/* Utility classes */
.hidden {
    display: none !important;
}

/* Worksheet-specific styles */
.question-card {
    background: white;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #e5e7eb;
    transition: border-color 0.3s ease;
}

.question-card.answered {
    border-left-color: #3b82f6;
}

.question-card.correct {
    border-left-color: #10b981;
}

.question-card.incorrect {
    border-left-color: #ef4444;
}

.question-number {
    font-size: 1.25rem;
    font-weight: bold;
    color: #1f2937;
    margin-bottom: 1rem;
}

.question-prompt {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    min-height: 3rem;
}

.answer-input-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

/* Work area label */
.work-area-label {
    display: block;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
    margin-top: 1rem;
}

.work-area-hint {
    font-weight: 400;
    color: #10b981;
    font-size: 0.875rem;
    font-style: italic;
}

/* Work area container */
.work-area-container {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

/* Work area as MathLive field for showing calculations */
.work-area-mathfield {
    flex: 1;
    min-height: 120px;
    padding: 0.75rem;
    border: 2px dashed #d1d5db !important;
    border-radius: 0.5rem;
    font-size: 1rem;
    background: #f9fafb !important;
    transition: border-color 0.2s, border-style 0.2s;
}

.work-area-mathfield:focus-within {
    outline: none;
    border-color: #6b7280 !important;
    border-style: solid !important;
    background: white !important;
    box-shadow: 0 0 0 3px rgba(107, 114, 128, 0.1);
}

/* Final answer field */
.answer-field-label {
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
    display: block;
}

.answer-field-hint {
    font-weight: 400;
    color: #9ca3af;
    font-size: 0.875rem;
    font-style: italic;
}

.answer-field-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.answer-field {
    flex: 1;
}

/* Dual fields for quadratic equations */
.dual-fields-container {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.answer-field-container.quadratic-field {
    flex: 1;
    min-width: 250px;
    margin-bottom: 0;
}

.quadratic-field-label {
    font-weight: 600;
    color: #374151;
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

.answer-field math-field {
    border: 2px solid #3b82f6;
    background: #eff6ff;
}

.answer-field math-field.correct {
    border-color: #10b981;
    background-color: #d1fae5;
}

.answer-field math-field.incorrect {
    border-color: #ef4444;
    background-color: #fee2e2;
}

.answer-input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.answer-input:focus {
    outline: none;
    border-color: #3b82f6;
}

.answer-input.correct {
    border-color: #10b981;
    background-color: #d1fae5;
}

.answer-input.incorrect {
    border-color: #ef4444;
    background-color: #fee2e2;
}

/* MathLive Input Styling */
math-field {
    flex: 1;
    padding: 0.5rem;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1.2rem;
    min-height: 50px;
    transition: border-color 0.2s;
    background: white;
}

math-field:focus-within {
    border-color: #3b82f6;
    outline: none;
}

math-field.correct {
    border-color: #10b981;
    background-color: #d1fae5;
}

math-field.incorrect {
    border-color: #ef4444;
    background-color: #fee2e2;
}

/* Keyboard Toggle Button */
.keyboard-toggle {
    width: 40px;
    height: 40px;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    background: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.keyboard-toggle:hover {
    background: #f3f4f6;
    border-color: #3b82f6;
}

.keyboard-toggle.active {
    background: #3b82f6;
    border-color: #3b82f6;
}

.keyboard-toggle svg {
    width: 24px;
    height: 24px;
    fill: #6b7280;
}

.keyboard-toggle.active svg {
    fill: white;
}

/* MathLive Virtual Keyboard Customization */
.ML__keyboard {
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.ML__keyboard--calculator {
    background: #f9fafb;
}

/* Action buttons */
.question-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.btn-compute {
    background: #8b5cf6;
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-compute:hover {
    background: #7c3aed;
}

.btn-compute:disabled {
    background: #d1d5db;
    cursor: not-allowed;
}

.btn-check {
    background: #3b82f6;
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-check:hover {
    background: #2563eb;
}

