/**
 * Modern Practice Interface V2 - Enhanced UI/UX
 *
 * @package MMLMS\Practice
 * @since 6.1.0
 */

/* ========================================
   CSS VARIABLES - ProMathsGuru Brand
   ======================================== */

/* ========================================
   BASE STYLES
   ======================================== */
.mmlms-practice-modern {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--mmlms-gray-700);
    line-height: 1.7;
    background: var(--mmlms-bg-primary); /* ProMathsGuru light background */
    padding: 16px;
}

/* ========================================
   MOBILE RESPONSIVE BREAKPOINTS
   ======================================== */
@media screen and (max-width: 768px) {
    .mmlms-practice-modern {
        padding: 12px;
    }
    
    .mmlms-header-row {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    
    .mmlms-header-title .mmlms-header-label {
        font-size: 24px;
    }
    
    .mmlms-btn-start {
        width: 100%;
        padding: 16px 24px;
        font-size: 16px;
    }
    
    .mmlms-instruction-item {
        padding: 14px;
    }
    
    .mmlms-screen-instructions {
        padding: 40px 16px;
    }
    
    .mmlms-header-card {
        padding: 24px;
    }
}

@media screen and (max-width: 480px) {
    .mmlms-practice-modern {
        padding: 8px;
    }
    
    .mmlms-header-row {
        grid-template-columns: 1fr;
    }
    
    .mmlms-header-title .mmlms-header-label {
        font-size: 20px;
    }
    
    .mmlms-screen-instructions {
        padding: 24px 12px;
    }
    
    .mmlms-header-card {
        padding: 20px;
    }
    
    .mmlms-instruction-item {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
    
    .mmlms-btn-start {
        align-self: stretch;
        padding: 14px 20px;
    }
    
    .mmlms-start-section {
        margin-top: 24px;
        padding-top: 24px;
    }
}

.mmlms-practice-modern * {
    box-sizing: border-box;
}

/* ========================================
   BUTTONS (Module-specific variants only)
   ======================================== */

.mmlms-btn-start {
    background: var(--mmlms-primary-gradient);
    color: white;
    padding: 18px 44px;
    font-size: 18px;
    font-weight: 700;
    border-radius: var(--mmlms-radius-lg);
    box-shadow: 0 10px 20px rgba(28, 47, 255, 0.25);
    align-self: flex-start;
    border: none;
    cursor: pointer;
    transition: var(--mmlms-transition);
}

.mmlms-btn-start:hover:not(:disabled) {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 20px 30px rgba(28, 47, 255, 0.3);
}

.mmlms-btn-start:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.mmlms-btn-start .dashicons {
    font-size: 22px;
    width: 22px;
    height: 22px;
    transition: transform 0.3s ease;
}

.mmlms-btn-start:hover:not(:disabled) .dashicons {
    transform: translateX(4px);
}

.mmlms-btn-end {
    background: var(--mmlms-gray-100);
    color: var(--mmlms-danger);
    border: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
}

.mmlms-btn-end:hover:not(:disabled) {
    background: #fee2e2;
    color: #b91c1c;
}

.mmlms-btn-submit {
    background: var(--mmlms-success);
    color: white;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border: none;
}

.mmlms-btn-submit:hover:not(:disabled) {
    background: #059669;
}

.mmlms-btn-submit:disabled {
    background: var(--mmlms-gray-300);
    box-shadow: none;
}

/* Base .mmlms-btn, .mmlms-btn-primary, .mmlms-btn-secondary, .mmlms-btn-danger
   are standardized in assets/global/ui-foundation.css */

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.mmlms-screen {
    animation: fadeIn 0.3s ease-in-out;
}

/* ========================================
   INSTRUCTIONS SCREEN (Modernized)
   ======================================== */
.mmlms-screen-instructions {
    max-width: 850px;
    margin: 0 auto;
    padding: 60px 20px;
    animation: slideInUp 0.4s ease-out;
}

.mmlms-header-card {
    background: linear-gradient(135deg, #ffffff 0%, var(--mmlms-gray-50) 100%);
    border-radius: var(--mmlms-radius-xl);
    padding: 40px;
    box-shadow: var(--mmlms-shadow-lg);
    border: 1px solid var(--mmlms-gray-100);
    animation: scaleIn 0.4s ease-out;
    position: relative;
    overflow: hidden;
}

.mmlms-header-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--mmlms-primary-xlight) 0%, transparent 70%);
    opacity: 0.3;
    pointer-events: none;
}

.mmlms-header-row {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.mmlms-header-row:last-child {
    margin-bottom: 0;
}

.mmlms-header-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mmlms-header-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mmlms-gray-600);
}

.mmlms-header-title .mmlms-header-label {
    font-size: 32px;
    font-weight: 800;
    text-transform: none;
    letter-spacing: 0;
    background: var(--mmlms-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

@media screen and (max-width: 768px) {
    .mmlms-header-title .mmlms-header-label {
        font-size: 26px;
    }
}

@media screen and (max-width: 480px) {
    .mmlms-header-title .mmlms-header-label {
        font-size: 22px;
    }
}

.mmlms-header-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--mmlms-gray-800);
}

.mmlms-badge-difficulty {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--mmlms-radius);
    font-size: 13px;
    font-weight: 600;
}

.mmlms-badge-difficulty.easy {
    background: var(--mmlms-success-light);
    color: #065f46;
}

.mmlms-badge-difficulty.medium {
    background: var(--mmlms-warning-light);
    color: #78350f;
}

.mmlms-badge-difficulty.hard {
    background: var(--mmlms-danger-light);
    color: #7f1d1d;
}

.mmlms-instructions-card {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 32px 0 16px 0;
}

.mmlms-instructions-title {
    color: var(--mmlms-gray-800);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.mmlms-instructions-title .dashicons {
    color: var(--mmlms-primary);
    font-size: 24px;
    width: 24px;
    height: 24px;
}

