/* ==========================================================================
   SUNFINA SOLAR — page-specific sections
   ========================================================================== */

/* ==== HOME · hero ========================================================= */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(2rem, 1rem + 4vw, 4.5rem) 0 clamp(3rem, 5vw, 5rem);
}
.hero__bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(60, 30, 10, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(60, 30, 10, .07) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 72% 40%, #000 25%, transparent 75%);
  mask-image: radial-gradient(ellipse 60% 70% at 72% 40%, #000 25%, transparent 75%);
}
.hero__orb { position: absolute; border-radius: 50%; }
.hero__orb--1 {
  left: 0;
  top: 0;
  width: 720px;
  height: 720px;
  background: radial-gradient(closest-side, rgba(246, 162, 75, .38), rgba(246, 162, 75, 0));
  transform: translate3d(calc(var(--fx, 70vw) - 50%), calc(var(--fy, 320px) - 50%), 0);
  transition: transform 1.4s var(--ease);
}
.hero__orb--2 {
  left: -180px;
  bottom: -220px;
  width: 520px;
  height: 520px;
  background: radial-gradient(closest-side, rgba(211, 58, 78, .14), transparent);
}
.hero__sun { position: absolute; right: -120px; top: -140px; width: clamp(300px, 38vw, 560px); opacity: .13; }

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
}
.hero__eyebrow { color: var(--ink); }
.hero__eyebrow::before { display: none; }
.hero__title {
  font-size: var(--fs-display);
  font-weight: 800;
  line-height: .98;
  letter-spacing: -.04em;
  margin-bottom: .35em;
}
.hero__accent .w > span {
  background: var(--grad-text);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: textShine 7s linear infinite;
}
.hero__lead { font-size: clamp(1.1rem, 1rem + .5vw, 1.35rem); max-width: 40ch; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.hero__trust { display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; margin-top: 2rem; font-size: var(--fs-sm); font-weight: 500; color: var(--ink); }
.hero__trust li { display: inline-flex; align-items: center; gap: .4rem; }
.hero__trust .ico { color: var(--solar-2); stroke-width: 2.6; }
.hero__stats { position: relative; margin-top: clamp(2rem, 4vw, 3.5rem); }
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: minmax(0, 1fr); }
  .hero__visual { max-width: 620px; margin-inline: auto; width: 100%; }
}

/* ---- exploded module ----------------------------------------------------- */
.mstack { position: relative; }
.mstack__stage { position: relative; perspective: 1200px; }
.mstack__svg { width: 100%; height: auto; overflow: visible; }
.ml {
  --gap: 5px;
  transform: translateY(calc((var(--i) - 3) * var(--gap)));
  transition: transform 1.1s var(--ease), opacity .4s, filter .4s;
  cursor: pointer;
}
.mstack.is-exploded .ml { --gap: 40px; }
.ml:nth-child(n) { transition-delay: calc((6 - var(--i)) * 40ms); }
.mstack.is-focusing .ml { opacity: .35; }
.mstack.is-focusing .ml.is-focus { opacity: 1; filter: drop-shadow(0 10px 18px rgba(232, 112, 58, .45)); }
.ml__label { opacity: 0; transition: opacity .4s; pointer-events: none; }
.mstack.is-exploded .ml__label { opacity: 1; transition-delay: .6s; }
.ml__label line { stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 3 3; }
.ml__label circle { fill: var(--solar-2); }
.ml__label text { font-family: var(--font-head); font-size: 15px; font-weight: 600; fill: var(--ink); }
.ml.is-focus .ml__label text { fill: var(--accent-text); }
.mstack__shadow { transition: transform 1.1s var(--ease), opacity 1.1s; transform-origin: 310px 440px; }
.mstack.is-exploded .mstack__shadow { transform: scale(.8); opacity: .6; }
.mstack__sweep { animation: msSweep 4.5s var(--ease-in-out) infinite; }
@keyframes msSweep {
  0%, 40% { transform: translateX(-160px); }
  100%    { transform: translateX(560px); }
}

.float-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .55rem .9rem;
  border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--shadow-md);
  font-family: var(--font-head);
  font-size: .9rem;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
  animation: floaty 6s ease-in-out infinite;
}
.float-chip .ico { color: var(--solar-2); }
.float-chip--a { left: 2%; top: 6%; }
.float-chip--b { right: 0; top: 40%; animation-delay: -2s; background: var(--ink); color: var(--cloud); }
.float-chip--b .ico { color: var(--solar); }
.float-chip--c { left: 8%; bottom: 4%; animation-delay: -4s; }
@media (max-width: 560px) { .float-chip { font-size: .78rem; padding: .4rem .7rem; } }

.mstack__ui { display: grid; justify-items: center; gap: .9rem; margin-top: .4rem; text-align: center; }
.mstack__toggle {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem 1.1rem .55rem .55rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--cloud);
  font-family: var(--font-head);
  font-weight: 600;
  transition: transform .3s var(--ease), box-shadow .3s;
}
.mstack__toggle:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.mstack__toggle-ico { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--grad-sun); color: var(--ink); }
.mstack__chips { display: flex; flex-wrap: wrap; justify-content: center; gap: .35rem; }
.mstack__chips button {
  padding: .35rem .75rem;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, .7);
  font-size: .8rem;
  font-weight: 500;
  color: var(--ink-2);
  transition: all .25s;
}
.mstack__chips button:hover, .mstack__chips button.is-on { background: var(--ink); border-color: var(--ink); color: var(--cloud); }
.mstack__caption { min-height: 3em; max-width: 44ch; margin: 0; font-size: var(--fs-sm); color: var(--ink-2); }

