/* ============================================================
   LD Lighting — Stage Lighting Factory Website
   Theme: stage-light beams — violet → magenta gradient + cyan glow
   ============================================================ */
:root {
  --brand: #7c3aed;        /* stage violet */
  --brand-2: #ec4899;      /* magenta */
  --accent: #06b6d4;       /* cyan glow */
  --ink: #14101f;
  --ink-2: #2b2440;
  --muted: #6b6480;
  --line: #e9e4f2;
  --bg: #ffffff;
  --bg-soft: #f8f5fd;
  --bg-card: #ffffff;
  --shadow: 0 10px 30px rgba(124,58,237,.12);
  --radius: 14px;
  --max: 1280px;
  --grad: linear-gradient(135deg, #7c3aed 0%, #a855f7 45%, #ec4899 100%);
  --grad-soft: linear-gradient(135deg, rgba(124,58,237,.08), rgba(236,72,153,.08));
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: "Inter", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- HEADER ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-bar { display: flex; align-items: center; gap: 24px; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.brand-logo {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--grad); color: #fff;
  display: grid; place-items: center; font-size: 22px; font-weight: 800; letter-spacing: -1px;
  box-shadow: 0 4px 14px rgba(124,58,237,.35);
}
.brand-name { font-size: 18px; color: var(--ink); }
.brand-sub { font-size: 10.5px; color: var(--muted); margin-top: 2px; letter-spacing: 1.4px; font-weight: 600; }

.nav { margin-left: auto; display: flex; gap: 6px; }
.nav a {
  padding: 10px 14px; border-radius: 8px;
  color: var(--ink-2); font-weight: 500; font-size: 14.5px; transition: all .15s;
}
.nav a:hover { background: var(--bg-soft); color: var(--brand); }
.nav a.active { background: var(--grad); color: #fff; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; }

.header-cta {
  padding: 10px 18px; border-radius: 8px; font-weight: 700; font-size: 14px;
  background: var(--grad); color: #fff; box-shadow: 0 4px 14px rgba(168,85,247,.35);
  transition: transform .15s;
}
.header-cta:hover { transform: translateY(-1px); }

/* ---------- HERO — stage with light beams ---------- */
.hero { position: relative; min-height: 80vh; display: flex; align-items: center; color: #fff; overflow: hidden; background: #0d0916; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(124,58,237,.55), transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(236,72,153,.40), transparent 55%),
    radial-gradient(ellipse at 50% 100%, rgba(6,182,212,.30), transparent 60%),
    linear-gradient(180deg,#0d0916 0%,#1a1030 60%,#0d0916 100%);
}
/* stage light beams */
.beam {
  position: absolute; top: -140px; width: 340px; height: 900px;
  background: linear-gradient(180deg, rgba(255,255,255,.30), rgba(168,85,247,.16) 35%, transparent 80%);
  clip-path: polygon(46% 0, 54% 0, 100% 100%, 0 100%);
  filter: blur(6px); z-index: 0;
  transform-origin: top center;
  animation: beamSwing 9s ease-in-out infinite alternate;
}
.beam.b1 { left: 8%;  transform: rotate(-16deg); animation-delay: 0s; }
.beam.b2 { left: 34%; transform: rotate(-4deg);  background: linear-gradient(180deg, rgba(255,255,255,.22), rgba(236,72,153,.20) 35%, transparent 80%); animation-delay: 1.2s; }
.beam.b3 { left: 58%; transform: rotate(7deg);  background: linear-gradient(180deg, rgba(255,255,255,.26), rgba(6,182,212,.18) 35%, transparent 80%);  animation-delay: 2.4s; }
.beam.b4 { left: 82%; transform: rotate(18deg); background: linear-gradient(180deg, rgba(255,255,255,.18), rgba(124,58,237,.20) 35%, transparent 80%); animation-delay: 3.1s; }
@keyframes beamSwing {
  from { opacity: .55; filter: blur(6px); }
  to   { opacity: .95; filter: blur(3px); }
}
.hero-grid { position: absolute; inset: 0; opacity: .10; z-index: 0; background:
  linear-gradient(transparent 95%, rgba(255,255,255,.35) 95%),
  linear-gradient(90deg, transparent 95%, rgba(255,255,255,.35) 95%);
  background-size: 44px 44px; }
.hero-content { position: relative; z-index: 2; display: grid; grid-template-columns: 1.25fr 1fr; gap: 60px; align-items: center; padding: 90px 0; }
.hero h1 { font-size: 54px; line-height: 1.08; margin: 16px 0 18px; font-weight: 800; letter-spacing: -.02em; }
.hero h1 .grad-text {
  background: linear-gradient(90deg, #c4b5fd, #f0abfc, #67e8f9);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: 17.5px; color: #d8d2e8; max-width: 580px; }
.hero .badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 15px; border-radius: 999px;
  background: rgba(168,85,247,.16); border: 1px solid rgba(196,181,253,.35);
  color: #e9d5ff; font-size: 13px; font-weight: 600;
}
.hero .ctas { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn { padding: 13px 24px; border-radius: 10px; font-weight: 600; font-size: 14.5px; transition: all .15s; border: 1px solid transparent; display: inline-flex; align-items: center; gap: 8px; }
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 6px 22px rgba(168,85,247,.45);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 9px 28px rgba(236,72,153,.5); }
.btn-outline { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.3); }
.btn-outline:hover { background: rgba(255,255,255,.16); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; }

