@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
        
        body {
            background-color: #f8fafc;
            color: #0f172a;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .chart-container {
            position: relative;
            width: 100%;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            height: 350px;
            max-height: 450px;
        }

        .fade-in {
            animation: fadeIn 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .spinner {
            border: 4px solid rgba(37, 99, 235, 0.1);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border-left-color: #2563eb;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        /* Operator Logos CSS representations */
        .op-ezys {
            background: #d9248f; /* Ezys Magenta */
            color: white;
        }
        .op-pildyk {
            background: #ff6b00; /* Pildyk Orange/Yellow */
            color: white;
        }
        .op-labas {
            background: #00a651; /* Labas Green */
            color: white;
        }
        
        .operator-btn {
            transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
            transform: scale(1);
            min-height: 7.25rem;
        }
        .operator-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px -10px rgba(15, 23, 42, 0.2);
        }
        .operator-btn.selected {
            transform: scale(1.02);
            border-color: #2563eb;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
        }

        /* Abstract phone visual */
        .phone-mockup {
            width: 260px;
            height: 520px;
            background: #ffffff;
            border-radius: 40px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), inset 0 0 0 8px #cbd5e1;
            position: relative;
            overflow: hidden;
        }
        .phone-notch {
            position: absolute;
            top: 8px;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 25px;
            background: #cbd5e1;
            border-bottom-left-radius: 16px;
            border-bottom-right-radius: 16px;
            z-index: 10;
        }
        .phone-screen {
            position: absolute;
            top: 8px; left: 8px; right: 8px; bottom: 8px;
            border-radius: 32px;
            background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        
        .gradient-text {
            background: linear-gradient(135deg, #1d4ed8, #7c3aed);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .float-soft {
            animation: floatY 7s ease-in-out infinite;
        }
        @keyframes floatY {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        .reveal-up {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
        }
        .reveal-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .stagger-children > * {
            opacity: 0;
            transform: translateY(20px);
            animation: staggerIn 0.55s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
        }
        .stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
        .stagger-children > *:nth-child(2) { animation-delay: 0.12s; }
        .stagger-children > *:nth-child(3) { animation-delay: 0.19s; }
        .stagger-children > *:nth-child(4) { animation-delay: 0.26s; }
        .stagger-children > *:nth-child(5) { animation-delay: 0.33s; }
        .stagger-children > *:nth-child(6) { animation-delay: 0.4s; }
        @keyframes staggerIn {
            to { opacity: 1; transform: translateY(0); }
        }

        .op-telia { background: linear-gradient(135deg, #5b21b6, #7c3aed); color: white; }
        .op-tele2 { background: linear-gradient(135deg, #ea580c, #f97316); color: white; }
        .op-bite { background: linear-gradient(135deg, #047857, #10b981); color: white; }

        .mno-pill {
            transition: transform 0.35s ease, box-shadow 0.35s ease;
        }
        .mno-pill:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 12px 28px -8px rgba(29, 78, 216, 0.35);
        }