/* ==== HOME · sections ======================================================= */
.factory-teaser { padding-bottom: clamp(3rem, 5vw, 5rem); }
.factory-teaser .sec-head--row .btn { margin-top: .2rem; }
.about-teaser .media-frame { aspect-ratio: 5 / 4; }

.partner-sec__grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.partner-sec__copy { position: sticky; top: calc(var(--hdr) + 2rem); }
@media (max-width: 980px) {
  .partner-sec__grid { grid-template-columns: minmax(0, 1fr); }
  .partner-sec__copy { position: static; }
}
.partner-apply .contact-lines { margin-top: 2rem; }
.partner-apply .form-card { box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .6); }

/* ==== PRODUCT DETAIL ========================================================== */
.pd {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(2rem, 4vw, 3.5rem) 0 calc(var(--r-xl) + clamp(3rem, 5vw, 5rem));
}
.pd .page-hero__bg { z-index: -1; }
.pd__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.pd__visual { position: sticky; top: calc(var(--hdr) + 1.5rem); }
.pd__frame {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  padding: 2.5rem;
  border-radius: var(--r-xl);
  background:
    radial-gradient(circle at 75% 20%, rgba(246, 162, 75, .45), transparent 55%),
    linear-gradient(150deg, var(--paper-2), var(--paper-3));
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.pd__frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pd__frame .pv-art { filter: drop-shadow(0 30px 30px rgba(36, 18, 6, .35)); transform: rotate(-4deg); }
.pd__badges { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.pd__badges li {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .9rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--ink);
}
.pd__badges .ico { color: var(--solar-2); }
.pd__info .chip { margin-bottom: 1rem; }
.pd__title { font-size: var(--fs-h1); }
.spec-table { display: grid; margin: 1.8rem 0; border-radius: var(--r); border: 1px solid var(--line); background: var(--surface); overflow: hidden; }
.spec-table div { display: grid; grid-template-columns: 40% 1fr; gap: 1rem; padding: .85rem 1.2rem; }
.spec-table div:nth-child(odd) { background: var(--paper); }
.spec-table dt { color: var(--ink-3); font-size: var(--fs-sm); }
.spec-table dd { margin: 0; font-weight: 600; color: var(--ink); }
.pd__actions { display: flex; flex-wrap: wrap; align-items: center; gap: .7rem; }
.pd__actions .icon-btn { width: 58px; height: 58px; }
.pd__overview { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(2rem, 5vw, 5rem); }
@media (max-width: 900px) {
  .pd__grid, .pd__overview { grid-template-columns: minmax(0, 1fr); }
  .pd__visual { position: static; }
}

/* ==== CONTACT ================================================================== */
.contact__grid {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}
.contact__info { display: grid; gap: .8rem; position: sticky; top: calc(var(--hdr) + 1.5rem); }
.c-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  border-radius: var(--r);
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-2);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s;
}
.c-card:hover { transform: translateX(4px); box-shadow: var(--shadow-md); border-color: rgba(246, 162, 75, .5); }
.c-card__icon {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--ink);
  color: var(--solar);
}
.c-card--wa .c-card__icon { background: var(--wa); color: #fff; }
.c-card__icon .ico { width: 1.4rem; height: 1.4rem; }
.c-card__body { display: grid; gap: .1rem; min-width: 0; }
.c-card__label { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.c-card__value { font-family: var(--font-head); font-size: 1.1rem; font-weight: 700; color: var(--ink); overflow-wrap: anywhere; }
.c-card__value--sm { font-family: var(--font-body); font-size: .92rem; font-weight: 500; line-height: 1.45; }
.c-card__link::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.c-card__copy, .c-card__go {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  transition: all .25s;
}
.c-card__copy:hover { background: var(--ink); color: var(--cloud); border-color: var(--ink); }
.c-card__copy.is-copied { background: #12B76A; border-color: #12B76A; color: #fff; }
.c-card__go { border: 0; }
.contact__social { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .4rem .3rem; font-size: var(--fs-sm); font-weight: 600; color: var(--ink); }
.contact__social .social { margin: 0; }
.partner-nudge {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: 1rem 1.2rem;
  border-radius: var(--r);
  background: var(--grad-sun);
  color: var(--ink);
  font-size: var(--fs-sm);
  transition: transform .4s var(--ease);
}
.partner-nudge:hover { transform: translateX(4px); }
.partner-nudge strong { display: block; font-family: var(--font-head); font-size: 1rem; }
.partner-nudge span { flex: 1; }
.contact__form-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem; margin-bottom: 1rem; }
.contact__form-head h2 { margin: 0; font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem); }
@media (max-width: 960px) {
  .contact__grid { grid-template-columns: minmax(0, 1fr); }
  .contact__info { position: static; }
}

/* ==== 404 ======================================================================= */
.nf { position: relative; isolation: isolate; overflow: hidden; padding: clamp(3rem, 8vw, 6rem) 0 clamp(4rem, 8vw, 7rem); text-align: center; }
.nf .page-hero__bg { position: absolute; inset: 0; z-index: -1; }
.nf__inner { max-width: 44rem; }
.nf__inner .eyebrow { justify-content: center; }
.nf__inner .lead { margin-inline: auto; }
.nf__code {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .1em;
  margin: 0 0 1rem;
  font-family: var(--font-head);
  font-size: clamp(6rem, 4rem + 12vw, 13rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--ink);
}
.nf__sun { display: inline-block; width: .95em; transform: rotate(var(--r, 0deg)); transition: transform .6s var(--ease); }
.nf__ctas { display: flex; flex-wrap: wrap; justify-content: center; gap: .7rem; margin-top: 2rem; }