/* TOPIx Cloud Static Site */
:root{--color-bg:#faf8f5;--color-surface:#ffffff;--color-text:#2d2a26;--color-text-muted:#6b6560;--color-text-light:#8a837d;--color-accent:#c45c26;--color-accent-hover:#a64a1c;--color-accent-light:#fdf2eb;--color-border:#e8e4df;--color-border-light:#f0ece7;--color-sidebar-bg:#f5f2ee;--color-success:#3d7a47;--color-header-bg:#ffffff;--color-footer-bg:#2d2a26;--color-footer-text:#c8c3bc;--font-body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;--shadow-sm:0 1px 3px rgba(45,42,38,0.06);--shadow-md:0 4px 12px rgba(45,42,38,0.08);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--max-width:1280px;--content-width:720px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);font-size:16px;line-height:1.7;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
.site-header{position:sticky;top:0;z-index:100;background:var(--color-header-bg);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-sm)}
.site-header .container{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--color-text);text-decoration:none;letter-spacing:-0.5px}.logo-img{height:40px;width:auto;border-radius:4px;object-fit:contain}.logo-text{display:inline}
.logo-accent{color:var(--color-accent)}
.main-nav{display:flex;gap:4px;align-items:center;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.nav-link{font-size:13.5px;font-weight:500;color:var(--color-text-muted);text-decoration:none;padding:8px 12px;border-radius:var(--radius-sm);white-space:nowrap;transition:all 0.15s ease}
.nav-link:hover,.nav-link.active{color:var(--color-accent);background:var(--color-accent-light)}
.nav-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--color-text)}
.site-main{max-width:var(--max-width);margin:0 auto;padding:40px 24px;display:grid;grid-template-columns:1fr 320px;gap:48px;align-items:start}
.content-article{max-width:var(--content-width);background:var(--color-surface);padding:48px;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.content-article h1{font-size:34px;font-weight:800;line-height:1.25;margin-bottom:24px;letter-spacing:-0.5px;color:var(--color-text)}
.content-article h2{font-size:24px;font-weight:700;line-height:1.3;margin-top:40px;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--color-accent);color:var(--color-text)}
.content-article h3{font-size:18px;font-weight:600;line-height:1.35;margin-top:28px;margin-bottom:12px;color:var(--color-text)}
.content-article h4{font-size:16px;font-weight:600;margin-top:20px;margin-bottom:8px;color:var(--color-text-muted)}
.content-article p{margin-bottom:16px;color:var(--color-text)}
.content-article a{color:var(--color-accent);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1.5px}
.content-article a:hover{color:var(--color-accent-hover)}
.content-article ul,.content-article ol{margin-bottom:16px;padding-left:28px}
.content-article li{margin-bottom:8px;color:var(--color-text)}
.content-article li>ul,.content-article li>ol{margin-top:8px;margin-bottom:0}
.content-article strong{font-weight:600;color:var(--color-text)}
.content-article hr{border:none;border-top:1px solid var(--color-border);margin:32px 0}
.content-article code{font-family:var(--font-mono);font-size:14px;background:var(--color-sidebar-bg);padding:2px 6px;border-radius:4px;color:var(--color-accent)}
.content-article pre{background:#2d2a26;color:#e8e4df;padding:20px;border-radius:var(--radius-md);overflow-x:auto;margin-bottom:20px;font-size:14px;line-height:1.6}
.content-article pre code{background:transparent;color:inherit;padding:0;font-size:inherit}
.content-article blockquote{border-left:4px solid var(--color-accent);padding-left:20px;margin:20px 0;color:var(--color-text-muted);font-style:italic}
.content-article table{width:100%;border-collapse:collapse;margin-bottom:20px;font-size:14px}
.content-article th{background:var(--color-sidebar-bg);font-weight:600;text-align:left;padding:10px 14px;border-bottom:2px solid var(--color-border)}
.content-article td{padding:10px 14px;border-bottom:1px solid var(--color-border-light)}
.content-article tr:hover{background:var(--color-bg)}
.content-sidebar{position:sticky;top:88px}
.sidebar-section{background:var(--color-surface);padding:24px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin-bottom:20px}
.sidebar-section h3{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--color-text);text-transform:uppercase;letter-spacing:0.5px}
.sidebar-section ul{list-style:none;padding:0}
.sidebar-section li{margin-bottom:8px}
.sidebar-section a{font-size:14px;color:var(--color-text-muted);text-decoration:none;transition:color 0.15s}
.sidebar-section a:hover{color:var(--color-accent)}
.sidebar-cta{background:var(--color-accent-light);border:1px solid #f0ddd0}
.sidebar-cta p{font-size:14px;margin-bottom:14px}
.btn-primary{display:inline-block;background:var(--color-accent);color:#fff!important;font-size:14px;font-weight:600;padding:10px 20px;border-radius:var(--radius-sm);text-decoration:none!important;transition:background 0.15s}
.btn-primary:hover{background:var(--color-accent-hover)}
.site-footer{background:var(--color-footer-bg);color:var(--color-footer-text);padding:56px 24px 24px;margin-top:48px}
.site-footer .container{max-width:var(--max-width);margin:0 auto}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:40px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;text-transform:uppercase;letter-spacing:0.5px}
