/* ============================================
   Bengali Learning Hub - Component Styles
   ============================================ */

/* ============================================
   Buttons - New Design
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    font-family: var(--font-family-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Primary Button - Orange (Take Quiz, Start Quiz, Submit) */
.btn-primary {
    background: var(--gradient-orange);
    color: var(--color-white);
    font-family: var(--font-family-display);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    box-shadow: var(--shadow-md), var(--shadow-orange);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg), var(--shadow-orange);
}

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
}

/* Secondary Button - Pink (Previous, Next, Play audio) */
.btn-secondary {
    background: var(--gradient-pink);
    color: var(--color-charcoal);
    font-family: var(--font-family-display);
    box-shadow: var(--shadow-sm), var(--shadow-pink);
    transition: var(--transition-bounce);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-pink);
}

.btn-secondary:active {
    transform: translateY(0);
}

/* Success Button */
.btn-success {
    background-color: var(--color-success);
    color: var(--color-black);
}

.btn-success:hover {
    background-color: #7FE57F;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Outline Button */
.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

/* Icon Button */
.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* Large Button */
.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-xl);
}

/* Small Button */
.btn-sm {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
}

/* Disabled State */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Quiz Options - Enhanced with Animations */
.quiz-option {
    display: block;
    width: 100%;
    background: var(--color-cream-base);
    color: var(--color-charcoal);
    border-radius: var(--radius-3xl);
    padding: var(--space-5) var(--space-6);
    font-family: var(--font-family-ui);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    border: 3px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-bottom: var(--space-4);
    text-align: left;
    box-shadow: var(--shadow-sm);
}

.quiz-option:hover:not(.selected):not(.correct):not(.incorrect) {
    border-color: var(--color-orange-vivid);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.quiz-option.selected {
    background: var(--color-cream-rich) !important;
    border-color: var(--color-orange-vivid) !important;
    box-shadow: var(--shadow-md), var(--shadow-orange) !important;
    transform: translateX(8px);
}

.quiz-option.correct {
    background: var(--color-green-meadow);
    border-color: var(--color-success);
    box-shadow: var(--shadow-md), var(--shadow-green);
    animation: correctPulse 0.5s ease-out;
}

.quiz-option.incorrect {
    background: #FFD0D0;
    border-color: var(--color-error);
    animation: shake 0.4s ease-out;
}

/* Quiz Option Animations */
@keyframes correctPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-8px); }
    20%, 40%, 60%, 80% { transform: translateX(8px); }
}

/* ============================================
   Cards
   ============================================ */

.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-clickable {
    cursor: pointer;
}

.card-clickable:hover {
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.card-body {
    color: var(--color-gray-600);
}

.card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
}

/* Module Card */
.module-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-xl);
    min-height: 200px;
}

.module-card-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary-light);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

.module-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.module-card-bengali {
    font-family: var(--font-family-bengali);
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Progress Bar - New Design
   ============================================ */

.progress-bar {
    width: 100%;
    height: 24px;
    background: var(--color-cream-base);
    border-radius: var(--radius-3xl);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-inner);
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-orange);
    border-radius: var(--radius-3xl);
    transition: width var(--duration-slow) var(--ease-out);
    position: relative;
}

.progress-bar-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.3) 0%, transparent 100%);
    border-radius: var(--radius-3xl) var(--radius-3xl) 0 0;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    bottom: -2px;
    width: 40px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(300%); }
}

.progress-bar-sm {
    height: 16px;
}

.progress-bar-lg {
    height: 32px;
}

.progress-bar-success .progress-bar-fill {
    background: linear-gradient(135deg, var(--color-green-fresh) 0%, var(--color-success) 100%);
}

.progress-bar-warning .progress-bar-fill {
    background: linear-gradient(135deg, #FBBF24 0%, var(--color-warning) 100%);
}

/* Progress with percentage label */
.progress-with-label {
    position: relative;
}

.progress-percentage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-family-display);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    z-index: 1;
    pointer-events: none;
}

/* Module Progress Bar (for module pages) */
.module-progress-bar {
    width: 100%;
    height: 24px;
    background-color: var(--color-cream);
    border-radius: var(--radius-3xl);
    overflow: hidden;
    margin-bottom: var(--space-4);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.module-progress-fill {
    height: 100%;
    background-color: var(--color-primary);
    border-radius: var(--radius-3xl);
    transition: width 0.3s ease;
}

