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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.login-box {
    background: rgba(0, 0, 0, 0.85);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    width: 350px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.login-box h2 {
    color: #fff;
    margin-bottom: 30px;
    font-size: 28px;
}

.login-box input {
    width: 100%;
    padding: 12px 15px;
    margin: 10px 0;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 16px;
    transition: 0.3s;
}

.login-box input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 10px rgba(51, 204, 51, 0.3);
}

.login-box input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.login-box input:read-only {
    background: rgba(255, 255, 255, 0.05);
    color: #0d95e5;
}

.login-box button {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.login-box button:first-of-type {
    background: #33cc33;
    color: #fff;
}

.login-box button:first-of-type:hover {
    background: #28a428;
    transform: translateY(-2px);
}

.login-box button:last-of-type {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.login-box button:last-of-type:hover {
    background: rgba(255, 255, 255, 0.2);
}

.error {
    color: #ff4444;
    margin-top: 15px;
    font-size: 14px;
}