.footer-col p{font-size:14px;line-height:1.6;color:var(--color-footer-text)}
.footer-col ul{list-style:none;padding:0}
.footer-col li{margin-bottom:8px}
.footer-col a{font-size:14px;color:var(--color-footer-text);text-decoration:none;transition:color 0.15s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #44403b;padding-top:24px;text-align:center;font-size:13px;color:var(--color-text-light)}
.footer-bottom a{color:var(--color-footer-text);text-decoration:underline}
.hero-section{background:linear-gradient(rgba(30,30,35,0.6),rgba(30,30,35,0.75)),url("images/hero-banner.jpg") center/cover no-repeat;padding:120px 24px 100px;text-align:center;color:#fff}
.hero-section .container{max-width:800px;margin:0 auto}
.hero-title{font-size:42px;font-weight:800;line-height:1.15;margin-bottom:20px;color:var(--color-text);letter-spacing:-1px}
.hero-subtitle{font-size:19px;color:var(--color-text-muted);margin-bottom:32px;line-height:1.6}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-cta .btn-primary{font-size:16px;padding:14px 28px}
.btn-secondary{display:inline-block;background:transparent;color:var(--color-accent);font-size:16px;font-weight:600;padding:14px 28px;border-radius:var(--radius-sm);border:2px solid var(--color-accent);text-decoration:none;transition:all 0.15s}
.btn-secondary:hover{background:var(--color-accent);color:#fff}
.features-section{padding:64px 24px;max-width:var(--max-width);margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--color-surface);padding:32px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--color-border-light)}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--color-text)}
.feature-card p{font-size:14px;color:var(--color-text-muted);line-height:1.6}
.pricing-section{padding:64px 24px;background:var(--color-sidebar-bg)}
.pricing-section .container{max-width:var(--max-width);margin:0 auto}
.section-title{font-size:28px;font-weight:800;text-align:center;margin-bottom:12px;color:var(--color-text)}
.section-subtitle{text-align:center;color:var(--color-text-muted);margin-bottom:40px}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pricing-card{background:var(--color-surface);padding:36px 28px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);text-align:center;border:2px solid transparent;position:relative}
.pricing-card.featured{border-color:var(--color-accent);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.pricing-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--color-accent);color:#fff;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;padding:4px 14px;border-radius:20px}
.pricing-card h3{font-size:20px;font-weight:700;margin-bottom:8px}
.pricing-card .price{font-size:36px;font-weight:800;color:var(--color-accent);margin-bottom:4px}
.pricing-card .price-period{font-size:14px;color:var(--color-text-muted);margin-bottom:20px}
.pricing-card ul{list-style:none;padding:0;margin-bottom:24px;text-align:left}
.pricing-card li{font-size:14px;padding:6px 0;color:var(--color-text-muted);border-bottom:1px solid var(--color-border-light)}
.pricing-card li::before{content:"\2713";color:var(--color-success);font-weight:700;margin-right:8px}
.content-index{padding:64px 24px;max-width:var(--max-width);margin:0 auto}
.content-index-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.content-index-card{background:var(--color-surface);padding:24px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--color-border-light);transition:box-shadow 0.2s,transform 0.2s}
.content-index-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.content-index-card h4{font-size:15px;font-weight:700;margin-bottom:8px;color:var(--color-text)}
.content-index-card p{font-size:13px;color:var(--color-text-muted);line-height:1.5;margin-bottom:12px}
.content-index-card a{font-size:13px;font-weight:600;color:var(--color-accent);text-decoration:none}
.content-index-card a:hover{text-decoration:underline}
.contact-hero{background:linear-gradient(135deg,#f5f0ea 0%,#ebe4db 100%);padding:60px 24px;text-align:center}
.contact-hero h1{font-size:36px;font-weight:800;margin-bottom:12px}
.contact-hero p{font-size:18px;color:var(--color-text-muted)}
.contact-grid{max-width:var(--max-width);margin:0 auto;padding:48px 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:var(--color-surface);padding:32px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);text-align:center}
.contact-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.contact-card p{font-size:14px;color:var(--color-text-muted);margin-bottom:16px}
@media(max-width:1024px){.site-main{grid-template-columns:1fr}.content-sidebar{position:static}.features-grid{grid-template-columns:repeat(2,1fr)}.pricing-grid{grid-template-columns:repeat(2,1fr)}.content-index-grid{grid-template-columns:repeat(2,1fr)}.contact-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.site-header .container{padding:0 16px}.main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--color-header-bg);flex-direction:column;padding:16px;border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-md);gap:4px}.main-nav.open{display:flex}.nav-toggle{display:block}.content-article{padding:24px}.hero-title{font-size:28px}.features-grid,.pricing-grid,.content-index-grid,.contact-grid,.footer-grid{grid-template-columns:1fr}.pricing-card.featured{transform:none}}
@media(max-width:480px){.hero-title{font-size:24px}.content-article h1{font-size:26px}.content-article h2{font-size:20px}}


