:root {
    /* --- NEW: Light Theme Palette --- */
    --bg-page: #f6f8fa;
    --bg-card: #ffffff;
    --border-color: #d0d7de;
    --text-primary: #1f2328;
    --text-secondary: #57606a;
    --input-bg: #ffffff;

    /* --- Using accent colors from your dashboard for consistency --- */
    --accent-blue: #0969da;
    --accent-blue-hover: #0a7ff9;
    --accent-red: #d73a49;

    --border-radius: 8px;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-page);     /* Changed */
    color: var(--text-primary);           /* Changed */
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container {
    width: 90%; /* Changed from 100% */
    max-width: 380px;
    padding: 40px;
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.07);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 8px;
}

.login-header p {
    font-size: 14px;
    color: var(--text-secondary);         /* Changed */
    margin: 0;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);         /* Changed */
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    background-color: var(--input-bg);    /* Changed */
    border: 1px solid var(--border-color);  /* Changed */
    border-radius: 6px;
    color: var(--text-primary);           /* Changed */
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.3); /* Updated shadow color */
}

.submit-btn {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background-color: var(--accent-blue);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.submit-btn:hover {
    background-color: var(--accent-blue-hover);
}

.error-message {
    color: var(--accent-red);
    font-size: 14px;
    text-align: center;
    margin-top: 20px;
    min-height: 20px;
}

@media (max-width: 480px) {
    .login-container {
        padding: 20px; /* Reduce padding on mobile */
        width: 95%;
    }

    .login-header h1 {
        font-size: 20px;
    }
}