/*
Theme Name: VTG Venaka TReLeaf
Theme URI: https://venaka.eu
Description: Applied AI Research & Development - Nexus Product Suite
Author: Venaka TReLeaf GbR
Version: 3.0.0
Text Domain: vtg-theme
*/

/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
  --vtg-dark: #0F172A;
  --vtg-navy: #1E293B;
  --vtg-slate: #64748B;
  --vtg-green: #10B981;
  --vtg-green-deep: #059669;
  --vtg-green-pale: #D1FAE5;
  --vtg-green-faint: #ECFDF5;
  --vtg-cyan: #06B6D4;
  --vtg-blue: #3B82F6;
  --vtg-violet: #8B5CF6;
  --vtg-warm: #F8FAFC;
  --vtg-border: rgba(255,255,255,0.06);
  --vtg-border-light: rgba(0,0,0,0.06);
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --max-w: 1200px;
  --header-h: 72px;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-body); color: var(--vtg-slate); background: #fff; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

.vtg-container { max-width: var(--max-w); margin: 0 auto; padding: 0 28px; }

/* ============================================
   HEADER
   ============================================ */
.vtg-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  background: rgba(15,23,42,0.85);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--vtg-border);
  transition: all 0.35s ease;
}
.vtg-header--scrolled { background: rgba(15,23,42,0.97); }
.vtg-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h); max-width: var(--max-w); margin: 0 auto; padding: 0 28px;
}
.vtg-logo img { height: 36px; width: auto; }

.vtg-nav { display: flex; align-items: center; gap: 6px; }
.vtg-nav > a, .vtg-nav > .vtg-nav__item > a {
  font-size: 13.5px; font-weight: 500; color: rgba(255,255,255,0.65);
  padding: 8px 14px; border-radius: 8px; transition: all 0.2s ease;
}
.vtg-nav > a:hover, .vtg-nav > .vtg-nav__item > a:hover { color: #fff; background: rgba(255,255,255,0.06); }
.vtg-nav .vtg-cta-btn {
  background: var(--vtg-green) !important; color: #fff !important;
  padding: 8px 20px !important; border-radius: 8px; font-weight: 600;
}
.vtg-nav .vtg-cta-btn:hover { background: var(--vtg-green-deep) !important; }

/* Dropdown */
.vtg-nav__item { position: relative; }
.vtg-nav__item--has-children > a::after {
  content: ''; width: 0; height: 0; margin-left: 4px;
  border-left: 3.5px solid transparent; border-right: 3.5px solid transparent;
  border-top: 3.5px solid currentColor; opacity: 0.4; display: inline-block;
}
.vtg-nav__dropdown {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  background: var(--vtg-navy); border: 1px solid var(--vtg-border);
  border-radius: 14px; padding: 10px; min-width: 220px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  opacity: 0; visibility: hidden; transition: all 0.2s ease; pointer-events: none; z-index: 100;
}
.vtg-nav__dropdown::before { content: ''; position: absolute; top: -10px; left: 0; right: 0; height: 10px; }
.vtg-nav__item:hover > .vtg-nav__dropdown { opacity: 1; visibility: visible; pointer-events: auto; }
.vtg-nav__dropdown a {
  display: block !important; font-size: 13px !important;
  color: rgba(255,255,255,0.55) !important; padding: 8px 14px !important;
  border-radius: 8px !important; transition: all 0.15s ease !important;
}
.vtg-nav__dropdown a:hover { background: rgba(255,255,255,0.06) !important; color: #fff !important; }

/* Mobile toggle */
.vtg-mobile-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 28px; height: 24px; flex-direction: column; justify-content: space-between;
}
.vtg-mobile-toggle span { display: block; width: 100%; height: 2px; background: #fff; border-radius: 2px; }

@media (max-width: 1024px) {
  .vtg-nav { display: none; }
  .vtg-mobile-toggle { display: flex; }
}

/* ============================================
   HERO SECTION
   ============================================ */
.vtg-hero {
  min-height: 100vh; display: flex; align-items: center;
  background: var(--vtg-dark); position: relative; overflow: hidden;
  padding: calc(var(--header-h) + 40px) 0 60px;
}
.vtg-hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(16,185,129,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,185,129,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.vtg-hero__glow {
  position: absolute; top: -200px; right: -200px;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(16,185,129,0.08), transparent 60%);
}
.vtg-hero__glow--2 {
  top: auto; bottom: -200px; right: auto; left: -200px;
  background: radial-gradient(circle, rgba(6,182,212,0.06), transparent 60%);
}
.vtg-hero__content { position: relative; z-index: 2; max-width: 700px; }
.vtg-hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 600; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--vtg-green); margin-bottom: 24px;
  padding: 6px 18px; border-radius: 40px;
  background: rgba(16,185,129,0.08); border: 1px solid rgba(16,185,129,0.15);
}
.vtg-hero__badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--vtg-green); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }
.vtg-hero h1 {
  font-family: var(--font-display); font-size: clamp(38px, 5vw, 58px);
  font-weight: 400; line-height: 1.1; color: #fff; margin-bottom: 22px;
}
.vtg-hero h1 em { font-style: italic; color: var(--vtg-green); }
.vtg-hero p { font-size: 17px; color: rgba(255,255,255,0.5); line-height: 1.75; max-width: 560px; margin-bottom: 32px; }
.vtg-hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.vtg-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 10px; font-size: 14px; font-weight: 600;
  transition: all 0.25s ease; border: none; cursor: pointer;
}
.vtg-btn--primary { background: var(--vtg-green); color: #fff; }
.vtg-btn--primary:hover { background: var(--vtg-green-deep); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(16,185,129,0.25); }
.vtg-btn--outline { background: transparent; color: #fff; border: 1px solid var(--vtg-border); }
.vtg-btn--outline:hover { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.15); }

