/* Flat 2.0 Design for Fleischner Guidelines Tool */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, var(--night) 0%, var(--rich-black) 100%);
    color: var(--platinum);
    line-height: 1.6;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.sticky-footer {
    text-align: center;
    padding: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    background: var(--bg-primary);
    border-top: 1px solid rgba(48, 250, 181, 0.1);
    margin-top: auto;
}

.tool-container {
    max-width: 1000px;
    width: 100%;
    background: var(--rich-black);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 
        0 20px 40px rgba(0,0,0,0.4),
        0 0 0 1px rgba(48, 250, 181, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: none;
    margin: auto;
}

h1 {
    text-align: center;
    color: var(--aquamarine);
    margin-bottom: 8px;
    font-size: 2.2em;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(48, 250, 181, 0.3);
    letter-spacing: -0.02em;
}

h2 {
    text-align: center;
    color: var(--ash-gray);
    font-size: 1.1em;
    margin-top: 0;
    margin-bottom: 40px;
    font-weight: 400;
    opacity: 0.9;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

fieldset {
    background: var(--night);
    border: none;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 
        0 4px 16px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(48, 250, 181, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

fieldset::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--aquamarine), var(--jungle-green));
    opacity: 0.6;
}

fieldset:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 24px rgba(0,0,0,0.3),
        inset 0 1px 0 rgba(48, 250, 181, 0.2);
}

legend {
    font-weight: 700;
    color: var(--aquamarine);
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--rich-black), var(--night));
    border-radius: 2px;
    border: 1px solid rgba(48, 250, 181, 0.3);
    font-size: 0.95em;
    letter-spacing: 0.02em;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.radio-group label {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--rich-black), rgba(35, 38, 38, 0.8));
    color: var(--platinum);
    padding: 16px 20px;
    border-radius: 10px;
    cursor: pointer;
    border: 1px solid rgba(213, 219, 219, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    font-weight: 500;
}

.radio-group label::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(48, 250, 181, 0.1), transparent);
    transition: left 0.6s ease;
}

.radio-group label:hover {
    border-color: var(--aquamarine);
    background: linear-gradient(135deg, var(--night), rgba(25, 28, 28, 0.9));
    transform: translateX(4px);
    box-shadow: 
        0 4px 12px rgba(0,0,0,0.2),
        -4px 0 0 0 var(--aquamarine);
}

.radio-group label:hover::before {
    left: 100%;
}

.radio-group input[type="radio"] {
    margin-right: 16px;
    accent-color: var(--aquamarine);
    transform: scale(1.2);
    transition: transform 0.2s ease;
}

.radio-group input[type="radio"]:checked + span,
.radio-group label:has(input[type="radio"]:checked) {
    background: linear-gradient(135deg, var(--jungle-green), var(--aquamarine));
    border-color: var(--jungle-green);
    color: var(--night);
    font-weight: 600;
    box-shadow: 
        0 6px 20px rgba(34, 191, 141, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transform: translateX(6px);
}

.radio-group input[type="radio"]:checked {
    transform: scale(1.3);
}

button {
    background: linear-gradient(135deg, var(--aquamarine), var(--jungle-green));
    color: var(--night);
    border: none;
    padding: 18px 40px;
    font-size: 1.1em;
    font-weight: 700;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin: 32px auto 0;
    display: block;
    width: fit-content;
    position: relative;
    overflow: hidden;
    min-width: 200px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    box-shadow: 
        0 8px 24px rgba(34, 191, 141, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

button:hover {
    background: linear-gradient(135deg, var(--jungle-green), var(--bronze));
    transform: translateY(-3px) scale(1.02);
    box-shadow: 
        0 12px 32px rgba(34, 191, 141, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

button:hover::before {
    left: 100%;
}

button:active {
    transform: translateY(-1px) scale(1);
    box-shadow: 
        0 4px 12px rgba(34, 191, 141, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

button:focus {
    outline: none;
    box-shadow: 
        0 12px 32px rgba(34, 191, 141, 0.4),
        0 0 0 3px rgba(48, 250, 181, 0.3);
}

.result-container {
    background: linear-gradient(135deg, var(--night), rgba(35, 38, 38, 0.9));
    border-radius: 16px;
    padding: 32px;
    margin-top: 32px;
    border: 1px solid rgba(48, 250, 181, 0.2);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 
        0 10px 30px rgba(0,0,0,0.3),
        inset 0 1px 0 rgba(48, 250, 181, 0.1);
    position: relative;
    overflow: hidden;
}

.result-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--aquamarine), var(--jungle-green), var(--bronze));
}

.result-container h3 {
    color: var(--aquamarine);
    margin-bottom: 16px;
    font-size: 1.4em;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(48, 250, 181, 0.3);
    margin-top: 0;
}

.result-container p {
    color: var(--platinum);
    line-height: 1.7;
    margin-bottom: 12px;
    font-size: 1.05em;
}

.result-container strong {
    color: var(--jungle-green);
    font-weight: 600;
}

#result {
    display: none;
    animation: fadeInUp 0.6s ease-out;
}

#result-container {
    margin-top: 20px;
    padding: 20px;
    background-color: var(--night);
    border: 1px solid var(--aquamarine);
    border-left: 5px solid var(--aquamarine);
    border-radius: 5px;
}

#recommendation {
    font-weight: 700;
    font-size: 1.2em;
    color: var(--platinum);
    padding: 20px;
    background: linear-gradient(135deg, rgba(48, 250, 181, 0.1), rgba(34, 191, 141, 0.05));
    border-radius: 12px;
    border-left: 4px solid var(--aquamarine);
    margin-bottom: 16px;
}

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

.hidden {
    display: none;
}

/* Back button with enhanced flat 2.0 styling */
.back-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    background: linear-gradient(135deg, var(--aquamarine), var(--jungle-green));
    color: var(--night);
    padding: 18px 40px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    text-decoration: none;
    z-index: 1000;
    font-size: 1.1em;
    font-family: inherit;
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 8px 24px rgba(48, 250, 181, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    overflow: hidden;
}

.back-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.back-btn:hover {
    background: linear-gradient(135deg, var(--jungle-green), var(--bronze));
    transform: translateY(-3px) scale(1.02);
    box-shadow: 
        0 12px 32px rgba(48, 250, 181, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.back-btn:hover::before {
    left: 100%;
}

.back-btn:active {
    transform: translateY(-1px) scale(1);
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    fieldset {
        padding: 20px;
    }
    
    .radio-group label {
        padding: 14px 16px;
        font-size: 0.95em;
    }
    
    button {
        width: 100%;
        margin: 24px 0 0;
        padding: 16px 24px;
        min-width: unset;
        font-size: 1em;
        text-transform: uppercase;
        letter-spacing: 0.02em;
    }
    
    .result-container {
        padding: 24px;
        margin-top: 24px;
    }
    
    .back-btn {
        padding: 10px 16px;
        font-size: 14px;
        font-weight: 600;
        text-transform: none;
        letter-spacing: normal;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 16px;
    }
    
    fieldset {
        padding: 16px;
        margin-bottom: 16px;
    }
    
    legend {
        font-size: 0.9em;
        padding: 6px 12px;
    }
    
    .radio-group {
        gap: 8px;
    }
    
    .radio-group label {
        padding: 12px 14px;
        font-size: 0.9em;
    }
    
    .result-container {
        padding: 20px;
    }
    
    .result-container h3 {
        font-size: 1.2em;
    }
    
    .result-container p {
        font-size: 1em;
    }
    
    .back-btn {
        top: 10px;
        left: 10px;
        padding: 6px 10px;
        font-size: 12px;
    }
}

#comments {
    margin-top: 16px;
    font-style: italic;
    color: var(--ash-gray);
    padding: 16px;
    background: rgba(213, 219, 219, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--ash-gray);
    line-height: 1.6;
}

.footer-notes {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--ash-gray);
    font-size: 0.85em;
    color: var(--ash-gray);
}

.footer-notes p:last-child {
    text-align: center;
}

.footer-notes strong {
    color: var(--aquamarine);
}

/* Enhanced hyperlink styling for consistent design */
.footer-notes a {
    display: inline-block;
    background: linear-gradient(135deg, var(--aquamarine), var(--jungle-green));
    color: var(--night);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 3px 10px rgba(34, 191, 141, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    margin: 4px 0;
    letter-spacing: 0.01em;
}

.footer-notes a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.footer-notes a:hover {
    background: linear-gradient(135deg, var(--jungle-green), var(--bronze));
    transform: translateY(-2px);
    box-shadow: 
        0 6px 16px rgba(34, 191, 141, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    color: var(--night);
}

