/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
}

/* Hidden state for elements */
.hidden {
    display: none !important;
}

/* ===== LOADER STYLES ===== */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    animation: fadeIn 0.3s ease;
}

/* Spinner animation */
.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(102, 126, 234, 0.3);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loader-text {
    display: none;
}

/* ===== CTA FALLBACK STYLES ===== */
.cta-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    animation: fadeIn 0.5s ease;
}

.card {
    background: #fff;
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.card h1 {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 16px;
    line-height: 1.3;
}

.card p {
    font-size: 16px;
    color: #666;
    margin-bottom: 32px;
    line-height: 1.6;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 16px 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn:active {
    transform: translateY(0);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 480px) {
    .card {
        padding: 32px 24px;
    }

    .card h1 {
        font-size: 24px;
    }

    .card p {
        font-size: 15px;
    }

    .btn {
        font-size: 16px;
        padding: 14px 28px;
    }

    .spinner {
        width: 50px;
        height: 50px;
    }

    .loader-text {
        font-size: 16px;
    }
}