAR — layout: top bar, header, mobile menu, page hero, footer,
   floating actions. Shared by every page.
   ========================================================================== */

/* ---- scroll progress ---------------------------------------------------- */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto;
  height: 3px;
  z-index: 200;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(var(--p, 0));
  background: var(--grad-flare);
}

/* ---- top bar ------------------------------------------------------------ */
.topbar {
  background: var(--panel-dark);
  color: var(--silver);
  font-size: var(--fs-xs);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 38px;
}
.topbar__tag {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.topbar__links { display: flex; align-items: center; gap: 1.4rem; }
.topbar__links a {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--silver);
  transition: color var(--t-fast);
}
.topbar__links a:hover { color: var(--solar); }
.topbar__social { display: flex; gap: .8rem; padding-left: 1.2rem; border-left: 1px solid var(--line-d); }
.topbar .ico { width: 1rem; height: 1rem; }

/* ---- header ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--hdr);
  transition: transform .45s var(--ease), background-color .3s, box-shadow .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(251, 246, 238, .86);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -22px rgba(36, 18, 6, .45);
}
.site-header.is-hidden { transform: translateY(-105%); }
body.is-menu-open .site-header { transform: none; background: var(--paper); }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 100%;
}

.brand { flex: none; display: block; line-height: 0; }
.brand img { width: auto; height: 46px; transition: transform var(--t) var(--ease); }
.brand:hover img { transform: scale(1.03); }

/* desktop nav with sliding indicator */
.nav { position: relative; margin-inline: auto; }
.nav__list { display: flex; align-items: center; gap: .15rem; }
.nav__link {
  position: relative;
  z-index: 1;
  display: block;
  padding: .55rem .85rem;
  border-radius: 999px;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: .98rem;
  color: var(--ink);
  white-space: nowrap;
  transition: color var(--t-fast);
}
.nav__link.is-active { color: var(--accent-text); font-weight: 600; }
.nav__indicator {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--w, 0);
  transform: translateX(var(--x, 0));
  border-radius: 999px;
  background: rgba(246, 162, 75, .16);
  box-shadow: inset 0 0 0 1px rgba(246, 162, 75, .35);
  opacity: var(--o, 0);
  transition: transform .45s var(--ease), width .45s var(--ease), opacity .25s;
  pointer-events: none;
}

.site-header__actions { display: flex; align-items: center; gap: .6rem; margin-left: auto; }
.nav + .site-header__actions { margin-left: 0; }

/* hamburger */
.menu-toggle {
  display: none;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--cloud);
  transition: transform var(--t-fast), background-color var(--t-fast);
}
.menu-toggle:hover { transform: scale(1.05); }
.menu-toggle__bars { position: relative; width: 18px; height: 12px; }
.menu-toggle__bars i {
  position: absolute;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .4s var(--ease), opacity .2s, width .3s var(--ease), top .4s var(--ease);
}
.menu-toggle__bars i:nth-child(1) { top: 0; width: 100%; }
.menu-toggle__bars i:nth-child(2) { top: 5px; width: 70%; }
.menu-toggle__bars i:nth-child(3) { top: 10px; width: 100%; }
.menu-toggle[aria-expanded="true"] { background: var(--solar); color: var(--ink); }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars i:nth-child(1) { top: 5px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars i:nth-child(2) { opacity: 0; width: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars i:nth-child(3) { top: 5px; transform: rotate(-45deg); }

/* ---- mobile menu -------------------------------------------------------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 99;
  padding-top: var(--hdr);
  background: var(--panel-dark);
  color: var(--cloud);
  overflow-y: auto;
  visibility: hidden;
  clip-path: circle(0 at calc(100% - 3rem) 2.4rem);
  transition: clip-path .7s var(--ease), visibility 0s linear .7s;
}
.mobile-nav.is-open {
  visibility: visible;
  clip-path: circle(150% at calc(100% - 3rem) 2.4rem);
  transition: clip-path .8s var(--ease), visibility 0s;
}
.mobile-nav__glow {
  position: absolute;
  right: -20vw;
  top: -10vh;
  width: 80vw;
  height: 80vw;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(246, 162, 75, .35), transparent);
  pointer-events: none;
}
.mobile-nav__inner {
  position: relative;
  display: grid;
  gap: 2rem;
  padding: 2rem var(--gut) 3rem;
}
.mobile-nav__list li {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .5s var(--ease), transform .6s var(--ease);
}
.mobile-nav.is-open .mobile-nav__list li {
  opacity: 1;
  transform: none;
  transition-delay: calc(.12s + var(--i) * .05s);
}
.mobile-nav__list a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: .55rem 0;
  border-bottom: 1px solid var(--line-d);
  font-family: var(--font-head);
  font-size: clamp(1.7rem, 7vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cloud);
}
.mobile-nav__list a.is-active, .mobile-nav__list a:hover { color: var(--solar); }
.mobile-nav__num { font-family: var(--font-mono); font-size: .8rem; font-weight: 400; color: var(--silver); }
.mobile-nav__contact { display: grid; gap: 1.2rem; }
.mobile-nav__quick { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; }
.mobile-nav__quick a {
  display: grid;
  justify-items: center;
  gap: .4rem;
  padding: .9rem .5rem;
  border-radius: var(--r);
  background: rgba(255, 255, 255, .06);
  color: var(--cloud);
  font-size: var(--fs-sm);
  font-weight: 500;
}
.mobile-nav__quick .ico { width: 1.4rem; height: 1.4rem; color: var(--solar); }
.mobile-nav address { color: var(--silver); font-size: var(--fs-sm); }