/* hero showcase */
.hero-showcase { position: relative; z-index: 2; }
.hs-big {
  background: rgba(255,255,255,.05); border: 1px solid rgba(196,181,253,.25);
  border-radius: var(--radius); padding: 26px; text-align: center; backdrop-filter: blur(8px);
}
.hs-big .num { font-size: 62px; font-weight: 800; line-height: 1;
  background: linear-gradient(90deg,#c4b5fd,#f0abfc);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.hs-big .lbl { color: #d8d2e8; margin-top: 8px; font-size: 14px; }
.hs-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.hs-card { background: rgba(255,255,255,.05); border: 1px solid rgba(196,181,253,.22); border-radius: var(--radius); padding: 18px; }
.hs-card .hsc-count { font-size: 34px; font-weight: 800; color: #e9d5ff; }
.hs-card .hsc-label { font-size: 12.5px; color: #b8aed4; margin-top: 4px; }

/* ---------- SECTION ---------- */
.section { padding: 84px 0; }
.section.alt { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.eyebrow {
  display: inline-block; font-size: 12.5px; font-weight: 800; letter-spacing: 3px;
  text-transform: uppercase; margin-bottom: 14px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-head h2 { font-size: 38px; margin: 0 0 12px; font-weight: 800; letter-spacing: -.02em; }
.section-head p { color: var(--muted); font-size: 16px; margin: 0; }

/* ---------- FILTER BAR ---------- */
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.filter-bar button {
  padding: 9px 17px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line); color: var(--ink-2); font-weight: 500; font-size: 14px;
  transition: all .15s;
}
.filter-bar button:hover { border-color: var(--brand); color: var(--brand); }
.filter-bar button.on { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 4px 14px rgba(168,85,247,.3); }

/* ---------- PRODUCT GRID ----------
   Card order: name → model → image → key specs      ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 26px; }
.product-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .2s; cursor: pointer;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--brand-2); }
.pc-head { padding: 18px 20px 14px; }
.pc-name { font-size: 19px; font-weight: 800; line-height: 1.25; color: var(--ink); }
.pc-model {
  display: inline-block; margin-top: 8px; padding: 4px 12px; border-radius: 6px;
  background: var(--grad-soft); color: var(--brand); border: 1px solid rgba(124,58,237,.25);
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13.5px; font-weight: 700;
}
.pc-image {
  aspect-ratio: 1.15/1; background: linear-gradient(180deg,#faf8ff 0%,#f0eaf9 100%);
  display: grid; place-items: center; padding: 16px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.pc-image img { max-height: 100%; width: auto; object-fit: contain; }
.pc-specs { padding: 16px 20px 20px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.pc-specs span { font-size: 13px; color: var(--ink-2); line-height: 1.45; }
.pc-specs span::first-letter { color: var(--brand-2); font-weight: 700; }