.footer-notes a:hover::before {
    left: 100%;
}

.footer-notes a:active {
    transform: translateY(0);
    box-shadow: 
        0 2px 6px rgba(34, 191, 141, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.footer-notes a:focus {
    outline: none;
    box-shadow: 
        0 6px 16px rgba(34, 191, 141, 0.4),
        0 0 0 3px rgba(48, 250, 181, 0.3);
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    body {
        padding: 15px 10px;
        line-height: 1.5;
    }
    
    .tool-container {
        padding: 20px 15px;
        margin: 0;
        border-radius: 6px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    }
    
    h1 {
        font-size: 1.5rem;
        margin-bottom: 8px;
        line-height: 1.2;
    }
    
    h2 {
        font-size: 1rem;
        margin-bottom: 20px;
        line-height: 1.3;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    fieldset {
        padding: 12px;
        margin-bottom: 15px;
        border-radius: 4px;
    }
    
    legend {
        font-size: 0.95rem;
        padding: 0 8px;
        font-weight: 700;
    }
    
    .radio-group label {
        padding: 12px 10px;
        margin: 4px 0;
        font-size: 0.95rem;
        border-radius: 6px;
        line-height: 1.3;
        min-height: 44px; /* Touch target size */
        display: flex;
        align-items: center;
    }
    
    .radio-group input[type="radio"] {
        margin-right: 12px;
        transform: scale(1.2);
    }
    
    #result-container {
        margin-top: 15px;
        padding: 15px;
        border-radius: 6px;
    }
    
    #result-container h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    #recommendation {
        font-size: 1rem;
        line-height: 1.4;
    }
    
    #comments {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    .footer-notes {
        margin-top: 20px;
        padding-top: 15px;
        font-size: 0.8rem;
        line-height: 1.4;
    }
    
    .footer-notes a {
        padding: 6px 12px;
        font-size: 0.8em;
        border-radius: 6px;
        margin: 2px 0;
        min-height: 32px;
        display: inline-flex;
        align-items: center;
    }
    
    /* Mobile back button */
    .back-btn {
        top: 10px;
        left: 10px;
        padding: 6px 10px;
        font-size: 12px;
        border-radius: 4px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px 5px;
    }
    
    .tool-container {
        padding: 15px 10px;
        border-radius: 4px;
    }
    
    h1 {
        font-size: 1.3rem;
        margin-bottom: 6px;
    }
    
    h2 {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }
    
    .form-grid {
        gap: 12px;
    }
    
    fieldset {
        padding: 10px;
        margin-bottom: 12px;
    }
    
    legend {
        font-size: 0.9rem;
        padding: 0 6px;
    }
    
    .radio-group label {
        padding: 10px 8px;
        margin: 3px 0;
        font-size: 0.9rem;
        border-radius: 4px;
        min-height: 48px; /* Larger touch target for small screens */
    }
    
    .radio-group input[type="radio"] {
        margin-right: 10px;
        transform: scale(1.3);
    }
    
    #result-container {
        margin-top: 12px;
        padding: 12px;
    }
    
    #result-container h3 {
        font-size: 1rem;
    }
    
    #recommendation {
        font-size: 0.95rem;
    }
    
    #comments {
        font-size: 0.85rem;
    }
    
    .footer-notes {
        margin-top: 15px;
        padding-top: 12px;
        font-size: 0.75rem;
    }
    
    .footer-notes a {
        padding: 5px 10px;
        font-size: 0.75em;
        border-radius: 4px;
        margin: 1px 0;
        min-height: 28px;
        display: inline-flex;
        align-items: center;
    }
    
    /* Small screen back button */
    .back-btn {
        top: 8px;
        left: 8px;
        padding: 8px 12px;
        font-size: 12px;
        min-height: 36px;
        display: flex;
        align-items: center;
        text-transform: none;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .radio-group label {
        min-height: 48px;
        padding: 14px 12px;
    }
    
    .radio-group label:hover {
        background: var(--rich-black); /* Disable hover effects on touch */
        border-color: var(--ash-gray);
    }
    
    .radio-group label:active {
        background: var(--night);
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    .radio-group input[type="radio"] {
        transform: scale(1.4);
        margin-right: 14px;
    }
    
    /* Touch-optimized back button */
    .back-btn {
        min-height: 44px;
        padding: 12px 18px;
        font-size: 14px;
        text-transform: none;
    }
    
    .back-btn:hover {
        background: linear-gradient(135deg, var(--aquamarine), var(--jungle-green)); /* Disable hover on touch */
        transform: none;
    }
    
    .back-btn:active {
        background: linear-gradient(135deg, var(--jungle-green), var(--bronze));
        transform: scale(0.95);
    }
}