:root {
  --primary-color: #142b4f;
  --primary-dark: #0f223a;
  --primary-light: #3b82f6;
  --secondary-color: #b8860b;
  --secondary-dark: #d4af37;
  --accent-light: #f1f5f9;
  --text-color: #1e293b;
  --text-light: #64748b;
  --light-color: #ffffff;
  --border-light: #e2e8f0;
  --shadow: 0 6px 18px rgba(20, 43, 79, 0.12);
  --shadow-hover: 0 16px 48px rgba(20, 43, 79, 0.16);
  --transition: all 0.25s ease;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

html { scroll-behavior: smooth; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Loading */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}
.loading-screen.hidden { opacity: 0; visibility: hidden; transition: opacity 0.4s, visibility 0.4s; }
.loading-spinner {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 4px solid rgba(255,255,255,0.25);
  border-top-color: #fff;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Header */
.header-wrapper {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.2);
  transition: var(--transition);
}
.header-wrapper.scrolled { background: rgba(255,255,255,0.95); box-shadow: 0 10px 30px rgba(0,0,0,0.08); }

header { padding: 14px 0; }
nav { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; gap: 12px; align-items: center; text-decoration: none; color: var(--primary-color); font-weight: 800; font-size: 1.25rem; }
.logo img { width: 42px; height: 42px; border-radius: 12px; box-shadow: var(--shadow); }
.nav-links { list-style: none; display: flex; gap: 26px; }
.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 10px;
  transition: var(--transition);
}
.nav-links a:hover { background: rgba(20,43,79,0.08); color: var(--primary-color); }

/* Hero */
.hero {
  min-height: 80vh;
  padding-top: 90px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(20,43,79,0.92) 0%, rgba(59,130,246,0.40) 55%, rgba(184,134,11,0.45) 100%),
    url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80') center/cover no-repeat;
  color: #fff;
  display: flex;
  align-items: center;
}
.hero::after {
  content: '';
  position: absolute;
  inset: -40% -20% auto -20%;
  height: 220px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.22), transparent);
  transform: rotate(12deg);
  animation: heroShine 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes heroShine {
  0%, 100% { transform: translateX(-20%) rotate(12deg); opacity: 0.35; }
  50% { transform: translateX(20%) rotate(12deg); opacity: 0.55; }
}
.hero-content { padding: 0 0 60px; position: relative; z-index: 1; }
.hero h1 {
  font-size: 3rem;
  letter-spacing: 1px;
  margin-bottom: 14px;
  text-shadow: 0 14px 40px rgba(0,0,0,0.35);
}
.hero .subtitle { font-size: 1.5rem; font-weight: 300; margin-bottom: 16px; }
.hero-description {
  color: rgba(255,255,255,0.92);
  max-width: 720px;
  margin-bottom: 30px;
  font-weight: 650;
}

.cta-buttons { display: flex; gap: 18px; flex-wrap: wrap; }


.btn {
  border: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  padding: 14px 28px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}
.btn-primary { background: linear-gradient(135deg, #b8860b 0%, #d4af37 100%); color: #fff; box-shadow: 0 12px 30px rgba(184,134,11,0.35); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 45px rgba(184,134,11,0.45); }
.btn-secondary { background: rgba(255,255,255,0.18); border: 2px solid rgba(255,255,255,0.35); color: #fff; }
.btn-secondary:hover { background: rgba(255,255,255,0.28); transform: translateY(-3px); }

/* Tentang */
.about { padding: 90px 0 70px; background: #fff; }
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; max-width: 1100px; margin: 0 auto; }
.about-card { background: #f8fafc; border: 1px solid rgba(20,43,79,0.08); border-radius: 18px; padding: 22px; box-shadow: 0 6px 18px rgba(20,43,79,0.06); transition: var(--transition); }
.about-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.about-icon { width: 54px; height: 54px; border-radius: 14px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #142b4f 0%, #3b82f6 100%); color: #fff; margin-bottom: 12px; }
.about-card h3 { color: var(--primary-color); font-size: 1.15rem; margin-bottom: 10px; }
.about-card p { color: var(--text-light); font-weight: 650; }