/* ---------- PRODUCT ROW (catalog page) ---------- */
.product-rows { display: flex; flex-direction: column; gap: 34px; }
.product-row {
  display: grid; grid-template-columns: 340px 1fr; gap: 0;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: all .2s;
}
.product-row:hover { box-shadow: var(--shadow); border-color: rgba(124,58,237,.4); }
.pr-info { padding: 26px 28px 22px; border-bottom: 1px solid var(--line); display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.pr-name { font-size: 24px; font-weight: 800; line-height: 1.2; }
.pr-model {
  display: inline-block; margin-top: 10px; padding: 5px 14px; border-radius: 7px;
  background: var(--grad-soft); color: var(--brand); border: 1px solid rgba(124,58,237,.25);
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 14.5px; font-weight: 700;
}
.pr-cat { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--brand-2); font-weight: 700; }
.pr-body { display: grid; grid-template-columns: 1fr 1fr; }
.pr-img {
  background: linear-gradient(180deg,#faf8ff 0%,#f0eaf9 100%);
  display: grid; place-items: center; padding: 22px; min-height: 280px;
}
.pr-img img { max-height: 260px; width: auto; object-fit: contain; }
.pr-specs { padding: 26px 30px; display: flex; flex-direction: column; gap: 10px; justify-content: center; }
.pr-specs h4 { margin: 0 0 6px; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }
.pr-specs li { font-size: 14.5px; color: var(--ink-2); line-height: 1.5; }
.pr-specs ul { margin: 0; padding: 0; list-style: none; }
.pr-specs li::before { content: "▸ "; color: var(--brand-2); font-weight: 700; }
.pr-more { margin-top: 10px; font-size: 13.5px; font-weight: 700; color: var(--brand); }

/* ---------- FACTORY ---------- */
.factory-hero {
  padding: 90px 0; color: #fff; position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse at 15% 0%, rgba(124,58,237,.4), transparent 55%),
    radial-gradient(ellipse at 90% 90%, rgba(236,72,153,.28), transparent 55%),
    #0d0916;
}
.factory-hero h2 { color: #fff; }
.factory-hero p { color: #d8d2e8; }
.factory-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.factory-stats { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.fs-card { background: rgba(255,255,255,.06); border: 1px solid rgba(196,181,253,.22); border-radius: var(--radius); padding: 24px 20px; }
.fs-card .num { font-size: 34px; font-weight: 800;
  background: linear-gradient(90deg,#c4b5fd,#f0abfc); -webkit-background-clip: text; background-clip: text; color: transparent; }
.fs-card .lbl { color: #b8aed4; font-size: 13px; margin-top: 4px; }

.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
.gallery-item {
  border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3; background: #0d0916; position: relative;
  border: 1px solid var(--line);
}
.gallery-item img, .gallery-item svg { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.gallery-item:hover img, .gallery-item:hover svg { transform: scale(1.04); }
.gallery-cap { position: absolute; bottom: 0; left: 0; right: 0; padding: 12px 14px; background: linear-gradient(transparent, rgba(13,9,22,.85)); color: #fff; font-size: 13px; font-weight: 500; }

/* ---------- CASE STUDIES ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.case-card { background: #fff; border-radius: var(--radius); padding: 24px; border: 1px solid var(--line); transition: all .15s; }
.case-card:hover { box-shadow: var(--shadow); }
.case-flag { font-size: 24px; }
.case-title { font-size: 17px; font-weight: 700; margin: 8px 0 4px; }
.case-meta { color: var(--muted); font-size: 13px; }
.case-items { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); font-size: 13px; color: var(--ink-2); }
.case-items span { display: block; padding: 3px 0; }