/* Quiz Progress Bar */
.quiz-progress-bar {
    width: 100%;
    height: 20px;
    background-color: var(--color-cream);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.quiz-progress-fill {
    height: 100%;
    background-color: var(--color-primary);
    border-radius: var(--radius-2xl);
    transition: width 0.3s ease;
}

/* Progress with label */
.progress-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.progress-label {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* ============================================
   Modal - Enhanced
   ============================================ */

.modal-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    animation: fadeIn var(--duration-base);
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    animation: fadeIn var(--duration-base);
}

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

.modal-content {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-modal);
    box-shadow: var(--shadow-2xl);
    max-width: 540px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideUp var(--duration-base) var(--ease-bounce);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 2px solid var(--color-gray-100);
}

.modal-title {
    font-family: var(--font-family-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-charcoal);
}

.modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--color-gray-600);
    transition: var(--transition-bounce);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-xl);
}

.modal-close:hover {
    background: var(--color-gray-100);
    color: var(--color-charcoal);
    transform: scale(1.1);
}

.modal-body {
    padding: var(--space-8);
    font-family: var(--font-family-ui);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-charcoal);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-6);
    border-top: 2px solid var(--color-gray-100);
}

/* Achievement & Level-Up Celebration Modals */
.modal-celebration {
    background: var(--gradient-sky);
    border: 4px solid var(--color-orange-vivid);
    box-shadow: var(--shadow-2xl), 0 0 40px rgba(255, 140, 0, 0.4);
    position: relative;
    overflow: visible;
}

.modal-celebration::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-orange);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    box-shadow: var(--shadow-xl), var(--shadow-orange);
    border: 4px solid var(--color-white);
    animation: celebrationBadgeBounce 0.6s var(--ease-bounce) 0.3s backwards;
}

.modal-celebration.achievement::before {
    content: '🏆';
}

.modal-celebration.level-up::before {
    content: '⭐';
}

@keyframes celebrationBadgeBounce {
    0% {
        transform: translateX(-50%) translateY(20px) scale(0);
        opacity: 0;
    }
    50% {
        transform: translateX(-50%) translateY(-10px) scale(1.1);
    }
    100% {
        transform: translateX(-50%) translateY(0) scale(1);
        opacity: 1;
    }
}

.modal-celebration .modal-header {
    border-bottom: none;
    padding-top: var(--space-10);
    text-align: center;
    flex-direction: column;
}

.modal-celebration .modal-title {
    font-size: var(--font-size-3xl);
    color: var(--color-white);
    -webkit-text-stroke: 2px var(--color-charcoal);
    paint-order: stroke fill;
    text-shadow: var(--text-shadow-outline);
    animation: titleBounceIn 0.8s var(--ease-bounce) 0.5s backwards;
}

.modal-celebration .modal-body {
    text-align: center;
    padding: var(--space-6) var(--space-8);
    color: var(--color-charcoal);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

.modal-celebration .modal-footer {
    border-top: none;
    justify-content: center;
    padding-bottom: var(--space-8);
}

/* Confetti effect for celebration modals */
.modal-celebration::after {
    content: '🎊 🎉 ✨ 🌟 💫';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    animation: confettiScatter 1.5s ease-out 0.8s backwards;
    pointer-events: none;
    white-space: nowrap;
    letter-spacing: var(--space-4);
}

@keyframes confettiScatter {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(0) scale(0);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) translateY(-30px) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(-60px) scale(0.8) rotate(360deg);
    }
}

/* Level-up specific styles */
.level-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--gradient-orange);
    border-radius: var(--radius-full);
    font-family: var(--font-family-display);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    box-shadow: var(--shadow-xl), var(--shadow-orange);
    margin: var(--space-4) auto;
    animation: scaleIn 0.5s var(--ease-bounce) 0.6s backwards;
}

@keyframes scaleIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.15);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Achievement unlock animation */
.achievement-unlock {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
}

.achievement-icon {
    font-size: 5rem;
    animation: wiggle 0.8s ease-in-out 0.4s backwards;
}

