/* =============================================
   Waste Granule Systems Co., Ltd.
   Main Stylesheet — style.css
   ============================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-bg:       #f2f3f4;
  --clr-white:    #ffffff;
  --clr-dark:     #1c2b39;
  --clr-mid:      #2e4057;
  --clr-accent:   #3d7a56;
  --clr-accent2:  #e07b39;
  --clr-text:     #2d2d2d;
  --clr-muted:    #6b7280;
  --clr-border:   #dde1e6;
  --radius:       6px;
  --shadow:       0 2px 12px rgba(0,0,0,0.08);
  --transition:   0.25s ease;
  --max-w:        1200px;
  --font-main:    'Segoe UI', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--clr-bg);
  color: var(--clr-text);
  font-size: 16px;
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--clr-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--clr-accent2); }

img { display: block; width: 100%; height: auto; object-fit: cover; }

/* ---- HEADER / NAV ---- */
.site-header {
  background: var(--clr-dark);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-icon {
  width: 38px; height: 38px;
  background: var(--clr-accent);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.logo-icon svg { width: 22px; height: 22px; fill: #fff; }
.logo-text { color: #fff; }
.logo-text .brand   { font-size: 1rem; font-weight: 700; letter-spacing: .4px; line-height: 1.2; }
.logo-text .tagline { font-size: 0.68rem; color: #a8b8c8; letter-spacing: .5px; text-transform: uppercase; }
nav { display: flex; gap: 2px; align-items: center; }
nav a {
  color: #c8d5e0; font-size: 0.82rem; font-weight: 500;
  padding: 6px 10px; border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
  letter-spacing: .3px;
}
nav a:hover, nav a.active { background: var(--clr-accent); color: #fff; }

/* ---- PAGE TITLE BANNER ---- */
.page-title { background: var(--clr-mid); color: #fff; padding: 52px 24px; }
.page-title-inner { max-width: var(--max-w); margin: 0 auto; }
.page-title h1 { font-size: clamp(1.6rem,3.5vw,2.4rem); font-weight: 700; margin-bottom: 10px; }
.page-title p  { color: #a8c0d0; font-size: 0.95rem; max-width: 560px; }

/* ---- HERO (home) ---- */
.hero-split {
  display: grid; grid-template-columns: 1fr 1fr;
  min-height: 440px;
}
.hero-split-text {
  background: var(--clr-mid); color: #fff;
  padding: 64px 48px;
  display: flex; flex-direction: column; justify-content: center;
}
.hero-split-text h1 { font-size: clamp(1.5rem,3vw,2.3rem); font-weight: 700; margin-bottom: 14px; line-height: 1.25; }
.hero-split-text p  { color: #a8c0d0; font-size: 0.95rem; margin-bottom: 28px; max-width: 420px; }
.hero-split-img { overflow: hidden; }
.hero-split-img img { height: 100%; width: 100%; object-fit: cover; }

/* ---- BREADCRUMB ---- */
.breadcrumb { background: var(--clr-white); border-bottom: 1px solid var(--clr-border); }
.breadcrumb-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 10px 24px;
  display: flex; gap: 8px; align-items: center;
  font-size: 0.82rem; color: var(--clr-muted);
}
.breadcrumb-inner a { color: var(--clr-muted); }
.breadcrumb-inner a:hover { color: var(--clr-accent); }
.breadcrumb-inner span { color: var(--clr-text); font-weight: 600; }
.sep { color: #b0bbc5; }

/* ---- SECTIONS ---- */
.section     { padding: 64px 24px; }
.section-alt { background: var(--clr-white); }
.container   { max-width: var(--max-w); margin: 0 auto; }

.section-label {
  display: block; font-size: 0.75rem; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--clr-accent); margin-bottom: 8px;
}
.section-title {
  font-size: clamp(1.3rem,3vw,1.9rem); font-weight: 700;
  color: var(--clr-dark); margin-bottom: 10px; line-height: 1.3;
}
.section-sub  { color: var(--clr-muted); font-size: 0.95rem; max-width: 600px; margin-bottom: 36px; }

/* ---- CARDS ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px,1fr));
  gap: 24px;
}
.card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 6px 24px rgba(0,0,0,0.12); }
.card-img { height: 230px; overflow: hidden; }
.card-img img { height: 100%; transition: transform 0.4s ease; }
.card:hover .card-img img { transform: scale(1.04); }
.card-body { padding: 22px; }
.card-tag {
  display: inline-block; font-size: 0.72rem; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  color: var(--clr-accent); background: #eaf4ee;
  padding: 3px 10px; border-radius: 3px; margin-bottom: 10px;
}
.card h3 { font-size: 1.05rem; font-weight: 700; color: var(--clr-dark); margin-bottom: 8px; }
.card p  { font-size: 0.9rem; color: var(--clr-muted); line-height: 1.6; }

/* ---- FEATURES ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px,1fr));
  gap: 20px;
}
.feature-item {
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-left: 4px solid var(--clr-accent);
  border-radius: var(--radius); padding: 24px 20px;
  box-shadow: var(--shadow);
}
.feat-icon {
  width: 40px; height: 40px; background: #eaf4ee;
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.feat-icon svg { width: 22px; height: 22px; stroke: var(--clr-accent); fill: none; stroke-width: 2; }
.feature-item h4 { font-size: 0.95rem; font-weight: 700; color: var(--clr-dark); margin-bottom: 6px; }
.feature-item p  { font-size: 0.85rem; color: var(--clr-muted); line-height: 1.55; }

