:root {
    --color-primary: #4361ee;
    --color-primary-light: #4895ef;
    --color-primary-dark: #3a0ca3;
    --color-secondary: #4cc9f0;
    --color-secondary-light: #72efdd;
    --color-secondary-dark: #3f8efc;
    --color-accent: #f72585;
    --color-accent-light: #ff8fab;
    --color-accent-dark: #b5179e;
    --color-success: #4CAF50;
    --color-error: #F44336;
    --color-neutral-50: #f8fafc;
    --color-neutral-100: #f1f5f9;
    --color-neutral-200: #e2e8f0;
    --color-neutral-300: #cbd5e1;
    --color-neutral-400: #94a3b8;
    --color-neutral-500: #64748b;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1e293b;
    --color-neutral-900: #0f172a;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --shadow-md: 0 4px 6px -1px rgba(67, 97, 238, 0.08), 0 2px 4px -1px rgba(67, 97, 238, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(67, 97, 238, 0.10), 0 4px 6px -2px rgba(67, 97, 238, 0.05);
    
    /* Legacy variables for backward compatibility */
    --primary-color: var(--color-primary);
    --secondary-color: var(--color-secondary);
    --success-color: var(--color-success);
    --error-color: var(--color-error);
    --text-color: var(--color-neutral-800);
    --background-color: var(--color-neutral-50);
    --border-color: var(--color-neutral-200);
    --info-color: var(--color-primary);
    --hint-color: var(--color-neutral-600);
    --pane-bg: #fff;
    --pane-border: var(--color-neutral-200);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans Devanagari', 'Arial Unicode MS', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-neutral-800);
    background-color: var(--color-neutral-50);
    font-size: 0.97em;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Main container fixes */
.simulation-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 0.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.main-content {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    box-sizing: border-box;
    justify-items: center;
    display: grid;
    grid-template-rows: auto 1fr;
    padding: 0 0.5rem;
    min-height: 100vh;
}

/* Instructions Panel */
.instructions-panel {
    width: 100%;
    max-width: 1400px;
    margin: 1.2rem auto 1.2rem auto;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    padding: 0;
    border-radius: 0.75rem;
    grid-row: 1;
    grid-column: 1 / -1;
}

.instructions-header.clickable {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.7em;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    cursor: pointer;
    padding: 0.7em 0;
    background: linear-gradient(90deg, #6ef2e6 0%, #4895ef 100%);
    border-radius: 1.2em 1.2em 0 0;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(67,97,238,0.04);
    border-bottom: 1px solid var(--color-neutral-200);
    margin: 0;
    position: relative;
}

.instructions-header.clickable:hover, .instructions-header.clickable:focus {
    background: var(--color-secondary-light);
    box-shadow: 0 4px 16px rgba(67,97,238,0.10);
}

.instructions-header.clickable h3 {
    margin: 0;
    font-size: 1.2em;
    font-weight: 700;
    color: #2a1a6e;
    letter-spacing: 0.01em;
    text-align: center;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

.instructions-header .arrow-icon {
    margin-left: 0.7em;
    font-size: 1.3em;
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
}

.instructions-content {
    background-color: white;
    padding: 1rem;
    border: 1px solid var(--color-neutral-200);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
    max-height: 500px;
    opacity: 1;
    overflow: hidden;
}

.instructions-content.collapsed {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.instructions-list {
    list-style: disc inside;
    margin: 0.2em 0 0.2em 1em;
    padding: 0;
    font-size: 1em;
    color: var(--color-neutral-800);
    line-height: 1.5;
}

.instructions-list li {
    margin-bottom: 0.3em;
}

/* Instructions Bar */
.instructions-bar {
    width: 100%;
    max-width: 1400px;
    margin: 1rem auto;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    padding: 0;
    border-radius: 0.75rem;
    grid-row: 1;
    grid-column: 1 / -1;
}

/* Three-pane Layout */
.three-pane-layout {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    box-sizing: border-box;
    justify-items: center;
    grid-row: 2;
    grid-column: 1 / -1;
    padding: 0 0.5rem;
}

