/* Arbisoft Open Source Team - Dark Deck Design System */

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

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: 'Inter', sans-serif;
  background: #0f172a;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-container {
  position: relative;
  width: 1280px;
  height: 720px;
  overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.slide-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.grid-pattern {
  position: absolute;
  top: 0; left: 0;
  width: 1280px;
  height: 720px;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.header {
  position: absolute;
  top: 40px; left: 60px;
  width: 1160px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
}
.logo { display: flex; align-items: center; gap: 14px; }
.logo-mark {
  height: 34px;
  width: auto;
  filter: brightness(0) invert(1);
}
.logo-divider {
  width: 1px; height: 24px;
  background: rgba(255,255,255,0.2);
}
.logo-subtext { font-size: 14px; color: #94a3b8; line-height: 1.2; font-weight: 500; }
/* backwards-compat for any remaining .logo-icon/.logo-text usage */
.logo-icon { display: none; }
.logo-text { display: none; }

.nav-dots { display: flex; gap: 12px; }
.nav-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.2); }
.nav-dot.active { background: #3b82f6; box-shadow: 0 0 10px rgba(59, 130, 246, 0.5); }

.footer {
  position: absolute;
  top: 640px; left: 60px;
  width: 1160px; height: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
}
.footer-left, .footer-right { display: flex; align-items: center; gap: 16px; }
.footer-text { font-size: 16px; color: #64748b; letter-spacing: 0.05em; }
.page-indicator { font-size: 16px; color: #64748b; }
.page-number { color: #f8fafc; font-weight: 600; }
.nav-btn {
  width: 40px; height: 40px;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #94a3b8;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-btn:hover {
  background: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
  border-color: rgba(59, 130, 246, 0.4);
}
.nav-btn.disabled { opacity: .3; pointer-events: none; }

/* Floating presentation nav (fixed to viewport) */
.deck-nav-float {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(59, 130, 246, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  width: 56px; height: 56px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  text-decoration: none;
  transition: background .15s, transform .15s, opacity .2s;
  opacity: .5;
  user-select: none;
}
.deck-nav-float:hover { background: #3b82f6; opacity: 1; transform: translateY(-50%) scale(1.1); }
.deck-nav-float.prev { left: 20px; }
.deck-nav-float.next { right: 20px; }
.deck-nav-float.disabled { opacity: .15; pointer-events: none; }
body:hover .deck-nav-float { opacity: .85; }
@media print { .deck-nav-float { display: none !important; } }

/* === Content primitives === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 20px;
  color: #3b82f6;
  font-size: 16px;
  font-weight: 600;
}

.title {
  font-size: 80px;
  font-weight: 800;
  color: #f8fafc;
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.title-accent {
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 24px;
  color: #94a3b8;
  line-height: 1.5;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
}
.stat-icon {
  width: 48px; height: 48px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #3b82f6;
  font-size: 20px;
  flex-shrink: 0;
}
.stat-content { text-align: left; }
.stat-value { font-size: 24px; font-weight: 700; color: #f8fafc; }
.stat-label { font-size: 14px; color: #94a3b8; }

.tech-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  font-size: 16px;
  color: #cbd5e1;
}
.tech-item i { color: #3b82f6; }

@media print {
  body { display: block; }
  .slide-container { width: 1280px; height: 720px; }
}