@media (max-width: 1180px) {
  .nav { display: none; }
  .menu-toggle { display: grid; }
}
@media (max-width: 900px) {
  .topbar { display: none; }
  .hide-sm { display: none !important; }
}
@media (max-width: 520px) {
  :root { --hdr: 68px; }
  .brand img { height: 38px; }
  .hide-xs { display: none !important; }
}

/* ---- inner-page hero ---------------------------------------------------- */
.page-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(2.5rem, 2rem + 4vw, 5.5rem) 0 calc(var(--r-xl) + clamp(3rem, 2rem + 4vw, 5.5rem));
}
.page-hero__bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.page-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(60, 30, 10, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(60, 30, 10, .06) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 70% 30%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 80% at 70% 30%, #000 20%, transparent 75%);
}
.page-hero__glow {
  position: absolute;
  left: 0;
  top: 0;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(246, 162, 75, .32), rgba(246, 162, 75, 0));
  transform: translate3d(calc(var(--fx, 72vw) - 50%), calc(var(--fy, 140px) - 50%), 0);
  transition: transform 1.2s var(--ease);
}
.page-hero__sun {
  position: absolute;
  right: -90px;
  top: -70px;
  width: clamp(240px, 32vw, 460px);
  opacity: .12;
}
.page-hero__inner { position: relative; }
.page-hero--split .page-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .9fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
}
.page-hero__copy { max-width: 60rem; }
.page-hero__title {
  font-size: var(--fs-h1);
  max-width: 20ch;
  margin-bottom: .45em;
}
.page-hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.8rem; }
@media (max-width: 900px) {
  .page-hero--split .page-hero__inner { grid-template-columns: minmax(0, 1fr); }
}

.crumbs { margin-bottom: 1.5rem; }
.crumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem; font-size: var(--fs-sm); }
.crumbs li { display: inline-flex; align-items: center; gap: .3rem; color: var(--ink-3); }
.crumbs li + li::before { content: "/"; color: var(--line-2); margin-right: .1rem; }
.crumbs a { color: var(--ink-2); font-weight: 500; }
.crumbs a:hover { color: var(--accent-text); }
.crumbs [aria-current] { color: var(--ink); font-weight: 600; }

/* ---- footer ------------------------------------------------------------- */
.site-footer {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--panel-dark);
  color: var(--silver);
  padding-top: clamp(3rem, 6vw, 5rem);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line-d) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-d) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 40%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 40%, transparent);
  opacity: .5;
}
.site-footer a { color: var(--cloud); transition: color var(--t-fast); }
.site-footer a:hover { color: var(--solar); }

.footer-cta {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2rem;
  padding: clamp(2rem, 4vw, 3.5rem) clamp(1.5rem, 4vw, 3.5rem);
  border-radius: var(--r-lg);
  background: var(--grad-sun);
  color: var(--ink);
  box-shadow: 0 30px 80px -30px rgba(232, 112, 58, .55);
}
.footer-cta__sun {
  position: absolute;
  right: -60px;
  top: 50%;
  z-index: -1;
  width: 300px;
  transform: translateY(-50%);
  opacity: .25;
  mix-blend-mode: soft-light;
}
.footer-cta__title {
  margin: 0;
  max-width: 24ch;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 1.1rem + 2vw, 2.6rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--ink);
}
.footer-cta__actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.site-footer .footer-cta a.btn--dark { color: var(--cloud); }
.site-footer .footer-cta a.btn--whatsapp { color: var(--wa-ink); }
@media (max-width: 860px) {
  .footer-cta { grid-template-columns: minmax(0, 1fr); }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.1fr 1.4fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-block: clamp(3rem, 6vw, 5rem) 2rem;
}
.footer-grid--flush { padding-top: 0; }
.footer-brand__logo img { width: 190px; height: auto; margin-bottom: 1.2rem; }
.footer-brand p { max-width: 36ch; font-size: var(--fs-sm); }
.footer-col__title {
  margin-bottom: 1.1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--solar);
}
.footer-col ul { display: grid; gap: .6rem; font-size: var(--fs-sm); }
.footer-col a { position: relative; }
.footer-col a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .4s var(--ease);
}
.footer-col a:hover::after { transform: scaleX(1); transform-origin: left; }
.footer-col__more { display: inline-flex; align-items: center; gap: .35rem; font-weight: 600; }
.footer-contact li { display: grid; grid-template-columns: 1.2rem 1fr; gap: .7rem; align-items: start; }
.footer-contact .ico { margin-top: .2rem; color: var(--solar); }
.footer-contact address { color: var(--silver); }
@media (max-width: 980px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
}