/* Hero stats */
.vtg-hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  margin-top: 60px; padding-top: 36px; border-top: 1px solid var(--vtg-border);
}
.vtg-hero__stat-value { font-family: var(--font-display); font-size: 32px; color: #fff; }
.vtg-hero__stat-label { font-size: 12px; color: var(--vtg-slate); margin-top: 4px; }

/* ============================================
   SECTIONS (generic)
   ============================================ */
.vtg-section { padding: 100px 0; }
.vtg-section--dark { background: var(--vtg-dark); }
.vtg-section--navy { background: var(--vtg-navy); }
.vtg-section--warm { background: var(--vtg-warm); }
.vtg-section__label {
  font-size: 11px; font-weight: 600; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--vtg-green); margin-bottom: 14px;
}
.vtg-section__title {
  font-family: var(--font-display); font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 400; line-height: 1.15; margin-bottom: 18px;
}
.vtg-section--dark .vtg-section__title, .vtg-section--navy .vtg-section__title { color: #fff; }
.vtg-section--warm .vtg-section__title { color: var(--vtg-dark); }
.vtg-section__title em { font-style: italic; color: var(--vtg-green); }
.vtg-section__intro {
  font-size: 16px; line-height: 1.75; max-width: 620px; margin-bottom: 48px;
}
.vtg-section--dark .vtg-section__intro { color: rgba(255,255,255,0.5); }

/* ============================================
   ABOUT SECTION
   ============================================ */
.vtg-about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.vtg-about-grid h2 {
  font-family: var(--font-display); font-size: 34px; color: var(--vtg-dark);
  margin-bottom: 20px; font-weight: 400;
}
.vtg-about-grid h2 em { font-style: italic; color: var(--vtg-green); }
.vtg-about-grid p { font-size: 15px; color: var(--vtg-slate); line-height: 1.8; margin-bottom: 14px; }
.vtg-about-visual {
  background: linear-gradient(145deg, var(--vtg-dark), var(--vtg-navy));
  border-radius: 20px; padding: 40px; position: relative; overflow: hidden;
  min-height: 380px; display: flex; flex-direction: column; justify-content: flex-end;
}
.vtg-about-visual__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(16,185,129,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,185,129,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ============================================
   R&D APPROACH (4 steps)
   ============================================ */
.vtg-approach-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.vtg-approach-card {
  background: rgba(255,255,255,0.03); border: 1px solid var(--vtg-border);
  border-radius: 16px; padding: 32px 24px; transition: all 0.3s ease;
}
.vtg-approach-card:hover { background: rgba(255,255,255,0.06); border-color: var(--vtg-green); transform: translateY(-4px); }
.vtg-approach-card__num {
  font-family: var(--font-display); font-size: 36px; color: var(--vtg-green);
  margin-bottom: 16px; opacity: 0.6;
}
.vtg-approach-card h3 { font-family: var(--font-display); font-size: 18px; color: #fff; margin-bottom: 10px; font-weight: 400; }
.vtg-approach-card p { font-size: 13px; color: var(--vtg-slate); line-height: 1.65; }

/* ============================================
   PRODUCT SUITE (Nexus)
   ============================================ */
.vtg-products-header { text-align: center; margin-bottom: 56px; }
.vtg-products-header .vtg-section__intro { margin: 0 auto; }
.vtg-products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.vtg-product-card {
  background: var(--vtg-navy); border: 1px solid var(--vtg-border);
  border-radius: 18px; padding: 0; overflow: hidden; transition: all 0.35s ease;
  display: flex; flex-direction: column;
}
.vtg-product-card:hover { border-color: var(--vtg-green); transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.3); }
.vtg-product-card__img {
  height: 180px; overflow: hidden; position: relative;
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(6,182,212,0.1));
}
.vtg-product-card__img img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; transition: opacity 0.3s; }
.vtg-product-card:hover .vtg-product-card__img img { opacity: 1; }
.vtg-product-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.vtg-product-card__cluster {
  display: inline-block; font-size: 10px; font-weight: 600; letter-spacing: 1.5px;
  text-transform: uppercase; padding: 4px 12px; border-radius: 20px;
  background: rgba(16,185,129,0.1); color: var(--vtg-green); margin-bottom: 12px; align-self: flex-start;
}
.vtg-product-card h3 { font-family: var(--font-display); font-size: 20px; color: #fff; margin-bottom: 8px; font-weight: 400; }
.vtg-product-card p { font-size: 13px; color: var(--vtg-slate); line-height: 1.6; flex: 1; }
.vtg-product-card__link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--vtg-green); margin-top: 16px;
}

