/* ==========================================================================
   SIGMADEV DIGITAL - ULTRA-PREMIUM B2B ENGINEERING (v4.0.5)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-soft: #334155;
  --color-primary: #f8fafc;
  --color-accent: #6366f1; /* Indigo */
  --color-accent-hover: #4f46e5;
  --color-accent-glow: rgba(99, 102, 241, 0.4);
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-border: rgba(148, 163, 184, 0.15);
  
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 12px;
  --glass: rgba(15, 23, 42, 0.9);
  --glass-border: rgba(255, 255, 255, 0.08);
}

/* --- Base Reset --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-top: 80px;
  overflow-x: hidden;
}

h1, h2, h3, h4 { 
  font-family: var(--font-heading);
  font-weight: 700; 
  letter-spacing: -0.02em; 
  line-height: 1.1; 
  color: #fff;
  margin-bottom: 1.5rem;
}

h1 { font-weight: 800; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 8rem 0; position: relative; }
.bg-dark { background-color: var(--color-bg); }
.bg-surface { background-color: var(--color-surface); }

/* --- Glassmorphism --- */
.glass {
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
}

/* --- Modern Navigation --- */
.navbar {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  padding: 1.5rem 0;
  background: transparent;
  transition: var(--transition);
}

.navbar.scrolled { 
  padding: 0.8rem 0; 
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.navbar .container { display: flex; justify-content: space-between; align-items: center; }
.nav-brand { 
  font-family: var(--font-heading);
  font-size: 1.4rem; font-weight: 800; color: #fff; text-decoration: none; 
  letter-spacing: -0.04em; 
}
.nav-links { display: flex; gap: 2.5rem; align-items: center; }
.nav-link { 
  font-size: 0.9rem; font-weight: 500; color: var(--color-text-muted); text-decoration: none; 
  transition: var(--transition); letter-spacing: 0.01em; 
}
.nav-link:hover, .nav-link.active { color: #fff; }

/* --- Buttons --- */
.btn {
  display: inline-block; padding: 0.9rem 2.2rem;
  font-size: 0.85rem; font-weight: 600; border-radius: 8px;
  cursor: pointer; transition: var(--transition); text-decoration: none;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  text-align: center;
}
.btn-primary { 
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  color: #fff; 
  box-shadow: 0 4px 15px var(--color-accent-glow);
}
.btn-primary:hover { 
  transform: translateY(-2px); 
  box-shadow: 0 8px 25px var(--color-accent-glow);
  filter: brightness(1.1);
}
.btn-outline { 
  border: 1px solid var(--color-border); 
  color: #fff; 
  background: rgba(255,255,255,0.02);
}
.btn-outline:hover { 
  border-color: var(--color-accent); 
  background: rgba(99, 102, 241, 0.05); 
  transform: translateY(-2px);
}

/* --- Hero --- */
.hero { 
  padding: 12rem 0 8rem; 
  text-align: center; 
  position: relative;
}

.hero-glow {
  position: absolute;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  opacity: 0.2;
  z-index: -1;
  pointer-events: none;
}

.hero h1 { 
  font-size: clamp(3.5rem, 8vw, 5.5rem); 
  max-width: 1000px; margin: 0 auto 2rem; 
  line-height: 0.95; 
  letter-spacing: -0.05em;
}
.hero-lead { 
  font-size: 1.2rem; color: var(--color-text-muted); 
  max-width: 750px; margin: 0 auto 3.5rem; 
  font-weight: 400;
}

/* --- Grid & Cards --- */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; }
.feature-card {
  padding: 4rem 3rem; 
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(99, 102, 241, 0.4);
  background: rgba(30, 41, 59, 0.8);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.card-label { 
  font-size: 0.7rem; font-weight: 700; color: var(--color-accent); 
  text-transform: uppercase; margin-bottom: 1.5rem; display: block; letter-spacing: 0.2em; 
}
.feature-card h3 { font-size: 1.8rem; margin-bottom: 1.25rem; }
.feature-card p { color: var(--color-text-muted); font-size: 1rem; line-height: 1.7; }

/* --- Case Study Card --- */
.case-card {
  border-radius: 24px;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}
.case-image {
  height: 280px;
  background-size: cover;
  background-position: center;
  transition: var(--transition);
}
.case-content { padding: 3rem; }
.case-card:hover { transform: translateY(-8px); border-color: var(--color-accent); }
.case-card:hover .case-image { transform: scale(1.05); }

/* --- Journey Row --- */
.journey-row { 
  display: flex; 
  align-items: center; 
  gap: 6rem; 
}
.journey-content { flex: 1; }
.journey-image { 
  flex: 1; 
  border-radius: 32px; 
  overflow: hidden; 
  box-shadow: 0 30px 60px rgba(0,0,0,0.5);
  border: 1px solid var(--color-border);
}
.journey-image img { 
  width: 100%; 
  display: block; 
  transition: transform 1.5s ease;
}
.journey-image:hover img { transform: scale(1.08); }