.social { display: flex; gap: .55rem; margin-top: 1.2rem; }
.social a {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .07);
  color: var(--cloud);
  transition: background-color var(--t-fast), color var(--t-fast), transform var(--t-fast);
}
.social a:hover { background: var(--solar); color: var(--ink); transform: translateY(-3px); }
.social .ico { width: 1.05rem; height: 1.05rem; }
.social--light a { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-sm); }

.footer-wordmark {
  overflow: hidden;
  line-height: .78;
  text-align: center;
  user-select: none;
  pointer-events: none;
}
.footer-wordmark span {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(4.5rem, 21vw, 19rem);
  letter-spacing: -.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 220, 190, .14);
  background: linear-gradient(180deg, rgba(246, 162, 75, .18), transparent 70%);
  -webkit-background-clip: text;
  background-clip: text;
  transform: translateY(8%);
}

.footer-bottom { border-top: 1px solid var(--line-d); font-size: var(--fs-xs); }
.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem 1.5rem;
  padding-block: 1.3rem 1.5rem;
}
.footer-bottom p { margin: 0; }
.footer-bottom__made { display: inline-flex; align-items: center; gap: .4rem; }
.footer-bottom__made .ico { color: var(--solar); }

/* ---- floating actions (WhatsApp + back to top) ------------------------- */
.fabs {
  position: fixed;
  right: clamp(1rem, 2.5vw, 1.75rem);
  bottom: clamp(1rem, 2.5vw, 1.75rem);
  z-index: 120;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: .75rem;
}
.fab {
  position: relative;
  display: grid;
  place-items: center;
  border-radius: 999px;
  transition: transform .35s var(--ease), opacity .3s, box-shadow .3s;
}
.fab--whatsapp {
  width: 60px;
  height: 60px;
  grid-auto-flow: column;
  background: var(--wa);
  color: #fff;
  box-shadow: 0 14px 30px -10px rgba(37, 211, 102, .7);
}
.fab--whatsapp > .ico { width: 30px; height: 30px; }
.fab--whatsapp:hover { transform: scale(1.06); }
.fab__label {
  position: absolute;
  right: calc(100% + .7rem);
  top: 50%;
  padding: .5rem .9rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--cloud);
  font-size: var(--fs-sm);
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  transform: translate(10px, -50%);
  transition: opacity .3s, transform .4s var(--ease);
  pointer-events: none;
}
.fab--whatsapp:hover .fab__label,
.fab--whatsapp:focus-visible .fab__label { opacity: 1; transform: translate(0, -50%); }
.fab__pulse {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid var(--wa);
  animation: fabPulse 2.4s ease-out infinite;
}
@keyframes fabPulse {
  0%   { transform: scale(1); opacity: .8; }
  100% { transform: scale(1.7); opacity: 0; }
}

.fab--top {
  width: 48px;
  height: 48px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(16px) scale(.8);
  pointer-events: none;
}
.fab--top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.fab--top:hover { background: var(--ink); color: var(--cloud); }
.fab--top > .ico { position: relative; z-index: 1; }
.fab__ring { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.fab__ring circle { fill: none; stroke-width: 2.5; }
.fab__ring circle:first-child { stroke: var(--line); }
.fab__ring-fill {
  stroke: var(--solar);
  stroke-linecap: round;
  stroke-dasharray: 138.2;
  stroke-dashoffset: calc(138.2 * (1 - var(--p, 0)));
}

.wa-bubble {
  position: relative;
  width: min(290px, calc(100vw - 2rem));
  padding: 1.1rem 1.2rem 1rem;
  border-radius: var(--r) var(--r) 6px var(--r);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm);
  animation: bubbleIn .6s var(--ease) both;
}
.wa-bubble p { margin: 0 1.2rem .7rem 0; color: var(--ink-2); }
.wa-bubble strong { display: block; color: var(--ink); font-family: var(--font-head); font-size: 1.05rem; }
.wa-bubble a { display: inline-flex; align-items: center; gap: .35rem; font-weight: 700; color: #128C4A; }
.wa-bubble__close {
  position: absolute;
  top: .55rem;
  right: .55rem;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--ink-3);
}
.wa-bubble__close:hover { background: var(--paper-2); color: var(--ink); }
@keyframes bubbleIn {
  from { opacity: 0; transform: translateY(14px) scale(.95); }
}

/* ---- toast ---------------------------------------------------------------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  z-index: 250;
  padding: .75rem 1.2rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--cloud);
  font-size: var(--fs-sm);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translate(-50%, 20px);
  transition: opacity .3s, transform .4s var(--ease);
  pointer-events: none;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }
.toast:empty { display: none; }

/* the open mobile menu has its own WhatsApp / call buttons */
body.is-menu-open .fabs { opacity: 0; visibility: hidden; transition: opacity .2s, visibility 0s .2s; }