/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(-45deg, #1e3c72, #2a5298, #0f2027, #203a43);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    color: #ffffff;
    padding: 20px;
}

/* Smooth Background Animation */
@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Card Container */
.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px;
    max-width: 450px;
    width: 100%;
    text-align: center;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.logo {
    font-size: 3rem;
    margin-bottom: 20px;
}

h1 {
    font-size: 2rem;
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

p {
    color: #b0b3b8;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 25px;
}

/* Pulse Status Indicator */
.status-container {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    margin-bottom: 30px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #00ff88;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 10px rgba(0, 255, 136, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 255, 136, 0);
    }
}

.status-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: #e4e6eb;
}

/* Interactive Button */
button {
    background: #ffffff;
    color: #1e3c72;
    border: none;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
}

button:hover {
    background: #e4e6eb;
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

/* Dynamic Message Styles */
#responseMessage {
    margin-top: 20px;
    margin-bottom: 0;
    font-size: 0.9rem;
    color: #00ff88;
    font-style: italic;
    transition: opacity 0.3s ease;
}

.hidden {
    opacity: 0;
}