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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0d9488 0%, #14b8a6 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 450px;
}

.login-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.logo-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, #0d9488 0%, #14b8a6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    font-weight: bold;
    color: white;
    box-shadow: 0 8px 25px rgba(13, 148, 136, 0.4);
}

.login-card h1 {
    color: #0d9488;
    font-size: 2rem;
    margin-bottom: 30px;
    font-weight: 600;
}

.form-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-section.hidden {
    display: none;
}

.form-section h2 {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 10px;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 14px 18px;
    font-size: 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    outline: none;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
    border-color: #0d9488;
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

button {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    background: linear-gradient(135deg, #0d9488 0%, #14b8a6 100%);
    color: white;
    border: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(13, 148, 136, 0.3);
    margin-top: 10px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
}

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

.switch-text {
    margin-top: 15px;
    color: #666;
    font-size: 14px;
}

.switch-text span {
    color: #0d9488;
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
}

.switch-text span:hover {
    color: #14b8a6;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive Design */
@media (max-width: 600px) {
    .login-card {
        padding: 30px 25px;
    }

    .login-card h1 {
        font-size: 1.75rem;
    }

    .login-card img {
        width: 70px;
        height: 70px;
    }
}