html { scroll-behavior: smooth; }
        body { font-family: 'Inter', sans-serif; overflow-x: hidden; }
        .gradient-text {
            background: linear-gradient(135deg, #FF5A1F, #FF6B35, #FF3D00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gradient-bg {
            background: linear-gradient(135deg, #FF5A1F, #FF6B35, #FF3D00);
            background-size: 200% 200%;
        }
        .glass {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .card-hover {
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-8px);
            box-shadow: 0 25px 50px -12px rgba(255, 90, 31, 0.15);
        }
        .btn-primary {
            background: linear-gradient(135deg, #FF5A1F, #FF6B35, #FF3D00);
            background-size: 200% 200%;
            transition: all 0.3s ease;
        }
        /* Make primary buttons larger and more tappable */
        .btn-primary {
            padding: 1rem 2.25rem !important;
            font-size: 1.125rem !important;
            min-height: 56px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .btn-primary:hover {
            background-position: 100% 0;
            transform: translateY(-2px);
            box-shadow: 0 20px 40px -10px rgba(255, 90, 31, 0.4);
        }
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }
        .stagger-1 { transition-delay: 0.1s; }
        .stagger-2 { transition-delay: 0.2s; }
        .stagger-3 { transition-delay: 0.3s; }
        .stagger-4 { transition-delay: 0.4s; }
        .stagger-5 { transition-delay: 0.5s; }
        .stagger-6 { transition-delay: 0.6s; }
        .blob {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.4;
            pointer-events: none;
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out, padding 0.4s ease;
        }
        .accordion-content.open {
            max-height: 300px;
        }
        .scroll-indicator {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            background: linear-gradient(90deg, #FF5A1F, #FF6B35, #FF3D00);
            z-index: 9999;
            transition: width 0.1s ease;
        }
        .floating-fab {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 100;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FF5A1F, #FF6B35, #FF3D00);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            box-shadow: 0 8px 30px rgba(255, 90, 31, 0.4);
            cursor: pointer;
            transition: all 0.3s ease;
            animation: pulseGlow 2s ease-in-out infinite;
        }
        .floating-fab:hover {
            transform: scale(1.1);
            box-shadow: 0 12px 40px rgba(255, 90, 31, 0.6);
        }
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            backdrop-filter: blur(8px);
            z-index: 9998;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .modal-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }
        .modal-content {
            background: white;
            border-radius: 24px;
            padding: 40px;
            max-width: 420px;
            width: 90%;
            transform: scale(0.9) translateY(20px);
            transition: transform 0.3s ease;
            box-shadow: 0 40px 80px -20px rgba(0,0,0,0.3);
            position: relative;
        }
        .modal-overlay.active .modal-content {
            transform: scale(1) translateY(0);
        }
        .book-mockup {
            width: 280px;
            height: 380px;
            background: linear-gradient(145deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            border-radius: 4px 12px 12px 4px;
            position: relative;
            box-shadow:
                -15px 15px 40px rgba(0,0,0,0.4),
                -5px 5px 15px rgba(0,0,0,0.2),
                inset 2px 0 5px rgba(255,255,255,0.1);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 30px;
            text-align: center;
            margin: 0 auto;
        }
        .book-mockup::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 12px;
            background: linear-gradient(to right, #0a0a1a, #1a1a2e);
            border-radius: 4px 0 0 4px;
            box-shadow: inset -2px 0 4px rgba(0,0,0,0.5);
        }
        .book-mockup::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 20px;
            right: -10px;
            height: 20px;
            background: rgba(0,0,0,0.15);
            filter: blur(15px);
            border-radius: 50%;
        }
        .book-spine {
            position: absolute;
            left: 4px;
            top: 0;
            bottom: 0;
            width: 8px;
            background: linear-gradient(to right, rgba(255,255,255,0.05), rgba(255,255,255,0.15), rgba(255,255,255,0.05));
            border-radius: 2px;
        }
        .book-ribbon {
            position: absolute;
            bottom: -12px;
            right: 30px;
            width: 30px;
            height: 50px;
            background: linear-gradient(135deg, #FF5A1F, #FF3D00);
            clip-path: polygon(0 0, 100% 0, 100% 75%, 50% 100%, 0 75%);
            box-shadow: 0 4px 10px rgba(255, 90, 31, 0.4);
        }
        .book-icon {
            font-size: 64px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FF5A1F, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .book-title {
            font-family: 'Poppins', sans-serif;
            font-weight: 700;
            font-size: 22px;
            line-height: 1.3;
            color: white;
            margin-bottom: 8px;
        }
        .book-subtitle {
            font-family: 'Inter', sans-serif;
            font-weight: 300;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            letter-spacing: 2px;
            text-transform: uppercase;
        }
        .book-author {
            margin-top: 30px;
            font-size: 12px;
            color: rgba(255,255,255,0.5);
        }
        .lang-toggle {
            display: inline-flex;
            align-items: center;
            background: rgba(255,255,255,0.9);
            border: 1px solid rgba(255,90,31,0.2);
            border-radius: 9999px;
            padding: 4px;
            gap: 2px;
            cursor: pointer;
        }
        .lang-toggle button {
            padding: 6px 14px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            background: transparent;
            color: #6b7280;
            cursor: pointer;
        }
        .lang-toggle button.active {
            background: linear-gradient(135deg, #FF5A1F, #FF6B35);
            color: white;
            box-shadow: 0 2px 8px rgba(255,90,31,0.3);
        }
        .shine {
            position: relative;
            overflow: hidden;
        }
        .shine::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0) 100%);
            transform: rotate(30deg);
            animation: shine 6s infinite;
        }
        @keyframes shine {
            0% { left: -100%; }
            20% { left: 100%; }
            100% { left: 100%; }
        }

/* ============================================================
   The section below is ADDED for checkout.html (screenshot-based
   CBE / Telebirr payment page). Nothing above this line has been
   changed from the original reference style.css.
   ============================================================ */

.step-badge {
    width: 32px; height: 32px; border-radius: 9999px;
    background: linear-gradient(135deg, #FF5A1F, #FF6B35, #FF3D00);
    color: white; font-weight: 700; font-size: 14px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.bump-box {
    border: 2px dashed #FF5A1F;
    background: linear-gradient(135deg, rgba(255,90,31,0.06), rgba(255,61,0,0.04));
    border-radius: 1rem;
}
.bump-box.active {
    border-style: solid;
    box-shadow: 0 10px 30px -10px rgba(255,90,31,0.35);
}
.pay-option {
    border: 2px solid #e5e7eb;
    border-radius: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}
.pay-option:hover { border-color: #FF6B35; }
.pay-option.selected {
    border-color: #FF5A1F;
    background: linear-gradient(135deg, rgba(255,90,31,0.06), rgba(255,61,0,0.04));
    box-shadow: 0 10px 30px -12px rgba(255,90,31,0.3);
}
.copy-chip {
    font-family: 'Inter', monospace, sans-serif;
    letter-spacing: 0.5px;
}
.upload-drop {
    border: 2px dashed #d1d5db;
    border-radius: 1rem;
    transition: all 0.2s ease;
}
.upload-drop.drag-over, .upload-drop.has-file { border-color: #FF5A1F; background: rgba(255,90,31,0.04); }

.spinner {
    width: 20px; height: 20px; border-radius: 9999px;
    border: 3px solid rgba(255,255,255,0.4);
    border-top-color: white;
    animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }