:root {
    --bg-color: #f8f9fa;
    --text-color: #333;
    --accent-color: #4a90e2;
    --error-color: #dc3545;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

.dark-theme {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --accent-color: #64b5f6;
    --error-color: #f44336;
    --border-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Arimo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.login-container {
    max-width: 500px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    box-shadow: 0 4px 20px var(--shadow-color);
    margin: 2rem auto;
    padding: 2rem;
}

h1, h2 {
    text-align: center;
    color: var(--text-color);
}

h1 {
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 1.2rem;
    font-weight: normal;
    margin-bottom: 2rem;
    opacity: 0.8;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

input[type="email"],
input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    font-size: 1rem;
}

button[type="submit"] {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

button[type="submit"]:hover {
    background-color: #357abd;
}

button[type="submit"]:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
}

p {
    margin-bottom: 1rem;
}

ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.error {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--error-color);
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--error-color);
}

.flash-message {
    background-color: rgba(255, 193, 7, 0.1);
    color: #ffc107;
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1.5rem;
    border-left: 4px solid #ffc107;
}

footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }
    
    .login-container {
        margin: 1rem;
    }
}