:root {
    /* Color palette */
    --primary: #1a73e8;
    --primary-dark: #0d47a1;
    --secondary: #5f6368;
    --accent: #fbbc04;
    --success: #34a853;
    --warning: #fbbc04;
    --error: #ea4335;
    --background: #ffffff;
    --surface: #f8f9fa;
    --border: #dadce0;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    
    /* Typography */
    --font-family: 'Roboto', 'Segoe UI', Arial, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    color: var(--text-primary);
    background-color: var(--surface);
    line-height: 1.6;
}

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

a:hover {
    text-decoration: underline;
}

/* ... (Keep existing :root, reset, body, a, input, modal styles as they are) ... */

button, .button {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 0.6em 1.2em; /* Keep this if you want it to be the default for non-small buttons */
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: var(--font-size-md);
    font-weight: 500;
    transition: background-color 0.3s ease;
    text-decoration: none;
    /* Ensure Bootstrap's focus/active states don't make them too large visually */
    line-height: 1.5; /* Often helps with vertical alignment and compactness */
}

button:hover, .button:hover {
    background-color: var(--primary-dark);
    text-decoration: none;
}

/* Strengthened Styles for DISABLED buttons */
button:disabled, .button:disabled,
.button[disabled], /* Target [disabled] attribute directly */
.btn:disabled, .btn[disabled] /* If Bootstrap's .btn class is also present */
{
    opacity: 0.5 !important; /* Force opacity for disabled state */
    cursor: not-allowed !important; /* Force cursor */
    box-shadow: none !important; /* Ensure no active/focus shadows */
    pointer-events: none; /* Prevent click events on disabled buttons completely */
}

/* ... (Keep existing login page, form, modal, responsive adjustments as they are) ... */

input, select, textarea {
    width: 100%;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
}

/* Login page styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--background);
}

.login-form {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-xl);
    background-color: white;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
}

.login-form h1 {
    margin-bottom: var(--spacing-lg);
    color: var(--primary);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.error-message {
    color: var(--error);
    background-color: rgba(234, 67, 53, 0.1);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-md);
    text-align: center;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .login-form {
        max-width: 90%;
        padding: var(--spacing-lg);
    }
}

/* Add this to assets/css/style.css */

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    overflow-y: auto;
    padding: 20px;
}

.modal-content {
    background-color: white;
    margin: 50px auto;
    padding: 2rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 100%;
    position: relative;
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.close-modal:hover {
    color: var(--text-primary);
}

.modal h2 {
    margin-top: 0;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

/* Form validation styles */
.invalid-input {
    border-color: var(--error) !important;
    background-color: rgba(234, 67, 53, 0.05);
}

.error-message {
    color: var(--error);
    font-size: var(--font-size-sm);
    margin-top: 0.25rem;
}

/* Responsive modal adjustments */
@media (max-width: 768px) {
    .modal-content {
        margin: 20px auto;
        padding: 1.5rem;
        max-width: 100%;
    }
}

/* Focus handling for accessibility */
.modal:focus-within {
    outline: none;
}

.modal-content:focus {
    outline: none;
}

.modal input:focus,
.modal select:focus,
.modal textarea:focus,
.modal button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Add these classes to support form layouts */
.form-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: #fff;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
}

.form-section h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
    color: var(--primary);
}

.wide-form {
    max-width: 1200px;
}