@keyframes wiggle {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-10deg);
    }
    75% {
        transform: rotate(10deg);
    }
}

.achievement-name {
    font-family: var(--font-family-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-charcoal);
    animation: fadeInUp 0.6s ease-out 0.7s backwards;
}

.achievement-description {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    text-align: center;
    max-width: 300px;
    animation: fadeInUp 0.6s ease-out 0.9s backwards;
}

/* ============================================
   Badge / Tag
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
}

.badge-primary {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.badge-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

/* ============================================
   Alert / Notification
   ============================================ */

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.alert-icon {
    flex-shrink: 0;
    font-size: var(--font-size-lg);
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   Toast Notification
   ============================================ */

.toast-container {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-md));
    right: var(--spacing-md);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-gray-800);
    color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn var(--transition-base);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-success {
    background-color: var(--color-success);
}

.toast-error {
    background-color: var(--color-error);
}

.toast-points {
    background-color: var(--color-accent);
}

/* ============================================
   Form Elements
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-input:disabled {
    background-color: var(--color-gray-100);
    cursor: not-allowed;
}

/* Toggle Switch */
.toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 28px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-gray-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: var(--color-white);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle input:checked + .toggle-slider {
    background-color: var(--color-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

/* ============================================
   Grid Layouts
   ============================================ */

.grid {
    display: grid;
    gap: var(--spacing-md);
}

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

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

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* ============================================
   Achievement Badge
   ============================================ */

.achievement {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-lg);
}

.achievement-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: var(--color-accent);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
}

.achievement-locked .achievement-icon {
    background-color: var(--color-gray-300);
}

.achievement-info {
    flex: 1;
}

.achievement-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.achievement-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ============================================
   Stats Display
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Points Floater Animation
   ============================================ */

.points-floater {
    position: absolute;
    top: -10px;
    right: 0;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    animation: floatUp 1s ease-out forwards;
    pointer-events: none;
}

@keyframes floatUp {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-30px);
    }
}

/* Header stat tooltips */
.stat-item {
    position: relative;
}

.stat-item::after {
    content: attr(data-tooltip);
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-gray-800);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 100;
    margin-top: var(--spacing-xs);
}

.stat-item:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Empty State
   ============================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-100);
    color: var(--color-gray-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.empty-state-desc {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
    max-width: 400px;
}

/* ============================================
   Danger Button
   ============================================ */

.btn-danger {
    background-color: var(--color-error);
    color: var(--color-white);
}

.btn-danger:hover {
    background-color: #dc2626;
}

/* ============================================
   Modal Content Styles
   ============================================ */

.message-modal {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
}

.message-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.message-text {
    color: var(--color-gray-600);
    line-height: 1.6;
}

.achievement-modal {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
}

.achievement-icon-large {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    animation: achievementPop 0.5s ease-out;
}

@keyframes achievementPop {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.level-up-modal {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
}

.level-badge {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    animation: levelPop 0.5s ease-out;
}

.level-number {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
}

@keyframes levelPop {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    100% {
        transform: scale(1) rotate(0);
        opacity: 1;
    }
}

/* ============================================
   Form Control (Select)
   ============================================ */

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* ============================================
   Tab Buttons
   ============================================ */

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    background: var(--gradient-orange);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-button);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family-display);
    letter-spacing: var(--letter-spacing-wide);
    cursor: pointer;
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-sm), var(--shadow-orange);
    min-height: 56px;
    justify-content: center;
}

.tab-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-md), var(--shadow-orange);
}

.tab-btn.active {
    background: var(--gradient-orange);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-orange), 0 0 0 3px rgba(255, 140, 0, 0.2);
}

.tab-btn i {
    font-size: var(--font-size-lg);
}

.tab-bengali {
    font-family: var(--font-family-bengali);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    opacity: 0.95;
}

/* ============================================
   New Design Components
   ============================================ */