.pane {
    box-sizing: border-box;
    width: 100%;
    min-width: 280px;
    max-width: 450px;
    padding: 1rem;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--pane-border);
    margin: 0 auto;
    background: #fff;
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.pane-1, .pane-2, .pane-3 {
    width: 100%;
}

/* Pane Headers */
.pane-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-neutral-200);
}

.pane-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
    flex: 1;
}

.pane-header .fas {
    color: var(--color-primary-dark);
    font-size: 1rem;
}

/* Selection Block */
.selection-block {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-neutral-700);
    margin-bottom: 0.3rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 0.5rem;
}

.feature-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.feature-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-neutral-700);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.feature-group label .fas {
    color: var(--color-primary);
    font-size: 0.8rem;
    cursor: help;
}

/* Button Group */
.button-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 1rem;
    width: 100%;
}

/* Step Headers */
.step-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.step-title {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
}

/* Info Icons */
.info-icon {
    color: var(--color-primary-dark) !important;
    background: var(--color-secondary-light);
    border-radius: 50%;
    width: 1.3em;
    height: 1.3em;
    text-align: center;
    line-height: 1.3em;
    font-weight: bold;
    border: 1px solid var(--color-primary-light);
    font-size: 0.9rem;
    margin-left: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
}

.info-icon:focus {
    outline: 2px solid var(--color-primary);
}

/* Word Selection */
.word-selection-block {
    margin-top: 0.7em;
    display: flex;
    flex-direction: column;
    gap: 0.3em;
}

.pane-label {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 0.3rem;
}

.select-box {
    width: 100%;
    min-width: 120px;
    max-width: 220px;
    font-size: 0.98rem;
    padding: 0.35rem 0.5rem;
    margin: 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-neutral-300);
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-800);
    transition: all 0.2s;
}

.select-box:disabled {
    background-color: var(--color-neutral-200);
    cursor: not-allowed;
}

.select-box:focus {
    outline: 2px solid var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.10);
}

/* Form Select Styling */
.form-select {
    width: 100%;
    max-width: 100%;
    font-size: 0.9rem;
    padding: 0.5rem;
    margin: 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-neutral-300);
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-800);
    transition: all 0.2s;
    box-sizing: border-box;
}

.form-select:disabled {
    background-color: var(--color-neutral-200);
    cursor: not-allowed;
}

.form-select:focus {
    outline: 2px solid var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.10);
}

/* Correct/Incorrect States */
.form-select.correct {
    border-color: var(--color-success);
    background-color: #e8f5e9;
    color: var(--color-success);
    font-weight: 500;
}

.form-select.incorrect {
    border-color: var(--color-error);
    background-color: #ffebee;
    color: var(--color-error);
    font-weight: 500;
}

.select-box.correct {
    border-color: var(--color-success);
    background-color: #e8f5e9;
    color: var(--color-success);
    font-weight: 500;
}

.select-box.incorrect {
    border-color: var(--color-error);
    background-color: #ffebee;
    color: var(--color-error);
    font-weight: 500;
}

/* Enhanced wrong answer highlighting */
.select-box.incorrect,
.form-select.incorrect {
    box-shadow: 0 0 0 2px rgba(244, 67, 54, 0.2);
    animation: wrongAnswerPulse 0.5s ease-in-out;
}

@keyframes wrongAnswerPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* Features Display */
.features-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.feature-item {
    padding: 0.3rem 0.5rem;
    background-color: var(--color-neutral-100);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.correct-answer {
    background-color: #e8f5e9;
    border: 1px solid var(--color-success);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 0.5rem;
}

.feedback-container.info {
    background-color: #e3f2fd;
    color: var(--color-primary-dark);
}

/* Paradigm Section */
.paradigm-section {
    margin-top: 1.5rem;
}

.paradigm-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

/* Paradigm table styling */
.paradigm-display-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    background: white;
}

.paradigm-display-table th,
.paradigm-display-table td {
    padding: 0.5rem;
    text-align: left;
    border: 1px solid var(--color-neutral-300);
    word-wrap: break-word;
}

.paradigm-display-table th {
    background-color: var(--color-primary);
    color: white;
    font-weight: 600;
}

