:root {
  /* Core */
  --paper: #0B1020;           /* Deep navy background */
  --panel: #11162A;           /* Card surfaces */
  --ink: #F5F7FA;             /* Primary text */
  --ink-muted: rgba(245, 247, 250, 0.65);

  /* Accents */
  --accent: #1FA77E;          /* Emerald trust */
  --accent-soft: rgba(31, 167, 126, 0.18);

  /* Lines */
  --border: rgba(255, 255, 255, 0.08);
}

body {
  font-family: 'Inter', 'IBM Plex Sans', system-ui, sans-serif;
  background-color: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
  letter-spacing: -0.01em;
}

.serif {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
}
        
        /* Typography Scale */
.text-huge {
  font-size: clamp(2.2rem, 7vw, 4.8rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 700;
}
.bg-paper {
  background-color: var(--paper);
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
}
.editorial-border {
  border-color: var(--border);
}

.btn-editorial {
  position: relative;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink);
  padding: 0.9rem 1.5rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.25s ease;
}

.btn-editorial:hover {
  border-color: var(--accent);
  color: var(--accent);
}
@keyframes slideUpFade {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-editorial {
  animation: slideUpFade 0.6s ease-out forwards;
}
.search-overlay {
  backdrop-filter: blur(18px);
  background: rgba(11, 16, 32, 0.94);
}
.progress-bar {
  height: 4px;
  background: var(--accent-soft);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar span {
  display: block;
  height: 100%;
  background: var(--accent);
}

      /* Animation Keyframes */
        @keyframes slideUpFade {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
 
        .animate-editorial { animation: slideUpFade 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards; }

        /* Page Transitions */
        .page-view { display: none; }
        .page-view.active { display: block; }

        /* Custom Elements */
        .editorial-border { border-color: rgba(18, 18, 18, 0.1); }
        .bg-paper { background-color: var(--paper); }
        
        .search-overlay {
            backdrop-filter: blur(20px);
            background: rgba(249, 249, 247, 0.98);
        }

        /* Library (Cart) Toast */
        #library-toast {
            transform: translateY(100px);
            transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        #library-toast.show { transform: translateY(0); }

        .btn-editorial {
            position: relative;
            overflow: hidden;
            transition: all 0.4s ease;
        }
        .btn-editorial::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0; width: 0; height: 1px;
            background: currentColor;
            transition: width 0.4s ease;
        }
        .btn-editorial:hover::after { width: 100%; }