/* ===== Gallery / Masonry Section ===== */
.gallery-section {
  padding: 64px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.gallery-section .section-title {
  margin-bottom: 8px;
}
.gallery-section .section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

/* CSS Masonry with columns */
.masonry-grid {
  column-count: 4;
  column-gap: 16px;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 16px;
  position: relative;
  cursor: pointer;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
}

.masonry-item img {
  width: 100%;
  display: block;
  transition: transform 0.4s ease, filter 0.4s ease;
  border-radius: var(--radius-md);
}

.masonry-item:hover {
  box-shadow: var(--shadow-md);
}

.masonry-item:hover img {
  transform: scale(1.06);
  filter: brightness(0.85);
}

/* Overlay on hover */
.masonry-overlay {
  position: absolute;
  inset: 0;
  background: rgba(196, 92, 38, 0.0);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: background 0.3s ease;
  pointer-events: none;
}

.masonry-item:hover .masonry-overlay {
  background: rgba(196, 92, 38, 0.25);
}

.masonry-overlay-icon {
  color: #fff;
  font-size: 28px;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.3s ease, transform 0.3s ease;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.masonry-item:hover .masonry-overlay-icon {
  opacity: 1;
  transform: scale(1);
}

/* Responsive masonry columns */
@media (max-width: 1200px) { .masonry-grid { column-count: 3; } }
@media (max-width: 768px) { .masonry-grid { column-count: 2; } }
@media (max-width: 480px) { .masonry-grid { column-count: 1; } }

/* ===== Lightbox ===== */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.lightbox.active .lightbox-img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 28px;
  color: #fff;
  font-size: 36px;
  cursor: pointer;
  line-height: 1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  transition: color 0.2s ease;
  user-select: none;
}
.lightbox-close:hover { color: var(--color-accent); }

.lightbox-caption {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 14px;
  background: rgba(0,0,0,0.5);
  padding: 6px 16px;
  border-radius: 20px;
}