.mmlms-instructions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mmlms-instruction-item {
    background: white;
    border: 1px solid var(--mmlms-gray-100);
    border-left: 4px solid var(--mmlms-primary);
    border-radius: var(--mmlms-radius-lg);
    padding: 18px;
    box-shadow: var(--mmlms-shadow-sm);
    transition: var(--mmlms-transition);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    animation: slideInUp 0.4s ease-out;
}

.mmlms-instruction-item:nth-child(2) {
    animation-delay: 0.05s;
}

.mmlms-instruction-item:nth-child(3) {
    animation-delay: 0.1s;
}

.mmlms-instruction-item:nth-child(4) {
    animation-delay: 0.15s;
}

.mmlms-instruction-item:nth-child(5) {
    animation-delay: 0.2s;
}

.mmlms-instruction-item:nth-child(6) {
    animation-delay: 0.25s;
}

.mmlms-instruction-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--mmlms-shadow-md);
    border-left-color: var(--mmlms-secondary);
}

.mmlms-instruction-item.mmlms-instruction-locked {
    border-left-color: var(--mmlms-warning);
    background: var(--mmlms-warning-light);
}

.mmlms-instruction-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    background: var(--mmlms-primary-light);
    color: var(--mmlms-primary-dark);
    border-radius: var(--mmlms-radius);
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.mmlms-instruction-item.mmlms-instruction-locked .mmlms-instruction-icon {
    background: var(--mmlms-warning-light);
    color: #92400e;
}

.mmlms-instruction-icon .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
}

.mmlms-instruction-item span:not(.mmlms-instruction-icon) {
    font-size: 15px;
    line-height: 1.6;
    color: var(--mmlms-gray-700);
}

.mmlms-instruction-item strong {
    color: var(--mmlms-gray-900);
    font-weight: 700;
}

.mmlms-start-section {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--mmlms-gray-100);
    display: flex;
    flex-direction: column;
    gap: 24px;
    animation: slideInUp 0.4s ease-out;
    animation-delay: 0.3s;
    animation-fill-mode: both;
}

.mmlms-start-confirmation {
    background: var(--mmlms-primary-xlight);
    border: 1px solid var(--mmlms-primary-light);
    border-radius: var(--mmlms-radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mmlms-start-checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
    margin: 0;
}

.mmlms-start-checkbox input[type="checkbox"] {
    display: none;
}

.mmlms-checkbox-custom {
    position: relative;
    width: 24px;
    height: 24px;
    min-width: 24px;
    background: white;
    border: 2px solid var(--mmlms-primary);
    border-radius: var(--mmlms-radius-sm);
    transition: var(--mmlms-transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mmlms-start-checkbox input:checked + .mmlms-checkbox-custom {
    background: var(--mmlms-primary-gradient);
    border-color: var(--mmlms-primary);
}

.mmlms-start-checkbox input:checked + .mmlms-checkbox-custom::after {
    content: '✓';
    color: white;
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
}

.mmlms-checkbox-label {
    font-size: 15px;
    font-weight: 500;
    color: var(--mmlms-gray-800);
    line-height: 1.6;
}

.mmlms-start-checkbox:hover {
    opacity: 0.9;
}

.mmlms-start-note {
    margin: 0;
    font-size: 13px;
    color: var(--mmlms-gray-600);
    font-weight: 500;
}

/* ========================================
   QUESTIONS SCREEN (Modernized)
   ======================================== */
.mmlms-top-nav {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--mmlms-gray-100);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--mmlms-shadow-sm);
}

.mmlms-screen-questions {
    background: linear-gradient(180deg, #f8faff 0%, #fdfdff 100%);
    min-height: 100vh;
}

.mmlms-screen-questions .mmlms-top-nav {
    position: sticky;
    top: 0;
    z-index: 20;
}

.mmlms-top-nav-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mmlms-meta-item {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--mmlms-gray-200);
    color: var(--mmlms-gray-700);
    padding: 3px 10px;
    font-weight: 600;
}

.mmlms-top-nav-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--mmlms-gray-900);
}

.mmlms-top-nav-meta {
    font-size: 13px;
    color: var(--mmlms-gray-500);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mmlms-meta-separator {
    color: var(--mmlms-gray-300);
}

.mmlms-main-layout {
    max-width: 1600px;
    display: grid;
    grid-template-columns: 60% 40%;
    gap: 24px;
    padding: 24px;
    flex: 1;
    overflow: hidden;
    align-items: start;
}

/* Question Panel */
.mmlms-question-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: white;
    border-radius: var(--mmlms-radius-lg);
    padding: 24px;
    box-shadow: var(--mmlms-shadow);
    border: 1px solid var(--mmlms-gray-100);
    overflow-y: auto;
}

.mmlms-question-box {
    min-height: 240px;
}

.mmlms-question-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--mmlms-gray-50);
    border-radius: var(--mmlms-radius);
    border: 1px solid var(--mmlms-gray-200);
    gap: 16px;
}

.mmlms-question-timer {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: white;
    border-radius: var(--mmlms-radius);
    border: 1px solid var(--mmlms-gray-200);
    font-weight: 600;
}

.mmlms-question-timer .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
    color: var(--mmlms-primary);
}

.mmlms-timer-label {
    color: var(--mmlms-gray-600);
    font-size: 13px;
}

.mmlms-timer-value {
    font-size: 16px;
    color: var(--mmlms-primary);
    font-weight: 700;
    font-family: 'Courier New', monospace;
}

.mmlms-timer-value.warning {
    color: var(--mmlms-warning);
}

.mmlms-timer-value.danger {
    color: var(--mmlms-danger);
    animation: pulse 1s ease-in-out infinite;
}

/* Doubt Toggle */
.mmlms-doubt-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.mmlms-doubt-toggle input[type="checkbox"] {
    display: none;
}

.mmlms-toggle-slider {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--mmlms-gray-300);
    border-radius: 12px;
    transition: background 0.3s ease;
}

.mmlms-toggle-slider::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: left 0.3s ease;
    box-shadow: var(--mmlms-shadow-sm);
}

.mmlms-doubt-toggle input:checked + .mmlms-toggle-slider {
    background: var(--mmlms-warning);
}

.mmlms-doubt-toggle input:checked + .mmlms-toggle-slider::after {
    left: 22px;
}

