@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500&display=swap');

body {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: #ffffff;
    font-family: 'Roboto', sans-serif;
    overflow-x: hidden;
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    max-width: 500px;
    width: 90%;
    padding: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.card-title {
    font-weight: 500;
    color: #00e676;
    text-align: center;
}

.btn {
    background: linear-gradient(45deg, #00e676, #00c853);
    border-radius: 25px;
    text-transform: none;
    font-weight: 500;
    letter-spacing: 1px;
    transition: background 0.3s ease, transform 0.2s ease;
}

.btn:hover {
    background: linear-gradient(45deg, #00c853, #00e676);
    transform: scale(1.05);
}

.input-field input {
    color: #ffffff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    transition: border-bottom 0.3s ease;
}

.input-field input:focus {
    border-bottom: 1px solid #00e676;
    box-shadow: 0 1px 0 0 #00e676;
}

.input-field label {
    color: rgba(255, 255, 255, 0.7);
}

.input-field input:focus + label {
    color: #00e676;
}

.tabs {
    background: transparent;
}

.tabs .tab a {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
    transition: color 0.3s ease;
}

.tabs .tab a:hover, .tabs .tab a.active {
    color: #00e676;
}

.tabs .indicator {
    background-color: #00e676;
}

.error {
    color: #ff4444;
    text-align: center;
    margin-bottom: 10px;
}

@media (max-width: 600px) {
    .container {
        padding: 10px;
    }
    .card {
        border-radius: 10px;
    }
    .btn {
        width: 100%;
    }
}