/* Produk Andalan */
.features { padding: 90px 0 70px; background: linear-gradient(135deg, rgba(241,245,249,1) 0%, rgba(255,255,255,1) 60%); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  background: rgba(255,255,255,0.94);
  border: 1px solid rgba(20,43,79,0.10);
  border-radius: 22px;
  box-shadow: 0 12px 40px rgba(20,43,79,0.06);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  padding: 18px 18px 16px;

  /* bikin rapi & tinggi seragam */
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-card::before {
  content: '';
  position: absolute;
  left: -25%;
  top: -70%;
  width: 150%;
  height: 140%;
  background: radial-gradient(circle at 30% 30%, rgba(59,130,246,0.20), transparent 55%);
  transform: rotate(10deg);
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.feature-media {
  height: 130px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.feature-media img {
  max-width: 100%;
  max-height: 130px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 10px 22px rgba(0,0,0,0.10));
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
  text-align: center;
}

.feature-description {
  color: var(--text-light);
  font-weight: 650;
  line-height: 1.7;
  position: relative;
  z-index: 1;
  text-align: center;
  margin-bottom: 12px;
  min-height: 56px;
  display: flex;
  align-items: center;
}

.feature-youtube {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: linear-gradient(135deg, var(--primary-color) 0%, #2552a8 100%);
  color: #fff;
  text-decoration: none;
  padding: 12px 12px;
  border-radius: 16px;
  font-weight: 850;
  position: relative;
  z-index: 1;
  transition: var(--transition);
  margin-top: auto; /* biar tombol selalu di bawah */
}

.feature-youtube:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1d3f87 100%);
}

@media (max-width: 900px) {
  .features-grid { grid-template-columns: 1fr; }
  .feature-card { align-items: stretch; }
}



/* Mengapa Memilih */
.about-why { padding: 70px 0 90px; background: #fff; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; max-width: 1100px; margin: 0 auto; }
.why-item { background: #f8fafc; border: 1px solid rgba(20,43,79,0.08); border-radius: 20px; padding: 22px; box-shadow: 0 10px 30px rgba(20,43,79,0.05); display: flex; gap: 16px; align-items: flex-start; transition: var(--transition); }
.why-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.why-icon { width: 46px; height: 46px; border-radius: 14px; background: linear-gradient(135deg, #b8860b 0%, #d4af37 100%); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
.why-text h3 { font-size: 1.05rem; color: var(--primary-color); margin-bottom: 6px; }
.why-text p { color: var(--text-light); font-weight: 650; line-height: 1.65; }

/* Katalog */
.products-preview { padding: 90px 0 80px; }
section { scroll-margin-top: 120px; }

.section-title { font-size: 2.2rem; font-weight: 800; color: var(--primary-color); text-align: center; margin-bottom: 10px; }
.section-subtitle { color: var(--text-light); text-align: center; max-width: 700px; margin: 0 auto 30px; }


.katalog-panel {
  background: #fff;
  border: 1px solid rgba(20,43,79,0.08);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 22px;
  margin: 0 auto 26px;
  max-width: 920px;
}

.panel-row { display: grid; grid-template-columns: 1fr 1.2fr; gap: 18px; }
.form-group label { display: block; font-weight: 700; color: var(--primary-color); margin-bottom: 8px; }
.form-select, .form-input {
  width: 100%;
  padding: 14px 14px;
  border-radius: 12px;
  border: 1px solid rgba(20,43,79,0.15);
  background: #fff;
  outline: none;
  font-size: 0.98rem;
  transition: var(--transition);
}
.form-select:focus, .form-input:focus { border-color: var(--primary-color); box-shadow: 0 0 0 4px rgba(20,43,79,0.08); }