.mmlms-toggle-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--mmlms-gray-700);
}

/* Question Content */
.mmlms-question-content-wrapper {
    background: white;
    border-radius: var(--mmlms-radius-lg);
    padding: 32px;
    box-shadow: var(--mmlms-shadow-sm);
    border: 1px solid var(--mmlms-gray-100);
    flex: 1;
    animation: slideInUp 0.3s ease-out;
}

.mmlms-question-number {
    padding-bottom: 12px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--mmlms-gray-100);
    font-size: 14px;
    font-weight: 600;
    color: var(--mmlms-gray-600);
}

.mmlms-question-text {
    font-size: 18px;
    line-height: 1.8;
    color: var(--mmlms-gray-800);
    margin-bottom: 20px;
    font-weight: 500;
    max-width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}

/* Math content overflow handling */
.mmlms-question-text .math-content,
.mmlms-question-text mjx-container,
.mmlms-question-text .mjx-chtml {
    max-width: 100% !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
}

/* Ensure long equations don't overflow */
.mmlms-question-text .mjx-chtml {
    display: inline-block !important;
    vertical-align: middle;
}

.mmlms-question-image {
    width: 100%;
    max-width: 400px;
    margin: 16px 0;
    border-radius: var(--mmlms-radius);
    box-shadow: var(--mmlms-shadow-sm);
}

.mmlms-passage-box {
    background: var(--mmlms-gray-50);
    border: 1px dashed var(--mmlms-gray-300);
    border-left: 4px solid var(--mmlms-secondary);
    border-radius: var(--mmlms-radius);
    padding: 16px;
    margin: 16px 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--mmlms-gray-700);
    max-width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

/* Options Container */
.mmlms-options-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 24px 0;
}

/* Options */
.mmlms-option {
    padding: 16px;
    background: white;
    border: 2px solid var(--mmlms-gray-200);
    border-radius: var(--mmlms-radius);
    box-shadow: var(--mmlms-shadow-xs);
    cursor: pointer;
    transition: var(--mmlms-transition-fast);
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.mmlms-option:hover {
    background: var(--mmlms-primary-xlight);
    border-color: var(--mmlms-primary);
    box-shadow: var(--mmlms-shadow-sm);
}

.mmlms-option.selected {
    background: var(--mmlms-primary-light);
    border-color: var(--mmlms-primary);
    box-shadow: 0 0 0 3px var(--mmlms-primary-xlight);
}

.mmlms-option.correct {
    background: var(--mmlms-success-light);
    border-color: var(--mmlms-success);
}

.mmlms-option.wrong {
    background: var(--mmlms-danger-light);
    border-color: var(--mmlms-danger);
}

.mmlms-option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    background: var(--mmlms-primary-light);
    color: var(--mmlms-primary-dark);
    border-radius: var(--mmlms-radius-sm);
    font-weight: 700;
    font-size: 15px;
    border: 1px solid var(--mmlms-gray-200);
    flex-shrink: 0;
    transition: var(--mmlms-transition-fast);
}

.mmlms-option:hover .mmlms-option-letter,
.mmlms-option.selected .mmlms-option-letter {
    transform: scale(1.1);
    background: var(--mmlms-primary);
    color: white;
}

.mmlms-option-text {
    flex: 1;
    font-size: 15px;
    line-height: 1.6;
    color: var(--mmlms-gray-800);
    max-width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}

/* Math in options overflow handling */
.mmlms-option-text .math-content,
.mmlms-option-text mjx-container,
.mmlms-option-text .mjx-chtml {
    max-width: 100% !important;
    overflow-x: auto !important;
}

.mmlms-question-actions {
    display: flex;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px solid var(--mmlms-gray-100);
    margin-top: 20px;
}

/* Arrow Navigation */
.mmlms-arrow-nav {
    display: flex;
    gap: 12px;
    justify-content: center;
    padding-top: 16px;
}

.mmlms-arrow {
    width: 48px;
    height: 48px;
    background: white;
    border: 2px solid var(--mmlms-gray-200);
    color: var(--mmlms-gray-600);
    border-radius: var(--mmlms-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--mmlms-shadow-xs);
    transition: var(--mmlms-transition-fast);
}

.mmlms-arrow:hover:not(:disabled) {
    background: var(--mmlms-primary);
    border-color: var(--mmlms-primary);
    color: white;
    box-shadow: var(--mmlms-shadow);
    transform: translateY(-2px);
}

.mmlms-arrow:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========================================
   SIDEBAR PANEL (Modernized)
   ======================================== */
.mmlms-sidebar-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 110px);
}

.mmlms-palette-card,
.mmlms-solution-card,
.mmlms-progress-card {
    background: white;
    border-radius: var(--mmlms-radius-lg);
    box-shadow: var(--mmlms-shadow);
    border: 1px solid var(--mmlms-gray-100);
    padding: 20px;
    animation: slideInUp 0.4s ease-out;
}

.mmlms-solution-card {
    animation-delay: 0.05s;
}

.mmlms-progress-card {
    animation-delay: 0.1s;
}

/* Palette Card */
.mmlms-palette-header,
.mmlms-solution-header,
.mmlms-progress-header {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.mmlms-heading {
    margin: 0;
    font-size: 15px;
    font-weight: 700;
    color: var(--mmlms-gray-900);
}

.mmlms-btn-toggle {
    border: 1px solid var(--mmlms-gray-200);
    background: white;
    color: var(--mmlms-gray-600);
    width: 30px;
    height: 30px;
    border-radius: var(--mmlms-radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--mmlms-transition-fast);
}

.mmlms-btn-toggle:hover {
    border-color: var(--mmlms-primary);
    color: var(--mmlms-primary);
    background: var(--mmlms-primary-xlight);
}

.mmlms-btn-toggle .dashicons {
    width: 16px;
    height: 16px;
    font-size: 16px;
}

.mmlms-palette-header h4,
.mmlms-solution-header h4,
.mmlms-progress-header h4 {
    color: var(--mmlms-gray-800);
    font-size: 15px;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mmlms-palette-header h4::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--mmlms-primary);
    border-radius: 50%;
}

