/* Flat UI Colors */
:root {
    --turquoise: #1abc9c;
    --emerald: #2ecc71;
    --peter-river: #3498db;
    --amethyst: #9b59b6;
    --wet-asphalt: #34495e;
    --midnight-blue: #2c3e50;
    --sun-flower: #f1c40f;
    --carrot: #e67e22;
    --alizarin: #e74c3c;
    --clouds: #ecf0f1;
    --concrete: #95a5a6;
    --silver: #bdc3c7;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    background: linear-gradient(135deg, var(--peter-river), var(--amethyst));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.container {
    perspective: 1000px;
}

.card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 60px 80px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(0);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-5px) rotateX(5deg);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.title {
    font-size: 4rem;
    font-weight: 700;
    color: var(--wet-asphalt);
    margin-bottom: 10px;
    background: linear-gradient(45deg, var(--turquoise), var(--emerald));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 2s ease-in-out infinite alternate;
}

.subtitle {
    font-size: 1.4rem;
    color: var(--concrete);
    margin-bottom: 30px;
    opacity: 0;
    animation: fadeInUp 1s ease 0.5s both;
}

.pulse-dot {
    width: 20px;
    height: 20px;
    background: var(--turquoise);
    border-radius: 50%;
    margin: 0 auto;
    position: relative;
    animation: pulse 2s ease-in-out infinite;
}

.pulse-dot::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid var(--turquoise);
    border-radius: 50%;
    animation: ripple 2s ease-in-out infinite;
    opacity: 0;
}

@keyframes titleGlow {
    0% {
        filter: brightness(1);
    }
    100% {
        filter: brightness(1.2);
        text-shadow: 0 0 20px rgba(26, 188, 156, 0.3);
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

@keyframes ripple {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    50% {
        opacity: 0.3;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .card {
        padding: 40px 50px;
    }

    .title {
        font-size: 3rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .card {
        padding: 30px 40px;
        margin: 20px;
    }

    .title {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }
}