:root {
  --bg-dark: #070B14;
  --bg-card: #101728;
  --bg-card-hover: #19233C;
  --cyan-accent: #06B6D4;
  --blue-accent: #3B82F6;
  --green-accent: #10B981;
  --text-main: #F8FAFC;
  --text-muted: #CBD5E1;
  --border-color: rgba(6, 182, 212, 0.3);
  --shadow-glow: 0 10px 30px rgba(6, 182, 212, 0.25);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: 'Open Sans', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
}

a {
  color: inherit;
  text-decoration: none;
}

/* TOP BAR */
.top-bar {
  background: #03050A;
  color: #FFFFFF;
  font-size: 0.85rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-color);
}

.top-bar-content {
  width: 100%;
  max-width: 1250px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 9999;
  background: rgba(7, 11, 20, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.header-container {
  width: 100%;
  max-width: 1250px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.6rem;
  font-weight: 900;
  color: #FFFFFF;
}

.brand-logo span {
  color: var(--cyan-accent);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.8rem;
  align-items: center;
}

.nav-link {
  color: var(--text-main);
  font-weight: 700;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--cyan-accent);
}

.btn-cyan {
  background: linear-gradient(135deg, #06B6D4 0%, #3B82F6 100%);
  color: #FFFFFF;
  font-weight: 800;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.6);
}

/* HERO SECTION */
.hero-section {
  background: linear-gradient(135deg, rgba(7, 11, 20, 0.94) 0%, rgba(3, 5, 10, 0.98) 100%),
              url('https://images.unsplash.com/photo-1588702547919-26089e690ecd?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
  padding: 5.5rem 0 4.5rem;
  border-bottom: 3px solid var(--cyan-accent);
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(6, 182, 212, 0.18);
  color: var(--cyan-accent);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  margin-bottom: 1.2rem;
  border: 1px solid var(--border-color);
  letter-spacing: 1px;
}

.hero-title {
  font-size: 3.2rem;
  color: #FFFFFF;
  margin-bottom: 1.2rem;
  line-height: 1.2;
}

.hero-title span {
  color: var(--cyan-accent);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: #CBD5E1;
  max-width: 920px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

/* SEARCH FILTER BOX */
.search-filter-box {
  background: rgba(16, 23, 40, 0.95);
  border: 2px solid var(--cyan-accent);
  border-radius: 20px;
  padding: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
  display: grid;
  grid-template-columns: repeat(4, 1fr) auto;
  gap: 1rem;
  align-items: center;
}

.form-group select, .form-group input {
  width: 100%;
  padding: 0.85rem 1rem;
  background: #070B14;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: #FFFFFF;
  font-size: 0.95rem;
  outline: none;
}

/* GRID & CARDS */
.section-container {
  width: 100%;
  max-width: 1250px;
  margin: 0 auto;
  padding: 4.5rem 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.4rem;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.tech-card:hover {
  transform: translateY(-6px);
  border-color: var(--cyan-accent);
  box-shadow: var(--shadow-glow);
}

.tech-thumb {
  position: relative;
  height: 230px;
  background-size: cover;
  background-position: center;
}

.tech-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--cyan-accent);
  color: #070B14;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
}

.tech-rating {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.85);
  color: #FBBF24;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  border: 1px solid #FBBF24;
}

.tech-body {
  padding: 1.5rem;
}

.tech-title {
  font-size: 1.3rem;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

/* FLOATING WA WIDGET */
.floating-wa-widget {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #25D366;
  color: #FFFFFF;
  padding: 0.85rem 1.5rem;
  border-radius: 50px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-weight: 800;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
  z-index: 99999;
}

.floating-wa-icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* FOOTER */
.site-footer {
  background: #03050A;
  color: var(--text-muted);
  padding: 4.5rem 0 2rem;
  border-top: 3px solid var(--cyan-accent);
  margin-top: 4rem;
}

.footer-container {
  width: 100%;
  max-width: 1250px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1.3fr 1.4fr 1.1fr;
  gap: 3.5rem;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  margin-top: 3rem;
  font-size: 0.85rem;
}

@media (max-width: 992px) {
  .search-filter-box { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; gap: 2rem; }
  .hero-title { font-size: 2.2rem; }
}