.mmlms-palette-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--mmlms-gray-200);
}

.mmlms-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--mmlms-gray-600);
}

.mmlms-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.mmlms-legend-dot.unsolved {
    background: var(--mmlms-gray-300);
}

.mmlms-legend-dot.correct {
    background: var(--mmlms-success);
}

.mmlms-legend-dot.wrong {
    background: var(--mmlms-danger);
}

.mmlms-legend-dot.doubt {
    background: var(--mmlms-warning);
}

.mmlms-palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(42px, 1fr));
    gap: 8px;
    justify-items: center;
}

.mmlms-palette-btn {
    width: 40px;
    min-width: 40px;
    height: 40px;
    min-height: 40px;
    padding: 0;
    border-radius: var(--mmlms-radius-sm);
    border: 2px solid var(--mmlms-gray-200);
    background: white;
    font-weight: 600;
    font-size: 12px;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    cursor: pointer;
    transition: var(--mmlms-transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
}

.mmlms-palette-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.8ch;
    line-height: 1;
}

.mmlms-palette-btn:hover:not(.active):not(.correct):not(.wrong):not(.doubt) {
    background: var(--mmlms-primary-xlight);
    border-color: var(--mmlms-primary);
    color: var(--mmlms-primary);
    transform: translateY(-2px);
}

.mmlms-palette-btn.active {
    background: var(--mmlms-primary);
    color: white;
    border-color: var(--mmlms-primary);
    box-shadow: 0 0 0 3px var(--mmlms-primary-xlight);
}

.mmlms-palette-btn.correct {
    background: var(--mmlms-success-light);
    border-color: var(--mmlms-success);
    color: #065f46;
}

.mmlms-palette-btn.wrong {
    background: var(--mmlms-danger-light);
    border-color: var(--mmlms-danger);
    color: #7f1d1d;
}

.mmlms-palette-btn.doubt {
    background: var(--mmlms-warning-light);
    border-color: var(--mmlms-warning);
    color: #78350f;
}

/* Solution Panel */
.mmlms-solution-content {
    font-size: 14px;
    line-height: 1.6;
    color: var(--mmlms-gray-700);
    max-height: 200px;
    overflow-y: auto;
    overflow-x: hidden;
    max-width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Math in solution overflow handling */
.mmlms-solution-content .math-content,
.mmlms-solution-content mjx-container,
.mmlms-solution-content .mjx-chtml {
    max-width: 100% !important;
    overflow-x: auto !important;
}

.mmlms-solution-placeholder,
.mmlms-solution-locked {
    background: var(--mmlms-gray-50);
    border: 1px dashed var(--mmlms-gray-300);
    border-radius: var(--mmlms-radius);
    padding: 16px;
    text-align: center;
    font-size: 13px;
    color: var(--mmlms-gray-500);
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mmlms-solution-locked {
    background: var(--mmlms-danger-light);
    border-color: var(--mmlms-danger);
    color: #7f1d1d;
}

.mmlms-tier-badge {
    display: inline-block;
    background: var(--mmlms-warning);
    color: white;
    padding: 4px 8px;
    border-radius: var(--mmlms-radius-xs);
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 8px;
}

/* Progress Card */
.mmlms-progress-header span {
    font-weight: 600;
    color: var(--mmlms-gray-800);
    display: block;
    font-size: 13px;
}

.mmlms-progress-text {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--mmlms-gray-600);
}

.mmlms-progress-current {
    color: var(--mmlms-primary);
    font-weight: 700;
}

.mmlms-progress-bar-container {
    height: 12px;
    border-radius: 6px;
    background: var(--mmlms-gray-200);
    overflow: hidden;
    margin: 12px 0;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.mmlms-progress-bar {
    height: 100%;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--mmlms-primary) 0%, var(--mmlms-secondary) 100%);
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px rgba(79, 70, 229, 0.3);
}

.mmlms-progress-counter {
    font-size: 13px;
    color: var(--mmlms-gray-600);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ========================================
   ANALYSIS SCREEN (Modernized)
   ======================================== */
.mmlms-screen-analysis {
    animation: slideInUp 0.4s ease-out;
}

.mmlms-analysis-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.mmlms-analysis-header {
    text-align: center;
    margin-bottom: 48px;
}

.mmlms-analysis-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--mmlms-gray-900);
    margin-bottom: 8px;
}

.mmlms-analysis-subtitle {
    font-size: 16px;
    color: var(--mmlms-gray-600);
}

.mmlms-score-section {
    text-align: center;
    margin-bottom: 48px;
}

.mmlms-score-circle {
    width: 220px;
    height: 220px;
    margin: 0 auto 24px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--mmlms-shadow-xl);
    position: relative;
    font-weight: 700;
    animation: scaleIn 0.5s ease-out;
}

.mmlms-score-circle.excellent {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    border: 3px solid var(--mmlms-success);
}

.mmlms-score-circle.good {
    background: linear-gradient(135deg, #cffafe 0%, #a5f3fc 100%);
    color: #164e63;
    border: 3px solid var(--mmlms-secondary);
}

.mmlms-score-circle.needs-improvement {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #78350f;
    border: 3px solid var(--mmlms-warning);
}

.mmlms-score-value {
    font-size: 56px;
    line-height: 1;
}

.mmlms-score-label {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 8px;
}

.mmlms-performance-badge {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--mmlms-radius-lg);
    font-size: 13px;
    font-weight: 700;
    margin-top: 12px;
}

.mmlms-performance-badge.excellent {
    background: var(--mmlms-success-light);
    color: #065f46;
}

.mmlms-performance-badge.good {
    background: var(--mmlms-secondary-light);
    color: #164e63;
}

.mmlms-performance-badge.needs-improvement {
    background: var(--mmlms-warning-light);
    color: #78350f;
}

.mmlms-analysis-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.mmlms-stat-box {
    background: white;
    border-radius: var(--mmlms-radius-lg);
    border: 1px solid var(--mmlms-gray-100);
    padding: 24px;
    box-shadow: var(--mmlms-shadow-sm);
    animation: slideInUp 0.4s ease-out;
    text-align: center;
    transition: var(--mmlms-transition);
}