/* Featured products (larger cards) */
.vtg-products-featured { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.vtg-product-card--featured .vtg-product-card__img { height: 220px; }

/* ============================================
   CAPABILITIES
   ============================================ */
.vtg-caps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.vtg-cap-card {
  background: #fff; border-radius: 16px; padding: 30px 24px;
  border: 1px solid var(--vtg-border-light); transition: all 0.3s ease;
}
.vtg-cap-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.06); border-color: var(--vtg-green); }
.vtg-cap-card__icon { font-size: 28px; margin-bottom: 16px; }
.vtg-cap-card h3 { font-family: var(--font-display); font-size: 18px; color: var(--vtg-dark); margin-bottom: 8px; font-weight: 400; }
.vtg-cap-card p { font-size: 13px; color: var(--vtg-slate); line-height: 1.6; margin-bottom: 14px; }
.vtg-cap-card__link { font-size: 13px; font-weight: 600; color: var(--vtg-green); }

/* ============================================
   INDUSTRIES
   ============================================ */
.vtg-industries-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.vtg-industry-pill {
  display: flex; align-items: center; gap: 12px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--vtg-border);
  border-radius: 12px; padding: 18px 20px; transition: all 0.25s ease;
}
.vtg-industry-pill:hover { background: rgba(16,185,129,0.06); border-color: var(--vtg-green); }
.vtg-industry-pill__icon { font-size: 22px; flex-shrink: 0; }
.vtg-industry-pill span { font-size: 14px; color: rgba(255,255,255,0.7); font-weight: 500; }
.vtg-industry-pill:hover span { color: #fff; }

/* ============================================
   R&D
   ============================================ */
.vtg-rd-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.vtg-rd-card {
  background: #fff; border-radius: 16px; padding: 32px 28px;
  border: 1px solid var(--vtg-border-light); transition: all 0.3s ease;
}
.vtg-rd-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.06); }
.vtg-rd-card h3 { font-family: var(--font-display); font-size: 20px; color: var(--vtg-dark); margin-bottom: 10px; font-weight: 400; }
.vtg-rd-card p { font-size: 14px; color: var(--vtg-slate); line-height: 1.7; margin-bottom: 16px; }
.vtg-rd-card__link { font-size: 13px; font-weight: 600; color: var(--vtg-green); }

/* ============================================
   CTA
   ============================================ */
.vtg-cta-section {
  background: linear-gradient(145deg, var(--vtg-dark) 0%, #0D2818 100%);
  padding: 80px 0; text-align: center; position: relative; overflow: hidden;
}
.vtg-cta-section h2 {
  font-family: var(--font-display); font-size: 36px; color: #fff;
  margin-bottom: 16px; font-weight: 400;
}
.vtg-cta-section p { font-size: 16px; color: rgba(255,255,255,0.5); margin-bottom: 32px; max-width: 500px; margin-left: auto; margin-right: auto; }
.vtg-cta-section .vtg-hero__actions { justify-content: center; }

/* ============================================
   FOOTER
   ============================================ */
.vtg-footer { background: var(--vtg-dark); border-top: 1px solid var(--vtg-border); padding: 60px 0 30px; }
.vtg-footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.vtg-footer__brand p { font-size: 13px; color: var(--vtg-slate); line-height: 1.7; max-width: 280px; margin-top: 14px; }
.vtg-footer__col h5 {
  font-size: 11px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase;
  color: rgba(255,255,255,0.3); margin-bottom: 16px;
}
.vtg-footer__col a { display: block; font-size: 13px; color: var(--vtg-slate); padding: 4px 0; transition: color 0.2s; }
.vtg-footer__col a:hover { color: var(--vtg-green); }
.vtg-footer__bottom {
  border-top: 1px solid var(--vtg-border); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
}
.vtg-footer__bottom p { font-size: 12px; color: var(--vtg-slate); }
.vtg-footer__bottom a { font-size: 12px; color: var(--vtg-slate); margin-left: 20px; }

/* ============================================
   ANIMATIONS
   ============================================ */
.vtg-fade-up { opacity: 0; transform: translateY(24px); transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1); }
.vtg-visible { opacity: 1; transform: translateY(0); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .vtg-products-featured, .vtg-products-grid { grid-template-columns: repeat(2, 1fr); }
  .vtg-approach-grid { grid-template-columns: repeat(2, 1fr); }
  .vtg-footer__grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .vtg-hero { min-height: auto; padding: 120px 0 60px; }
  .vtg-hero__stats { grid-template-columns: repeat(2, 1fr); }
  .vtg-about-grid { grid-template-columns: 1fr; }
  .vtg-products-featured, .vtg-products-grid, .vtg-caps-grid, .vtg-industries-grid, .vtg-rd-grid { grid-template-columns: 1fr; }
  .vtg-approach-grid { grid-template-columns: 1fr; }
  .vtg-footer__grid { grid-template-columns: 1fr 1fr; }
  .vtg-section { padding: 60px 0; }
}