body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    background: linear-gradient(to right, #000000, #181f38, #0a1226);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #fff;
}

.login-container {
    margin-bottom: -55px;
    width: 90%;
    max-width: 1000px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-box {
    width: 100%;
    display: flex;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    border: 10px solid #fff;
}

.left-panel, .right-panel {
    flex: 1;
    padding: 2rem;
    box-sizing: border-box;
}

.left-panel {
    background: #003366;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
}

.welcome-message {
    padding: 2rem;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

.welcome-message h1 {
    font-size: 2em;
    margin: 0;
    font-weight: bold;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.welcome-message i {
    font-size: 1.2em;
    margin: 0 0.5em;
}

#theme-toggle-btn {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: #fff;
    color: #003366;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

#theme-toggle-btn:hover {
    background: #ddd;
}

.weather-widget {
    position: absolute;
    top: 15px;
    right: 30px;
    color: #fff;
    font-size: 1.2em;
    display: flex;
    align-items: center;
    background-color: rgba(51, 51, 51, 0.5);
    border-radius: 5px;
    padding: 5px;
    font-family: monospace;
}

.weather-widget i {
    margin-right: 10px;
}

.login-form {
    max-width: 400px;
    margin: 0 auto;
}

.login-form h2 {
    font-size: 2em;
    margin-bottom: 1em;
    color: #003366;
}

.form-group {
    margin-bottom: 1.5em;
}

label {
    display: block;
    margin-bottom: 0.5em;
    color: #003366;
}

input[type=email], input[type=password] {
    width: 100%;
    padding: 12px 20px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
    color: #333;
}

input[type=email]:focus, input[type=password]:focus {
    border-color: #007bff;
    outline: none;
}

.btn {
    width: 100%;
    padding: 14px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease, transform 0.3s ease;
    margin: 5px 0;
}

.primary-btn {
    background-color: #28a745;
}

.btn:hover {
    background-color: #0056b3;
    transform: scale(1.02);
}

.primary-btn:hover {
    background-color: #218838;
}

.error-message {
    color: red;
    margin-bottom: 1em;
}

body.dark-mode {
    background: #000000;
    color: #ddd;
}

body.dark-mode .login-container {
    background: #333;
}

body.dark-mode .left-panel {
    background: #720606;
}

body.dark-mode .right-panel {
    background: #363535;
}

body.dark-mode .welcome-message {
    background: rgba(0, 0, 0, 0.1);
}

body.dark-mode .login-form h2 {
    color: #fff;
}

body.dark-mode label {
    color: #fff;
}

body.dark-mode input[type=email], 
body.dark-mode input[type=password] {
    background: #d6d6d6;
    color: #fff;
    border: 1px solid #555;
}

body.dark-mode input[type=email]:focus, 
body.dark-mode input[type=password]:focus {
    border-color: #007bff;
    outline: none;
}

body.dark-mode .btn {
    background-color: #3688f4;
    color: #fff;
}

body.dark-mode .primary-btn {
    background-color: #3b0909;
}

body.dark-mode .btn:hover {
    background-color: #2c0505;
}

body.dark-mode .primary-btn:hover {
    background-color: #340707;
}

@media (max-width: 992px) {
    .login-container {
        flex-direction: column;
        width: 100%;
    }

    .login-box {
        flex-direction: column;
    }

    .left-panel, .right-panel {
        flex: none;
        width: 100%;
    }

    .left-panel {
        padding: 1rem;
    }

    .right-panel {
        padding: 1rem;
    }

    .welcome-message h1 {
        font-size: 1.8em;
    }

    .login-form {
        max-width: 90%;
    }

    .login-form h2 {
        font-size: 1.8em;
    }

    #theme-toggle-btn {
        margin-top: 0.5rem;
        padding: 0.4rem 0.8rem;
    }
}

@media (max-width: 768px) {
    .login-container {
        flex-direction: column;
        width: 100%;
    }

    .login-box {
        flex-direction: column;
    }

    .left-panel, .right-panel {
        flex: none;
        width: 100%;
    }

    .left-panel {
        padding: 1rem;
    }

    .right-panel {
        padding: 1rem;
    }

    .welcome-message h1 {
        font-size: 1.8em;
    }

    .login-form {
        max-width: 90%;
    }

    .login-form h2 {
        font-size: 1.8em;
    }

    #theme-toggle-btn {
        margin-top: 0.5rem;
        padding: 0.4rem 0.8rem;
    }

    .weather-widget {
        position: static;
        margin-bottom: 1rem;
    }
}

@media (max-width: 576px) {
    .weather-widget {
        font-size: 1em;
        padding: 3px;
    }

    .welcome-message h1 {
        font-size: 1.5em;
    }

    .login-form h2 {
        font-size: 1.5em;
    }

    .btn {
        padding: 10px;
        font-size: 0.9em;
    }

    .primary-btn {
        padding: 10px;
        font-size: 0.9em;
    }
}