/* --- Stats --- */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 4rem; }
.stat-item h4 { font-size: 1.25rem; color: #fff; margin-bottom: 0.25rem; }
.stat-item p { font-size: 0.85rem; color: var(--color-text-muted); }

/* --- Animations --- */
.reveal { opacity: 0; transform: translateY(30px); transition: var(--transition); }
.reveal-left { opacity: 0; transform: translateX(-40px); transition: var(--transition); }
.reveal-right { opacity: 0; transform: translateX(40px); transition: var(--transition); }

.reveal.active, .reveal-left.active, .reveal-right.active { 
  opacity: 1; 
  transform: translate(0, 0); 
}

/* --- Forms --- */
.form-group { margin-bottom: 2rem; }
.form-label { font-size: 0.85rem; font-weight: 600; color: #fff; margin-bottom: 0.75rem; display: block; }
.form-control {
  width: 100%; background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--color-border); border-radius: 8px;
  padding: 1.2rem; color: #fff; font-family: inherit; transition: var(--transition);
}
.form-control:focus { outline: none; border-color: var(--color-accent); background: rgba(30, 41, 59, 0.8); }

/* --- Footer --- */
.site-footer { 
  border-top: 1px solid var(--color-border); 
  padding: 6rem 0 3rem; 
  background: var(--color-bg);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 4rem; margin-bottom: 4rem; }
.footer-logo { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 800; margin-bottom: 1.5rem; display: block; letter-spacing: -0.04em; }
.footer-links h4 { font-size: 0.9rem; margin-bottom: 1.5rem; color: #fff; text-transform: uppercase; letter-spacing: 0.1em; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a { color: var(--color-text-muted); text-decoration: none; transition: var(--transition); font-size: 0.9rem; }
.footer-links a:hover { color: #fff; }

.footer-bottom { 
  border-top: 1px solid var(--color-border); 
  padding-top: 2rem; 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  font-size: 0.85rem; color: var(--color-text-muted); 
}

/* --- Scroll Progress --- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; background: var(--color-accent); z-index: 1001; transition: width 0.1s;
}

/* --- Overlay --- */
.overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(15, 23, 42, 0.9);
  display: flex; align-items: center; justify-content: center;
  z-index: 2000; opacity: 0; pointer-events: none; transition: var(--transition);
}
.overlay.active { opacity: 1; pointer-events: all; }
.overlay-content { padding: 4rem; border-radius: 24px; text-align: center; max-width: 500px; }

/* --- Grid Additions --- */
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* --- Premium Typography --- */
.gradient-text {
  background: linear-gradient(135deg, #fff, var(--color-text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Pricing Section --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  align-items: center;
}
.pricing-card {
  padding: 3rem 2.5rem;
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  position: relative;
  transition: var(--transition);
  backdrop-filter: blur(12px);
}
.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent-glow);
  background: rgba(30, 41, 59, 0.7);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.pricing-card.premium {
  background: rgba(30, 41, 59, 0.8);
  border-color: var(--color-accent);
  box-shadow: 0 10px 30px var(--color-accent-glow);
  transform: scale(1.05);
  padding: 4rem 2.5rem;
}
@media (max-width: 900px) {
  .pricing-card.premium { transform: scale(1); padding: 3rem 2.5rem; }
  .pricing-card.premium:hover { transform: translateY(-8px); }
}
.pricing-card.premium:hover {
  transform: scale(1.05) translateY(-8px);
}
.premium-badge {
  position: absolute;
  top: 0; left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  color: #fff;
  padding: 0.4rem 1.2rem;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.pricing-header h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.pricing-desc { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 2rem; min-height: 40px; }
.pricing-price { margin-bottom: 0.5rem; display: flex; align-items: baseline; }
.pricing-price .currency { font-size: 1.2rem; font-weight: 600; color: var(--color-text-muted); margin-right: 0.2rem; }
.pricing-price .amount { font-size: 3.5rem; font-weight: 800; color: #fff; font-family: var(--font-heading); line-height: 1; letter-spacing: -0.05em; }
.pricing-price .period { font-size: 0.9rem; color: var(--color-text-muted); margin-left: 0.5rem; }
.pricing-alt-price { font-size: 0.85rem; color: var(--color-accent); margin-bottom: 2rem; font-weight: 500; }
.pricing-features { list-style: none; margin-bottom: 3rem; }
.pricing-features li { 
  margin-bottom: 1rem; 
  color: var(--color-text); 
  font-size: 0.95rem; 
  display: flex; 
  align-items: center; 
}
.pricing-features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: bold;
  margin-right: 0.8rem;
}
.pricing-card .btn { width: 100%; }