body {
    font-family: 'Fira Sans', sans-serif;
    background-color: #f8fafc;
}

.card-container {
    perspective: 1000px;
}

.card {
    transform-style: preserve-3d;
    transition: transform 0.6s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.input-effect {
    transition: all 0.3s ease;
}

.input-effect:focus {
    box-shadow: 0 0 0 3px rgba(104, 193, 143, 0.3);
}

.btn-hover {
    transition: all 0.5s ease;
    background-size: 200% auto;
    background-image: linear-gradient(to right, #48bb78 0%, #38a169 51%, #48bb78 100%);
}

.btn-hover:hover {
    background-position: right center;
    transform: translateY(-2px);
}

.floating-label {
    position: absolute;
    pointer-events: none;
    left: 10px;
    top: 12px;
    transition: 0.2s ease all;
    color: #9CA3AF;
    font-size: 13px;
}

input:focus ~ .floating-label,
input:not(:placeholder-shown) ~ .floating-label {
    top: -8px;
    left: 10px;
    font-size: 11px;
    background: white;
    padding: 0 5px;
    color: #38A169;
}

.logo {
    height: 100px;
    margin-bottom: 15px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
}

.password-strength {
    height: 4px;
    margin-top: 4px;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.strength-0 {
    width: 25%;
    background-color: #ef4444;
}

.strength-1 {
    width: 50%;
    background-color: #f59e0b;
}

.strength-2 {
    width: 75%;
    background-color: #3b82f6;
}

.strength-3 {
    width: 100%;
    background-color: #10b981;
}