.mmlms-stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--mmlms-shadow-md);
}

.mmlms-stat-icon {
    font-size: 28px;
    margin-bottom: 12px;
    display: block;
}

.mmlms-stat-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mmlms-gray-600);
    margin-bottom: 8px;
    display: block;
}

.mmlms-stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--mmlms-gray-900);
    display: block;
}

.mmlms-analysis-card {
    background: white;
    border-radius: var(--mmlms-radius-lg);
    padding: 32px;
    border: 1px solid var(--mmlms-gray-100);
    box-shadow: var(--mmlms-shadow);
    margin-bottom: 24px;
    animation: slideInUp 0.4s ease-out;
}

.mmlms-analysis-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--mmlms-gray-900);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Time Stats */
.mmlms-time-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.mmlms-time-item {
    background: var(--mmlms-gray-50);
    border-radius: var(--mmlms-radius);
    padding: 16px;
    text-align: center;
}

.mmlms-time-item.highlight {
    background: #ecfdf5;
    border: 2px solid #10b981;
}

.mmlms-time-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--mmlms-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 8px;
}

.mmlms-time-value {
    font-size: 20px;
    font-weight: 800;
    color: var(--mmlms-primary);
    font-family: 'Courier New', monospace;
}

/* Breakdown Section */
.mmlms-breakdown-section {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--mmlms-gray-200);
}

.mmlms-breakdown-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--mmlms-gray-800);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mmlms-breakdown-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mmlms-breakdown-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mmlms-breakdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.mmlms-breakdown-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--mmlms-gray-900);
}

.mmlms-breakdown-score {
    font-size: 12px;
    font-weight: 600;
    color: var(--mmlms-gray-600);
}

.mmlms-breakdown-bar-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mmlms-breakdown-bar {
    flex: 1;
    height: 8px;
    border-radius: 4px;
    background: var(--mmlms-gray-200);
    overflow: hidden;
}

.mmlms-breakdown-fill {
    height: 100%;
    display: block;
    border-radius: 4px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mmlms-breakdown-value {
    font-size: 12px;
    font-weight: 600;
    color: var(--mmlms-gray-600);
    min-width: 45px;
    text-align: right;
}

/* Difficulty Performance */
.mmlms-difficulty-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
}

.mmlms-difficulty-card {
    background: white;
    border: 2px solid var(--mmlms-gray-200);
    border-radius: var(--mmlms-radius);
    padding: 16px;
    text-align: center;
    transition: var(--mmlms-transition);
}

.mmlms-difficulty-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--mmlms-shadow);
}

.mmlms-difficulty-card.difficulty-easy {
    border-color: #86efac;
    background: #f0fdf4;
}

.mmlms-difficulty-card.difficulty-medium {
    border-color: #fcd34d;
    background: #fffbeb;
}

.mmlms-difficulty-card.difficulty-hard {
    border-color: #fca5a5;
    background: #fef2f2;
}

.mmlms-difficulty-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 12px;
}

.mmlms-difficulty-icon {
    font-size: 20px;
}

.mmlms-difficulty-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--mmlms-gray-700);
}

.mmlms-difficulty-stats {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mmlms-difficulty-score {
    font-size: 24px;
    font-weight: 800;
    color: var(--mmlms-gray-900);
}

.mmlms-difficulty-count {
    font-size: 11px;
    color: var(--mmlms-gray-600);
}

/* Areas for Improvement */
.mmlms-analysis-card.areas-for-improvement {
    border-left: 4px solid var(--mmlms-warning);
    background: linear-gradient(to right, rgba(245, 158, 11, 0.03), white);
}

.mmlms-improvement-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mmlms-improvement-item {
    background: var(--mmlms-gray-50);
    border-radius: var(--mmlms-radius);
    padding: 16px;
    border-left: 4px solid var(--mmlms-warning);
}

.mmlms-improvement-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.mmlms-improvement-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--mmlms-gray-900);
}

.mmlms-improvement-accuracy {
    font-size: 13px;
    font-weight: 600;
    color: var(--mmlms-warning);
}

.mmlms-improvement-suggestion {
    font-size: 13px;
    color: var(--mmlms-gray-700);
    line-height: 1.6;
    margin: 0;
}

.mmlms-analysis-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding-top: 24px;
    flex-wrap: wrap;
}

.mmlms-analysis-actions .mmlms-btn {
    padding: 14px 32px;
    font-size: 16px;
}

/* ========================================
   STUDENT DASHBOARD (Module 3)
   ======================================== */
.mmlms-practice-dashboard {
    max-width: 1120px;
    margin: 0 auto;
    padding: 24px 16px 40px;
}

.mmlms-student-header {
    background: linear-gradient(135deg, var(--mmlms-primary) 0%, var(--mmlms-secondary) 100%);
    color: white;
    border-radius: var(--mmlms-radius-xl);
    padding: 34px 26px;
    margin-bottom: 24px;
    box-shadow: var(--mmlms-shadow-lg);
    position: relative;
    overflow: hidden;
}

.mmlms-student-header::after {
    content: '';
    position: absolute;
    top: -40%;
    right: -12%;
    width: 240px;
    height: 240px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0) 70%);
    pointer-events: none;
}

.mmlms-student-header h1 {
    margin: 0 0 8px;
    font-size: 30px;
    font-weight: 800;
    line-height: 1.2;
    position: relative;
    z-index: 1;
}

.mmlms-student-header p {
    margin: 0;
    opacity: 0.96;
    font-size: 15px;
    position: relative;
    z-index: 1;
}

.mmlms-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.mmlms-stats-grid .mmlms-stat-card {
    background: white;
    border: 1px solid var(--mmlms-gray-150);
    border-radius: var(--mmlms-radius-lg);
    padding: 18px;
    box-shadow: var(--mmlms-shadow-sm);
    transition: var(--mmlms-transition);
}

.mmlms-stats-grid .mmlms-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--mmlms-shadow-md);
}