.btn-check:disabled {
    background: #d1d5db;
    cursor: not-allowed;
}

/* Computed result box */
.computed-result {
    margin-top: 1rem;
    padding: 1rem;
    background: #f3e8ff;
    border: 2px solid #8b5cf6;
    border-radius: 0.5rem;
    font-size: 0.95rem;
}

.computed-result-title {
    font-weight: 600;
    color: #6b21a8;
    margin-bottom: 0.5rem;
}

.computed-result-value {
    font-family: 'Courier New', monospace;
    color: #581c87;
    font-size: 1.1rem;
}

/* Feedback styles */
.feedback {
    margin-top: 0.5rem;
    padding: 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.feedback.correct {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.feedback.incorrect {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

.feedback-icon {
    font-size: 1.2rem;
}

/* Status badge */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-badge.unanswered {
    background: #f3f4f6;
    color: #6b7280;
}

.status-badge.answered {
    background: #dbeafe;
    color: #1e40af;
}

.status-badge.correct {
    background: #d1fae5;
    color: #065f46;
}

.status-badge.incorrect {
    background: #fee2e2;
    color: #991b1b;
}

/* Progress bar */
.progress-section {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
}

.progress-text {
    font-size: 0.95rem;
    color: #374151;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.progress-bar-container {
    width: 100%;
    height: 24px;
    background: #e5e7eb;
    border-radius: 9999px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #2563eb);
    border-radius: 9999px;
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 0.5rem;
}

.progress-percentage {
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
}

.katex {
    font-size: 1.2em;
}

/* MathLive custom keyboard layout */
.ML__keycap {
    min-width: 48px;
    min-height: 48px;
    font-size: 1.1em;
}

/* Hide MathLive's default keyboard toggle button */
.ML__virtual-keyboard-toggle,
math-field::part(virtual-keyboard-toggle) {
    display: none !important;
}

/* Quadratic keyboard formula styling */
.ML__keycap.large-formula {
    min-width: 400px !important;
    padding: 10px !important;
    font-size: 1.3em !important;
    background: #e3f2fd !important;
    border: 2px solid #2196f3 !important;
}

.ML__keycap.large-formula:hover {
    background: #bbdefb !important;
}

/* Quadratic plotter styling */
.quadratic-plot-wrapper {
    margin-top: 1rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 0.5rem;
    border: 1px solid #e5e7eb;
}

.quadratic-canvas {
    display: block;
    margin: 0 auto;
    background: white;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.quadratic-info {
    margin-top: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 0.375rem;
    border: 1px solid #e5e7eb;
}

.plot-info-row {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f3f4f6;
    font-size: 0.95rem;
}

.plot-info-row:last-child {
    border-bottom: none;
}

.plot-info-row strong {
    color: #374151;
    margin-right: 0.5rem;
}

.info-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.info-badge.success {
    background: #d1fae5;
    color: #065f46;
}

.info-badge.warning {
    background: #fef3c7;
    color: #92400e;
}

.info-badge.error {
    background: #fee2e2;
    color: #991b1b;
}

/* Hide unwanted MathLive keyboard tabs (Greek, symbols, etc.) */
/* Try multiple selectors to catch different MathLive versions */
.MLK__tab-label[data-label="greek"],
.MLK__tab-label[data-label="symbols"],
.MLK__tab-label[data-label="numeric"],
.MLK__tab[data-label="greek"],
.MLK__tab[data-label="symbols"],
.MLK__tab[data-label="numeric"],
.ML__keyboard-menu-item[data-keyboard="greek"],
.ML__keyboard-menu-item[data-keyboard="symbols"],
.ML__keyboard-menu-item[data-keyboard="numeric"],
/* Also try matching by text content in tabs */
.ML__keyboard-toolbar-button:has([data-label*="greek" i]),
.ML__keyboard-toolbar-button:has([data-label*="symbols" i]),
.ML__keyboard-toolbar-button:has([data-label*="numeric" i]),
/* Try matching the actual tab buttons */
button.ML__tab-button[data-layer="greek"],
button.ML__tab-button[data-layer="symbols"],
button.ML__tab-button[data-layer="numeric"] {
    display: none !important;
    visibility: hidden !important;
}