* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
}

body {
    background-color: #f7f7f7;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-card {
    background: white;
    width: 400px;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-circle {
    width: 60px;
    height: 60px;
    background-color: #45D9D5;
    border-radius: 50%;
    color: white;
    font-size: 28px;
    font-weight: 700;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

.title {
    font-size: 22px;
    color: #555;
    margin-bottom: 5px;
    font-weight: 500;
}

.subtitle {
    font-size: 13px;
    color: #999;
    margin-bottom: 30px;
}

form {
    width: 100%;
}

.input-group {
    margin-bottom: 20px;
    position: relative;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 8px 12px;
    background: #fafafa;
}

.input-group label {
    position: absolute;
    top: -10px;
    left: 10px;
    background: white;
    padding: 0 5px;
    font-size: 12px;
    color: #777;
}

.input-group input {
    width: 100%;
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    color: #333;
    padding: 5px 0;
}

.error-message {
    color: #e74c3c;
    font-size: 13px;
    margin-bottom: 15px;
    text-align: center;
    min-height: 15px;
}

.submit-btn {
    width: 100%;
    background-color: #45D9D5;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 12px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #3bc2be;
}
.submit-btn:disabled {
    background-color: #9ae2e0;
    cursor: not-allowed;
}