.mmlms-stats-grid .mmlms-stat-icon {
    margin-bottom: 12px;
    color: var(--mmlms-primary);
}

.mmlms-stats-grid .mmlms-stat-value {
    font-size: 30px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--mmlms-gray-900);
    margin-bottom: 4px;
}

.mmlms-stats-grid .mmlms-stat-label {
    font-size: 12px;
    color: var(--mmlms-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    font-weight: 700;
}

.mmlms-stats-grid .mmlms-stat-card.success .mmlms-stat-icon,
.mmlms-stats-grid .mmlms-stat-card.success .mmlms-stat-value {
    color: var(--mmlms-success);
}

.mmlms-stats-grid .mmlms-stat-card.warning .mmlms-stat-icon,
.mmlms-stats-grid .mmlms-stat-card.warning .mmlms-stat-value {
    color: var(--mmlms-warning);
}

.mmlms-stats-grid .mmlms-stat-card.danger .mmlms-stat-icon,
.mmlms-stats-grid .mmlms-stat-card.danger .mmlms-stat-value {
    color: var(--mmlms-danger);
}

.mmlms-dashboard-card {
    background: white;
    border: 1px solid var(--mmlms-gray-150);
    border-radius: var(--mmlms-radius-xl);
    padding: 22px;
    box-shadow: var(--mmlms-shadow);
}

.mmlms-card-title {
    margin: 0 0 14px;
    font-size: 20px;
    font-weight: 700;
    color: var(--mmlms-gray-900);
}

.mmlms-session-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mmlms-session-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    background: var(--mmlms-gray-50);
    border: 1px solid var(--mmlms-gray-150);
    border-radius: var(--mmlms-radius-lg);
    padding: 16px;
    transition: var(--mmlms-transition-fast);
}

.mmlms-session-card:hover {
    border-color: var(--mmlms-primary-light);
    box-shadow: var(--mmlms-shadow-sm);
}

.mmlms-session-card.completed {
    border-left: 4px solid var(--mmlms-success);
}

.mmlms-session-card.in-progress {
    border-left: 4px solid var(--mmlms-primary);
}

.mmlms-session-info h3 {
    margin: 0 0 8px;
    font-size: 17px;
    font-weight: 700;
    color: var(--mmlms-gray-900);
}

.mmlms-session-meta {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.mmlms-session-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--mmlms-gray-600);
    background: white;
    border: 1px solid var(--mmlms-gray-200);
    border-radius: 999px;
    padding: 4px 10px;
}

.mmlms-session-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mmlms-session-score {
    text-align: center;
    min-width: 82px;
}

.mmlms-session-score-value {
    font-size: 26px;
    line-height: 1;
    font-weight: 800;
    color: var(--mmlms-success);
}

.mmlms-session-score-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mmlms-gray-500);
    margin-top: 6px;
    font-weight: 600;
}

.mmlms-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.mmlms-badge-success {
    color: #065f46;
    background: var(--mmlms-success-light);
    border: 1px solid #86efac;
}

.mmlms-empty-state {
    text-align: center;
    background: var(--mmlms-gray-50);
    border: 1px dashed var(--mmlms-gray-300);
    border-radius: var(--mmlms-radius-lg);
    padding: 32px 18px;
}

.mmlms-empty-title {
    margin: 6px 0 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--mmlms-gray-900);
}

.mmlms-empty-text {
    margin: 0 0 18px;
    color: var(--mmlms-gray-600);
}

/* ========================================
   RESPONSIVE (Adjustments)
   ======================================== */
/* Analysis Screen Responsive */
@media (max-width: 1200px) {
    .mmlms-analysis-container {
        padding: 32px 16px;
    }

    .mmlms-analysis-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .mmlms-difficulty-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .mmlms-analysis-actions {
        gap: 12px;
    }

    .mmlms-stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .mmlms-analysis-container {
        padding: 24px 12px;
    }

    .mmlms-analysis-title {
        font-size: 24px;
    }

    .mmlms-score-circle {
        width: 180px;
        height: 180px;
    }

    .mmlms-score-value {
        font-size: 44px;
    }

    .mmlms-analysis-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .mmlms-stat-box {
        padding: 18px;
    }

    .mmlms-stat-value {
        font-size: 24px;
    }

    .mmlms-analysis-card {
        padding: 20px;
    }

    .mmlms-time-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .mmlms-difficulty-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .mmlms-difficulty-card {
        padding: 12px;
    }

    .mmlms-difficulty-score {
        font-size: 20px;
    }

    .mmlms-improvement-item {
        padding: 12px;
    }

    .mmlms-analysis-actions {
        flex-direction: column;
        gap: 10px;
    }

    .mmlms-analysis-actions .mmlms-btn {
        width: 100%;
        padding: 12px;
        font-size: 14px;
    }

    .mmlms-practice-dashboard {
        padding: 16px 10px 28px;
    }

    .mmlms-student-header {
        padding: 24px 18px;
        border-radius: var(--mmlms-radius-lg);
    }

    .mmlms-student-header h1 {
        font-size: 24px;
    }

    .mmlms-dashboard-card {
        padding: 16px;
    }

    .mmlms-session-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .mmlms-session-actions {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .mmlms-analysis-container {
        padding: 16px 8px;
    }

    .mmlms-analysis-header {
        margin-bottom: 32px;
    }

    .mmlms-analysis-title {
        font-size: 20px;
    }

    .mmlms-analysis-subtitle {
        font-size: 14px;
    }

    .mmlms-score-circle {
        width: 140px;
        height: 140px;
    }

    .mmlms-score-value {
        font-size: 36px;
    }

    .mmlms-score-label {
        font-size: 11px;
    }

    .mmlms-analysis-stats {
        grid-template-columns: 1fr;
        gap: 10px;
        margin-bottom: 24px;
    }