.paradigm-display-table td {
    background-color: #f9f9f9;
}

/* Add-Delete Table */
.add-delete-section {
    margin-top: 1rem;
}

/* Add-Delete table styling */
.add-delete-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
    font-size: 0.85rem;
}

.add-delete-table th,
.add-delete-table td {
    padding: 0.4rem;
    text-align: center;
    border: 1px solid var(--color-neutral-300);
    vertical-align: middle;
}

.add-delete-table th {
    background-color: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: 0.8rem;
}

.add-delete-table td {
    background-color: white;
}

.add-delete-table .select-box {
    width: 100%;
    max-width: 80px;
    font-size: 0.8rem;
    padding: 0.2rem;
    border: 1px solid var(--color-neutral-300);
    border-radius: 3px;
}

.check-cell {
    width: 30px;
    text-align: center;
    padding: 0.2rem;
}

/* Buttons */
.button-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0 0.5rem 0;
    justify-content: flex-start;
}

.primary-button, .secondary-button {
    width: 100%;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-sizing: border-box;
}

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

.primary-button:hover:not(:disabled) {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.secondary-button {
    background: var(--color-secondary);
    color: white;
}

.secondary-button:hover:not(:disabled) {
    background: var(--color-secondary-dark);
    transform: translateY(-1px);
}

.primary-button:disabled {
    background: var(--color-neutral-400);
    cursor: not-allowed;
    transform: none;
}

/* Feedback */
.feedback-container {
    margin-top: 20px;
    padding: 10px;
    border-radius: 4px;
    font-weight: 500;
}

.feedback-container.error {
    background-color: #ffebee;
    color: var(--color-error);
}

.feedback-container.success {
    background-color: #e8f5e9;
    color: var(--color-success);
}

/* Answer Container */
.answer-container {
    margin-top: 0.7em;
    padding: 0.7em 0.5em;
    background: var(--color-neutral-100);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-size: 1em;
    color: var(--color-neutral-800);
    line-height: 1.7;
    letter-spacing: 0.01em;
    display: none; /* Hidden by default */
}

.answer-container:not(:empty) {
    display: block; /* Show when content is added */
    padding: 1em;
    border: 2px solid var(--color-success);
    background: #f0f9ff;
}

.answer-container h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.correct-answer-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.correct-answer-table th,
.correct-answer-table td {
    padding: 0.4rem;
    text-align: center;
    border: 1px solid var(--color-neutral-300);
}

.correct-answer-table th {
    background-color: var(--color-success);
    color: white;
    font-weight: 600;
}

.correct-answer-table td {
    background-color: #e8f5e9;
}

/* Responsive Design Updates */
@media (max-width: 1200px) {
    .three-pane-layout {
        gap: 1rem;
        padding: 0 0.25rem;
    }
    
    .pane {
        min-width: 250px;
        max-width: 400px;
    }
}

@media (max-width: 900px) {
    .three-pane-layout {
        display: block !important;
        width: 100%;
        max-width: 100%;
        gap: 0;
        padding: 0 0.25rem;
    }
    
    .pane {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0;
        margin: 0 0 1.5rem 0;
        min-height: auto;
    }
    
    .add-delete-table {
        font-size: 0.8rem;
    }
    
    .add-delete-table th,
    .add-delete-table td {
        padding: 0.3rem;
    }
    
    .add-delete-table .select-box {
        max-width: 70px;
        font-size: 0.75rem;
    }
}

@media (max-width: 600px) {
    .simulation-container,
    .main-content {
        padding: 0 0.25rem;
    }
    
    .pane {
        padding: 0.8rem;
        margin: 0 0 1rem 0;
    }
    
    .pane-header h3 {
        font-size: 1rem;
    }
    
    .add-delete-table {
        font-size: 0.75rem;
    }
    
    .add-delete-table .select-box {
        max-width: 60px;
        font-size: 0.7rem;
        padding: 0.1rem;
    }
    
    .button-group {
        gap: 0.5rem;
    }
    
    .primary-button, .secondary-button {
        padding: 0.5rem 0.8rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .pane {
        padding: 0.6rem;
    }
    
