:root {
    /* Google Material Colors */
    --google-blue: #1a73e8;
    /* Kept for reference or secondary elements if needed */
    --google-blue-hover: #1765cc;
    --google-red: #ea4335;
    --google-yellow: #fbbc04;
    --google-green: #0F9D58;
    /* New Primary */
    --google-green-hover: #0B8043;
    --google-gray-50: #f8f9fa;
    --google-gray-100: #f1f3f4;
    --google-gray-200: #e8eaed;
    --google-gray-300: #dadce0;
    --google-gray-600: #80868b;
    --google-gray-700: #5f6368;
    --google-gray-800: #3c4043;
    --google-gray-900: #202124;

    /* Semantic Mappings */
    --primary-color: var(--google-green);
    --primary-dark: var(--google-green-hover);
    --bg-body: var(--google-gray-50);
    --text-primary: var(--google-gray-900);
    --text-secondary: var(--google-gray-700);
    --border-color: var(--google-gray-300);

    /* Spacing & Radius */
    --border-radius-base: 8px;
    --border-radius-pill: 50rem;
    --shadow-1: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
    --shadow-2: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
}

body {
    background-color: var(--bg-body);
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Google Sans', 'Roboto', sans-serif;
    color: var(--text-primary);
}

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

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* --- Cards --- */
.card {
    border: 1px solid var(--google-gray-300);
    border-radius: var(--border-radius-base);
    box-shadow: none;
    background-color: #fff;
    margin-bottom: 24px;
}

/* Hover effect only if desired, Google Forms is usually static until interaction */
.card-hover:hover {
    box-shadow: var(--shadow-1);
}

.card-header-strip {
    height: 10px;
    background-color: var(--primary-color);
    border-top-left-radius: var(--border-radius-base);
    border-top-right-radius: var(--border-radius-base);
}

/* --- Buttons --- */
.btn {
    border-radius: 4px;
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0.25px;
    padding: 6px 16px;
    font-size: 0.875rem;
    transition: background-color 0.2s, box-shadow 0.2s;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: 0 1px 2px rgba(60, 64, 67, 0.3);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--google-gray-300);
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: rgba(15, 157, 88, 0.04);
    /* Light green tint */
    border-color: var(--google-gray-300);
    color: var(--primary-dark);
}

/* --- Form Controls (Material-ish) --- */
.form-control {
    border: 1px solid var(--google-gray-300);
    border-radius: 4px;
    padding: 10px 12px;
    color: var(--text-primary);
    transition: border-color 0.2s;
}

.form-control-lg {
    padding: 12px 20px;
    font-size: 1.1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: none;
    /* Remove Bootstrap glow */
    border-width: 2px;
    padding: 9px 11px;
    /* Adjust for border width change to prevent layout shift */
}

.form-control-lg:focus {
    padding: 11px 19px;
    /* Adjust for border width change to prevent layout shift */
}

/* Google Forms style specifically: Underline input (optional variant) */
.form-control-flushed {
    border: none;
    border-radius: 0;
    border-bottom: 1px solid var(--google-gray-300);
    background-color: #f5f5f5;
    /* Light gray filled */
    padding-top: 24px;
    padding-bottom: 8px;
}

.form-control-flushed:focus {
    border-bottom: 2px solid var(--primary-color);
    background-color: #e8eaed;
}

/* --- Navbar (Google App Bar) --- */
.navbar-google {
    background-color: #fff;
    box-shadow: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 2px 6px 2px rgba(60, 64, 67, 0.15);
    padding: 8px 16px;
}

.navbar-google .navbar-brand {
    font-family: 'Product Sans', 'Google Sans', Roboto, sans-serif;
    color: var(--google-gray-700);
    font-size: 22px;
    display: flex;
    align-items: center;
}

.navbar-google .nav-link {
    color: var(--google-gray-700) !important;
    font-weight: 500;
}

.navbar-google .nav-link:hover {
    color: var(--primary-color) !important;
}

.navbar-google .nav-link.active {
    color: var(--primary-color) !important;
}

/* --- Footer --- */
.footer-google {
    background-color: #f8f9fa;
    border-top: 1px solid var(--google-gray-300);
    color: var(--google-gray-600);
    font-size: 12px;
    padding: 24px 0;
}