    .mmlms-stat-box {
        padding: 14px;
    }

    .mmlms-stat-icon {
        font-size: 24px;
        margin-bottom: 8px;
    }

    .mmlms-stat-label {
        font-size: 11px;
    }

    .mmlms-stat-value {
        font-size: 20px;
    }

    .mmlms-analysis-card {
        padding: 16px;
        margin-bottom: 16px;
    }

    .mmlms-analysis-card-title {
        font-size: 16px;
    }

    .mmlms-time-stats {
        grid-template-columns: 1fr;
    }

    .mmlms-time-item {
        padding: 12px;
    }

    .mmlms-time-value {
        font-size: 18px;
    }

    .mmlms-breakdown-item {
        gap: 4px;
    }

    .mmlms-breakdown-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .mmlms-difficulty-grid {
        grid-template-columns: 1fr;
    }

    .mmlms-improvement-item {
        padding: 12px;
    }

    .mmlms-improvement-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .mmlms-analysis-actions {
        flex-direction: column;
        gap: 8px;
        padding-top: 16px;
    }

    .mmlms-analysis-actions .mmlms-btn {
        width: 100%;
        padding: 12px;
        font-size: 14px;
    }
}

@media (max-width: 1200px) {
    .mmlms-main-layout {
        grid-template-columns: 55% 45%;
        gap: 16px;
        padding: 16px;
    }

    .mmlms-question-content-wrapper {
        padding: 24px;
    }

    .mmlms-sidebar-panel {
        top: 84px;
        max-height: calc(100vh - 102px);
    }
}

@media (max-width: 1024px) {
    .mmlms-main-layout {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 12px;
    }

    .mmlms-sidebar-panel {
        order: -1;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: visible;
        max-height: 160px;
        padding-bottom: 8px;
        position: static;
    }

    .mmlms-palette-card,
    .mmlms-solution-card,
    .mmlms-progress-card {
        flex: 1;
        min-width: 220px;
        max-height: 140px;
    }

    .mmlms-palette-content,
    .mmlms-solution-content,
    .mmlms-progress-content {
        max-height: 90px;
    }

    .mmlms-palette-grid {
        grid-template-columns: repeat(auto-fill, minmax(38px, 1fr));
        gap: 6px;
    }

    .mmlms-palette-btn {
        width: 36px;
        height: 36px;
        font-size: 11px;
    }

    .mmlms-question-text {
        font-size: 16px;
    }

    .mmlms-option {
        padding: 12px;
        gap: 10px;
    }

    .mmlms-option-letter {
        min-width: 28px;
        height: 28px;
        font-size: 13px;
    }

    .mmlms-analysis-stats,
    .mmlms-time-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mmlms-practice-modern {
        font-size: 14px;
    }

    .mmlms-screen-instructions {
        padding: 40px 12px;
        max-width: 100%;
    }

    .mmlms-header-card {
        padding: 24px;
        border-radius: var(--mmlms-radius-lg);
    }

    .mmlms-header-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 12px;
    }

    .mmlms-header-title .mmlms-header-label {
        font-size: 24px;
    }

    .mmlms-instruction-item {
        padding: 14px;
        gap: 12px;
        font-size: 13px;
    }

    .mmlms-instruction-icon {
        min-width: 28px;
        height: 28px;
        font-size: 12px;
    }

    .mmlms-btn-start {
        padding: 14px 28px;
        font-size: 16px;
        align-self: stretch;
    }

    .mmlms-start-section {
        flex-direction: column;
        gap: 16px;
    }

    .mmlms-start-confirmation {
        padding: 16px;
    }

    .mmlms-checkbox-label {
        font-size: 14px;
    }

    .mmlms-top-nav {
        padding: 12px 16px;
        flex-wrap: wrap;
        gap: 12px;
        position: static;
    }

    .mmlms-top-nav-title {
        font-size: 14px;
    }

    .mmlms-top-nav-meta {
        font-size: 12px;
        flex-wrap: wrap;
    }

    .mmlms-meta-item {
        padding: 2px 8px;
        font-size: 11px;
    }

    .mmlms-main-layout {
        padding: 8px;
    }

    .mmlms-question-panel {
        padding: 16px;
        gap: 12px;
    }

    .mmlms-question-toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .mmlms-question-content-wrapper {
        padding: 18px;
        border-radius: var(--mmlms-radius);
    }

    .mmlms-question-text {
        font-size: 15px;
        margin-bottom: 16px;
    }

    .mmlms-question-number {
        font-size: 12px;
        padding-bottom: 8px;
    }

    .mmlms-option {
        padding: 12px;
        gap: 10px;
        border-radius: var(--mmlms-radius);
    }

    .mmlms-option-letter {
        min-width: 28px;
        height: 28px;
        font-size: 12px;
        border-radius: var(--mmlms-radius-xs);
    }

    .mmlms-option-text {
        font-size: 13px;
    }

    .mmlms-btn-submit {
        width: 100%;
        padding: 12px;
        font-size: 14px;
    }

    .mmlms-arrow-nav {
        gap: 8px;
        padding-top: 12px;
    }

    .mmlms-arrow {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .mmlms-sidebar-panel {
        flex-direction: column;
        overflow: visible;
        max-height: none;
        gap: 12px;
        position: static;
    }

    .mmlms-palette-card,
    .mmlms-solution-card,
    .mmlms-progress-card {
        width: 100%;
        flex: 1 1 auto;
        padding: 16px;
        min-width: auto;
        max-height: none;
    }

    .mmlms-palette-header h4,
    .mmlms-solution-header h4,
    .mmlms-progress-header h4 {
        font-size: 13px;
    }

    .mmlms-palette-grid {
        grid-template-columns: repeat(5, minmax(40px, 1fr));
        gap: 8px;
    }

    .mmlms-palette-btn {
        width: 40px;
        min-width: 40px;
        height: 40px;
        min-height: 40px;
        font-size: 12px;
    }

    .mmlms-palette-number {
        min-width: 2ch;
        font-size: 12px;
    }

    .mmlms-solution-content {
        font-size: 13px;
        max-height: none;
    }

    .mmlms-progress-bar-container {
        height: 10px;
        margin: 10px 0;
    }