/* ---------- PRODUCT DETAIL ---------- */
.breadcrumb { font-size: 13px; color: var(--muted); padding: 24px 0; }
.breadcrumb a:hover { color: var(--brand); }
.pdp { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; padding-bottom: 80px; }
.pdp-left { display: flex; flex-direction: column; gap: 0; }
.pdp-img {
  background: linear-gradient(180deg,#faf8ff 0%,#f0eaf9 100%); border-radius: var(--radius);
  padding: 30px; aspect-ratio: 1; display: grid; place-items: center; border: 1px solid var(--line);
}
.pdp-img img { max-width: 100%; max-height: 100%; }
.pdp h1 { font-size: 34px; margin: 0 0 10px; font-weight: 800; }
.pdp .model-tag {
  display: inline-block; padding: 7px 16px; border-radius: 8px; align-self: flex-start;
  background: var(--grad-soft); color: var(--brand); border: 1px solid rgba(124,58,237,.3);
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 15px; font-weight: 700;
}
.pdp-specs { margin-top: 22px; }
.pdp-specs h3 { font-size: 13px; letter-spacing: 2.5px; text-transform: uppercase; color: var(--muted); margin: 0 0 12px; }
.spec-list { list-style: none; margin: 0; padding: 0; }
.spec-list li {
  padding: 11px 14px; border-bottom: 1px solid var(--line); font-size: 15px; color: var(--ink-2);
  display: flex; gap: 10px; line-height: 1.5;
}
.spec-list li::before { content: "▸"; color: var(--brand-2); font-weight: 800; }
.pdp-cta { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }

.related-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }

/* ---------- CONTACT ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px;
}
.contact-card h3 { margin: 0 0 18px; font-size: 18px; display: flex; align-items: center; gap: 10px; }
.contact-card h3 .ic {
  width: 34px; height: 34px; border-radius: 9px; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 15px;
}
.contact-row { padding: 13px 0; border-bottom: 1px dashed var(--line); display: flex; gap: 14px; font-size: 14.5px; }
.contact-row:last-child { border-bottom: none; }
.contact-row strong { color: var(--muted); font-weight: 600; min-width: 120px; }
.contact-row a { color: var(--brand); font-weight: 600; }
.contact-row a:hover { color: var(--brand-2); }

.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: #fff; color: var(--ink);
}
.form-row textarea { min-height: 110px; resize: vertical; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: 2px solid var(--brand); outline-offset: 0; border-color: var(--brand); }
.form-two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.inquiry-success { background: #ecf8ee; color: #1d6f3a; padding: 12px 14px; border-radius: 8px; font-size: 14px; display: none; margin-bottom: 12px; }
.inquiry-success.on { display: block; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: #0d0916; color: #cdc6de; padding: 64px 0 28px; position: relative;
}
.site-footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #7c3aed, #ec4899, #06b6d4, #7c3aed);
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-grid h4 { color: #fff; margin: 0 0 14px; font-size: 15px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { padding: 5px 0; font-size: 13.5px; }
.footer-grid a:hover { color: #e9d5ff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 18px; margin-top: 36px; font-size: 13px; color: #7d7594; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- TRUST STRIP ---------- */
.trust-strip { background: #0d0916; color: #b8aed4; padding: 24px 0; border-top: 1px solid rgba(196,181,253,.15); }
.trust-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; text-align: center; font-size: 13px; }
.trust-row b {
  color: #fff; font-size: 17px; display: block; margin-bottom: 4px;
  background: linear-gradient(90deg,#c4b5fd,#f0abfc); -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1100px) {
  .product-grid { grid-template-columns: repeat(2,1fr); }
  .related-grid { grid-template-columns: repeat(3,1fr); }
  .case-grid { grid-template-columns: repeat(2,1fr); }
  .trust-row { grid-template-columns: repeat(3,1fr); }
  .hero h1 { font-size: 44px; }
  .product-row { grid-template-columns: 300px 1fr; }
  .pr-img img { max-height: 220px; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--line); z-index: 40; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 8px; }
  .header-cta { display: none; }
  .hero-content { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 36px; }
  .product-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: repeat(2,1fr); }
  .factory-grid, .pdp, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .factory-stats { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .gallery { grid-template-columns: repeat(2,1fr); }
  .section-head h2 { font-size: 28px; }
  .form-two { grid-template-columns: 1fr; }
  .product-row { grid-template-columns: 1fr; }
  .pr-body { grid-template-columns: 1fr; }
  .beam { display: none; }
}
@media (max-width: 480px) {
  .related-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .trust-row { grid-template-columns: repeat(2,1fr); }
  .hero h1 { font-size: 28px; }
  .section { padding: 56px 0; }
}