    .pane-header h3 {
        font-size: 0.9rem;
    }
    
    .add-delete-table th,
    .add-delete-table td {
        padding: 0.2rem;
        font-size: 0.7rem;
    }
    
    .add-delete-table .select-box {
        max-width: 50px;
        font-size: 0.65rem;
    }
}

/* Additional mobile fixes */
@media (max-width: 380px) {
    .pane-header h3 {
        font-size: 0.9rem;
        line-height: 1.2;
    }
    .feature-group label {
        font-size: 0.8rem;
    }
    .form-select, .select-box {
        font-size: 0.85rem;
        padding: 0.25rem 0.3rem;
    }
    .primary-button, .secondary-button {
        font-size: 0.85em;
        padding: 0.3rem 0.4rem;
    }
    .instructions-content {
        padding: 0.6rem;
    }
    .instructions-list {
        font-size: 0.85rem;
    }
}

/* Prevent horizontal scrolling */
* {
    box-sizing: border-box;
}

body {
    overflow-x: hidden;
}

.simulation-container, .container, .main-content, .instructions-panel, .instructions-bar, .three-pane-layout {
    max-width: 100%;
    overflow-x: hidden;
}

/* Ensure form elements are responsive */
.form-select, .select-box {
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
}

/* Features grid responsive improvements */
.features-grid {
    width: 100%;
    box-sizing: border-box;
}

.feature-group {
    width: 100%;
    box-sizing: border-box;
}

/* Button group responsive improvements */
.button-group {
    width: 100%;
    box-sizing: border-box;
} 

/* Touch and mobile improvements */
@media (hover: none) and (pointer: coarse) {
    .primary-button, .secondary-button {
        padding: 0.6rem 1rem;
        font-size: 1rem;
        min-height: 44px; /* Minimum touch target size */
    }
    
    .form-select, .select-box {
        padding: 0.6rem 0.8rem;
        font-size: 1rem;
        min-height: 44px;
    }
    
    .instructions-header.clickable {
        padding: 1rem 0;
        min-height: 44px;
    }
}

/* Ensure proper spacing on all screen sizes */
.pane {
    margin-bottom: 1.5rem;
}

.pane:last-child {
    margin-bottom: 0;
}

/* Improved text wrapping */
.pane-header h3 {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.feature-group label {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Ensure buttons don't overflow */
.button-group {
    overflow: hidden;
}

.primary-button, .secondary-button {
    word-wrap: break-word;
    overflow-wrap: break-word;
    text-align: center;
}

/* Fix for very small screens */
@media (max-width: 320px) {
    .simulation-container, .container, .main-content {
        padding: 0 0.5rem;
    }
    
    .pane {
        padding: 0.5rem 0.3rem;
    }
    
    .pane-header h3 {
        font-size: 0.85rem;
        line-height: 1.2;
    }
    
    .feature-group label {
        font-size: 0.75rem;
    }
    
    .form-select, .select-box {
        font-size: 0.8rem;
        padding: 0.4rem 0.3rem;
    }
    
    .primary-button, .secondary-button {
        font-size: 0.8em;
        padding: 0.4rem 0.5rem;
    }
    
    .instructions-content {
        padding: 0.5rem;
    }
    
    .instructions-list {
        font-size: 0.8rem;
    }
} 

/* Morphology Content Layout */
.morphology-content {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
    box-sizing: border-box;
}

.root-selection-section {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-neutral-200);
}

.root-selection-section h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.word-selection-block {
    margin-top: 0.7em;
    display: flex;
    flex-direction: column;
    gap: 0.3em;
}

.word-selection-block .select-box {
    width: 100%;
    max-width: 300px;
} 

/* Hindi/Devanagari specific styling */
.paradigm-display-table td,
.add-delete-table td,
.select-box,
.form-select,
.correct-answer-table td {
    font-family: 'Noto Sans Devanagari', 'Arial Unicode MS', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 1rem;
    line-height: 1.5;
}

/* Ensure proper rendering of Hindi text in dropdowns */
.select-box option,
.form-select option {
    font-family: 'Noto Sans Devanagari', 'Arial Unicode MS', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    padding: 0.3rem;
}