    .mmlms-analysis-container {
        padding: 24px 12px;
    }

    .mmlms-analysis-title {
        font-size: 24px;
    }

    .mmlms-score-circle {
        width: 180px;
        height: 180px;
    }

    .mmlms-score-value {
        font-size: 44px;
    }

    .mmlms-stat-box {
        padding: 18px;
    }

    .mmlms-stat-value {
        font-size: 24px;
    }

    .mmlms-analysis-card {
        padding: 20px;
    }

    .mmlms-analysis-actions {
        flex-direction: column;
        gap: 10px;
    }

    .mmlms-analysis-actions .mmlms-btn {
        width: 100%;
        padding: 12px;
        font-size: 14px;
    }

}

@media (max-width: 480px) {
    .mmlms-screen-instructions {
        padding: 24px 8px;
    }

    .mmlms-header-card {
        padding: 16px;
        border-radius: var(--mmlms-radius);
    }

    .mmlms-header-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .mmlms-header-title .mmlms-header-label {
        font-size: 20px;
    }

    .mmlms-header-label {
        font-size: 11px;
    }

    .mmlms-header-value {
        font-size: 13px;
    }

    .mmlms-instructions-list {
        gap: 8px;
    }

    .mmlms-instruction-item {
        padding: 10px;
        gap: 8px;
    }

    .mmlms-instruction-icon {
        min-width: 24px;
        height: 24px;
        font-size: 10px;
    }

    .mmlms-btn-start {
        padding: 12px 20px;
        font-size: 14px;
        width: 100%;
    }

    .mmlms-start-confirmation {
        padding: 14px;
    }

    .mmlms-start-checkbox {
        gap: 10px;
    }

    .mmlms-checkbox-custom {
        width: 20px;
        height: 20px;
    }

    .mmlms-checkbox-label {
        font-size: 13px;
    }

    .mmlms-top-nav {
        flex-direction: column;
        align-items: flex-start;
        padding: 8px 12px;
    }

    .mmlms-btn-end {
        width: 36px;
        height: 36px;
    }

    .mmlms-question-content-wrapper {
        padding: 14px;
    }

    .mmlms-question-text {
        font-size: 14px;
    }

    .mmlms-option {
        padding: 10px;
        border-radius: var(--mmlms-radius-sm);
    }

    .mmlms-option-letter {
        min-width: 26px;
        height: 26px;
        font-size: 11px;
    }

    .mmlms-palette-grid {
        grid-template-columns: repeat(4, minmax(38px, 1fr));
        gap: 8px;
    }

    .mmlms-palette-btn {
        width: 38px;
        min-width: 38px;
        height: 38px;
        min-height: 38px;
        font-size: 11px;
    }

    .mmlms-palette-number {
        min-width: 2ch;
        font-size: 11px;
    }

    .mmlms-question-text,
    .mmlms-option-text,
    .mmlms-solution-content,
    .mmlms-passage-box {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        word-break: break-word;
    }

    .mmlms-analysis-stats {
        grid-template-columns: 1fr;
    }

    .mmlms-score-circle {
        width: 140px;
        height: 140px;
    }

    .mmlms-score-value {
        font-size: 36px;
    }

    .mmlms-stat-value {
        font-size: 20px;
    }

    .mmlms-stats-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .mmlms-student-header h1 {
        font-size: 20px;
    }

    .mmlms-student-header p {
        font-size: 13px;
    }

    .mmlms-session-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .mmlms-session-score {
        text-align: left;
    }
}

/* ========================================
   ACCESSIBILITY (Utility Classes)
   ======================================== */
.mmlms-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 40px;
    color: var(--mmlms-gray-500);
}

.mmlms-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--mmlms-gray-200);
    border-top-color: var(--mmlms-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.mmlms-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* High Contrast Mode Support */
@media (prefers-contrast: more) {
    .mmlms-btn {
        border-width: 2px;
    }

    .mmlms-option {
        border-width: 3px;
    }

    .mmlms-palette-btn {
        border-width: 2px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support (if system supports) */
@media (prefers-color-scheme: dark) {
    /* Can be customized for dark mode support */
}

/* ========================================
   REQUIRED / OPTIONAL FIELD INDICATORS
   ======================================== */
.mmlms-required {
    color: var(--mmlms-danger, #ef4444);
    font-weight: 600;
}

.mmlms-optional {
    color: var(--mmlms-gray-500, #6b7280);
    font-weight: 400;
    font-size: 0.85em;
}

label .mmlms-required,
label .mmlms-optional {
    margin-left: 4px;
}

/* Printing Styles */
@media print {
    .mmlms-top-nav,
    .mmlms-arrow-nav,
    .mmlms-question-toolbar,
    .mmlms-btn-end,
    .mmlms-analysis-actions {
        display: none !important;
    }

    .mmlms-main-layout {
        grid-template-columns: 1fr;
    }

    .mmlms-sidebar-panel {
        display: none;
    }
}

/* ========================================
   OVERFLOW FIXES FOR CONTENT
   ======================================== */

/* General overflow handling for all content areas */
#question-container,
#solution-content,
.mmlms-question-content-wrapper,
.mmlms-analysis-container {
    max-width: 100%;
    overflow-x: hidden;
}

/* Ensure all text content wraps properly */
#question-container * ,
#solution-content *,
.mmlms-analysis-container * {
    max-width: 100%;
}

/* MathJax specific overflow fixes */
.mjx-chtml {
    max-width: 100% !important;
    overflow-x: auto !important;
    display: inline-block !important;
    vertical-align: middle;
}

.mjx-container {
    max-width: 100% !important;
}

/* Display math (block equations) */
.mjx-chtml.MJXc-display {
    display: block !important;
    overflow-x: auto !important;
    padding: 8px 0;
    margin: 8px 0;
}

/* Ensure images don't overflow */
#question-container img,
#solution-content img,
.mmlms-question-image img {
    max-width: 100%;
    height: auto;
}

/* Table overflow handling */
#question-container table,
#solution-content table {
    max-width: 100%;
    display: block;
    overflow-x: auto;
}

/* Pre/code blocks */
#question-container pre,
#solution-content pre {
    max-width: 100%;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Long words/URLs breaking */
#question-container,
#solution-content {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}