.panel-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 16px; }

.results-header {
  max-width: 1100px;
  margin: 0 auto 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.results-info { color: var(--text-light); font-weight: 700; }
.view-options { display: flex; gap: 10px; }
.view-btn {
  width: 42px; height: 42px;
  border-radius: 12px;
  border: 1px solid rgba(20,43,79,0.12);
  background: #fff;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
}
.view-btn:hover { border-color: var(--primary-color); color: var(--primary-color); transform: translateY(-2px); }
.view-btn.active { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }

.product-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}

.product-grid.list-view { grid-template-columns: 1fr; }

.product-card {
  background: #fff;
  border: 1px solid rgba(20,43,79,0.08);
  border-radius: 18px;
  box-shadow: 0 6px 20px rgba(20,43,79,0.06);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.product-card .product-title { font-size: 1.25rem; font-weight: 900; color: var(--primary-color); }
.product-card .product-subtitle { color: var(--text-light); font-weight: 700; margin-top: 4px; margin-bottom: 10px; }

.product-specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 14px; margin: 14px 0 10px; }
.spec-item { display: flex; flex-direction: column; gap: 2px; }
.spec-label { color: var(--text-light); font-weight: 700; font-size: 0.88rem; }
.spec-value { color: var(--primary-color); font-weight: 800; font-size: 0.96rem; }

.feature-list { padding-left: 18px; color: var(--text-light); font-weight: 600; }
.feature-list li { margin: 6px 0; }

.product-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--primary-color);
  color: #fff;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 14px;
  font-weight: 800;
  margin-top: 12px;
  transition: var(--transition);
  width: 100%;
}
.product-link:hover { transform: translateY(-2px); background: var(--primary-dark); }

.no-results {
  text-align: center;
  padding: 34px 15px;
  color: var(--text-light);
  font-weight: 700;
}

.pagination { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin: 26px 0 10px; }
.pagination .pagination-btn {
  width: 42px; height: 42px;
  border-radius: 14px;
  border: 1px solid rgba(20,43,79,0.12);
  background: #fff;
  cursor: pointer;
  font-weight: 900;
  color: var(--text-light);
  transition: var(--transition);
}
.pagination .pagination-btn.active { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.pagination .pagination-btn:disabled { opacity: .55; cursor: not-allowed; }
.pagination-info { align-self: center; color: var(--text-light); font-weight: 800; padding: 0 10px; }

/* Floating */
.floating-element {
  position: fixed;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  cursor: pointer;
  z-index: 999;
  transition: var(--transition);
  border: 0;
}
.floating-whatsapp { bottom: 26px; right: 26px; background: #25D366; color: #fff; }
.floating-whatsapp:hover { transform: translateY(-3px) scale(1.05); }
.floating-back-to-top { bottom: 96px; right: 26px; background: var(--primary-color); color: #fff; opacity: 0; visibility: hidden; }
.floating-back-to-top.visible { opacity: 1; visibility: visible; }
.floating-back-to-top:hover { transform: translateY(-3px) scale(1.05); }

/* Responsive (Mobile First) */
@media (max-width: 860px) {
  .panel-row { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.2rem; }
  .hero .subtitle { font-size: 1.2rem; }
  .product-specs { grid-template-columns: 1fr; }

  /* Mobile navbar/layout */
  nav { flex-direction: column; align-items: flex-start; gap: 10px; }
  .nav-links { flex-wrap: wrap; gap: 12px; }

  /* Catalog controls */
  .panel-actions { flex-direction: column; align-items: stretch; }
  .panel-actions .btn { width: 100%; justify-content: center; }
  .results-header { flex-direction: column; align-items: flex-start; }

  /* Fix floating buttons so they don't overlap */
  .floating-whatsapp { bottom: 18px; right: 16px; }
  .floating-back-to-top { bottom: 78px; right: 16px; }
}

/* Desktop/Teblet tuning */
@media (min-width: 768px) {
  #katalog { scroll-margin-top: 140px; }
  .hero h1 { font-size: 3rem; }
}