* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 20px;
    color: #fff;
}

.container {
    max-width: 800px;
    width: 100%;
    text-align: center;
}

header {
    margin-bottom: 40px;
    animation: fadeInDown 1s ease;
}

h2 {
    font-size: 2rem;
    color: white;
    text-shadow: 0 0 15px rgba(0, 195, 255, 0.7);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.3rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.card {
    background: rgba(30, 30, 50, 0.8);
    border: #2575fc;
    border-radius: 20px;
    padding: 40px;
    padding-top: 10px;
    padding-bottom: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(10px);
    transform-style: preserve-3d;
    transform: perspective(1000px);
    animation: cardAppear 1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transition: transform 0.4s;
}

.card:hover {
    transform: perspective(1000px) translateY(-10px) rotateX(5deg);
}

.input-group {
    display: flex;
    margin: 30px 0;
    gap: 15px;
}

.input-field {
    flex: 1;
    padding: 18px 25px;
    font-size: 1.1rem;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    outline: none;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.input-field:focus {
    border-color: #6a11cb;
    box-shadow: 0 5px 15px rgba(106, 17, 203, 0.2);
}

.copy-btn {
    background: linear-gradient(to right, #6a11cb, #2575fc);
    color: white;
    border: none;
    padding: 0 35px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 8px 20px rgba(106, 17, 203, 0.4);
}

.copy-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(106, 17, 203, 0.5);
}

.copy-btn:active {
    transform: translateY(0);
    box-shadow: 0 5px 15px rgba(106, 17, 203, 0.4);
}

.copy-btn.copied {
    background: linear-gradient(to right, #00b09b, #96c93d);
}

.copy-btn.copied i {
    animation: bounce 0.6s;
}

.features {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-top: 40px;
    gap: 20px;
}

.feature {
    background: white;
    border-radius: 15px;
    padding: 25px;
    width: 390px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.feature:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature i {
    font-size: 2.5rem;
    background: linear-gradient(to right, #6a11cb, #2575fc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 15px;
}

.feature h3 {
    color: #333;
    margin-bottom: 10px;
}

.feature p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

.notification {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 500;
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 1000;
}

.notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: perspective(1000px) translateY(50px) rotateX(30deg);
    }
    to {
        opacity: 1;
        transform: perspective(1000px) translateY(0) rotateX(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
    40% {transform: translateY(-15px);}
    60% {transform: translateY(-7px);}
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .card {
        padding: 30px 20px;
    }
    
    .feature {
        width: 100%;
        max-width: 300px;
    }
}