/* ---- STAT ROW ---- */
.stat-row {
  display: flex; flex-wrap: wrap; gap: 0;
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  margin: 40px 0;
}
.stat-item {
  flex: 1 1 150px; padding: 28px 20px; text-align: center;
  border-right: 1px solid var(--clr-border);
}
.stat-item:last-child { border-right: none; }
.stat-item .num  { font-size: 2rem; font-weight: 800; color: var(--clr-dark); line-height: 1; }
.stat-item .unit { font-size: 0.72rem; font-weight: 700; color: var(--clr-accent); text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; }
.stat-item .lbl  { font-size: 0.82rem; color: var(--clr-muted); margin-top: 6px; }

/* ---- SPEC TABLE ---- */
.spec-table { width: 100%; border-collapse: collapse; margin-top: 16px; }
.spec-table th, .spec-table td {
  padding: 12px 16px; text-align: left;
  border-bottom: 1px solid var(--clr-border); font-size: 0.9rem;
}
.spec-table th { background: #f0f2f4; font-weight: 700; color: var(--clr-dark); width: 42%; }
.spec-table tr:last-child td, .spec-table tr:last-child th { border-bottom: none; }

/* ---- INFO BOX ---- */
.info-box {
  background: #eaf4ee; border: 1px solid #c3dfc9;
  border-left: 4px solid var(--clr-accent);
  border-radius: var(--radius); padding: 16px 20px;
  font-size: 0.9rem; color: #2d4a35; margin: 24px 0;
}

/* ---- AD BANNER (Google Ads compliant) ---- */
.ad-banner {
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-radius: var(--radius); padding: 28px 32px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap; box-shadow: var(--shadow); margin: 40px 0;
}
.ad-banner .ad-text h3 { font-size: 1.05rem; font-weight: 700; color: var(--clr-dark); margin-bottom: 6px; }
.ad-banner .ad-text p  { font-size: 0.88rem; color: var(--clr-muted); max-width: 480px; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-block; background: var(--clr-accent);
  color: #fff; padding: 10px 24px;
  border-radius: var(--radius); font-size: 0.88rem; font-weight: 600;
  white-space: nowrap; transition: background var(--transition); border: none; cursor: pointer;
}
.btn:hover { background: #2e6344; color: #fff; }
.btn-outline {
  background: transparent; border: 2px solid var(--clr-accent);
  color: var(--clr-accent);
}
.btn-outline:hover { background: var(--clr-accent); color: #fff; }
.btn-dark { background: var(--clr-dark); }
.btn-dark:hover { background: #111d28; color: #fff; }

/* ---- CONTACT STRIP ---- */
.contact-strip { background: var(--clr-dark); color: #fff; padding: 52px 24px; }
.contact-strip-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 40px;
  justify-content: space-between; align-items: flex-start;
}
.contact-strip h2 { font-size: 1.4rem; font-weight: 700; margin-bottom: 6px; }
.contact-strip p  { color: #a8b8c8; font-size: 0.92rem; }
.contact-items { display: flex; flex-direction: column; gap: 14px; }
.contact-item { display: flex; align-items: flex-start; gap: 12px; }
.contact-item svg { width: 18px; height: 18px; stroke: var(--clr-accent); fill: none; stroke-width: 2; flex-shrink: 0; margin-top: 2px; }
.contact-item span { font-size: 0.9rem; color: #c8d5e0; }

/* ---- CONTACT FORM ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
label { font-size: 0.85rem; font-weight: 600; color: var(--clr-dark); }
input, select, textarea {
  padding: 10px 14px; border: 1px solid var(--clr-border);
  border-radius: var(--radius); font-family: var(--font-main); font-size: 0.9rem;
  background: var(--clr-white); color: var(--clr-text);
  transition: border-color var(--transition);
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(61,122,86,.12);
}
textarea { resize: vertical; min-height: 120px; }

/* ---- FOOTER ---- */
footer { background: #111d28; color: #7a8a98; padding: 32px 24px; margin-top: auto; }
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 16px;
  justify-content: space-between; align-items: center;
}
.footer-inner p { font-size: 0.82rem; }
.footer-nav { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-nav a { font-size: 0.82rem; color: #7a8a98; }
.footer-nav a:hover { color: var(--clr-accent); }

/* ---- IMAGE SHOWCASE ---- */
.img-showcase {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 32px 0;
}
.img-showcase figure { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.img-showcase figure img { height: 280px; width: 100%; object-fit: cover; }
.img-showcase figcaption {
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-top: none; padding: 12px 16px;
  font-size: 0.82rem; color: var(--clr-muted);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .hero-split { grid-template-columns: 1fr; }
  .hero-split-img { height: 260px; }
  .hero-split-text { padding: 48px 32px; }
  .img-showcase { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  nav { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--clr-border); }
  .card-grid { grid-template-columns: 1fr; }
  .ad-banner  { flex-direction: column; }
  .contact-strip-inner { flex-direction: column; }
}
@media (max-width: 480px) {
  .section { padding: 44px 16px; }
  .header-inner { padding: 0 14px; }
}