/* Hero Section - Enhanced */
.hero-section {
    text-align: center;
    margin-bottom: var(--space-12);
    padding: calc(var(--space-8) + var(--nav-height)) 0;
    animation: fadeInUp 0.6s ease-out;
    position: relative;
    overflow: visible;
    z-index: 10; /* Lower than navigation (300) - allows clicks on mobile */
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Module Button (for home page) - Enhanced */
.module-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    background: var(--gradient-pink);
    color: var(--color-charcoal);
    border-radius: var(--radius-3xl);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-family-display);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    text-decoration: none;
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-sm), var(--shadow-pink);
    margin: var(--space-2);
    cursor: pointer;
    position: relative;
    overflow: visible;
}

.module-button:hover {
    transform: translateY(-6px) rotate(-1deg) scale(1.03);
    box-shadow: var(--shadow-lg), var(--shadow-pink);
}

.module-button:hover .module-button-icon {
    animation: wiggle 0.5s ease-in-out;
}

.module-button::before {
    content: '';
    position: absolute;
    top: -3px;
    right: -3px;
    width: 16px;
    height: 16px;
    background: var(--color-orange-vivid);
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition-fast);
}

.module-button:hover::before {
    opacity: 1;
    animation: pulse 1s infinite;
}

.module-button-icon {
    font-size: var(--font-size-2xl);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-10deg); }
    75% { transform: rotate(10deg); }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.7;
    }
}

/* Module Grid for Home Page */
.modules-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

/* Achievements Section - Enhanced */
.achievements-section {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    margin-top: var(--space-12);
    box-shadow: var(--shadow-sm);
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    padding: var(--space-5);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    cursor: pointer;
}

.achievement-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.achievement-item .icon {
    font-size: var(--font-size-3xl);
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-orange);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md), var(--shadow-orange);
    flex-shrink: 0;
}

.achievement-item p {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-charcoal);
    line-height: var(--line-height-snug);
}

.achievement-item.locked {
    opacity: 0.5;
    filter: grayscale(100%);
}

.achievement-item.locked:hover {
    transform: none;
}

/* Split-Screen Layout (Module & Quiz Pages) */
.split-container {
    display: flex;
    gap: var(--spacing-xl);
    min-height: 600px;
}

.split-left {
    flex: 0 0 40%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.split-right {
    flex: 1;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
}

/* Category Selector / Flashcard Area */
.category-selector {
    background-color: var(--color-secondary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
}

.flashcard-area {
    background-color: var(--color-secondary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

/* Navigation Buttons (Previous/Next) */
.navigation-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Quiz Container */
.quiz-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.quiz-header p {
    font-family: var(--font-family-display);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2);
    color: var(--color-charcoal);
}

.question-text {
    font-family: var(--font-family-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--space-6);
    color: var(--color-charcoal);
    line-height: var(--line-height-snug);
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

/* Quiz Intro Section */
.quiz-intro {
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    margin-top: var(--space-8);
    text-align: center;
}

.quiz-intro h3 {
    font-family: var(--font-family-display);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-4);
    color: var(--color-charcoal);
}

.quiz-intro p {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-4);
    color: var(--color-charcoal);
    line-height: var(--line-height-relaxed);
}

.quiz-intro ul {
    list-style-position: inside;
    list-style-type: disc;
    text-align: left;
    max-width: 600px;
    margin: 0 auto var(--space-6);
    font-family: var(--font-family-ui);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    color: var(--color-gray-700);
    line-height: var(--line-height-relaxed);
}

.quiz-intro ul li {
    margin-bottom: var(--space-3);
}

/* Module Grid for Home Page - Enhanced */
.modules-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

/* Staggered fade-in animation for module buttons */
.module-button {
    animation: fadeInUp 0.6s ease-out backwards;
}

/* Decorative elements for dashboard */
.dashboard {
    position: relative;
}

/* Add subtle decorative background elements */
.hero-section::before {
    content: '🐟';
    position: absolute;
    top: 20%;
    left: 5%;
    font-size: 3rem;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

.hero-section::after {
    content: '🎨';
    position: absolute;
    top: 15%;
    right: 8%;
    font-size: 2.5rem;
    opacity: 0.3;
    animation: float 5s ease-in-out infinite 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

/* Achievement section title */
.achievements-section h2 {
    animation: fadeInUp 0.6s ease-out 1.2s backwards;
}

/* Stagger achievement items */
.achievement-item:nth-child(2) {
    animation: fadeInUp 0.6s ease-out 1.3s backwards;
}

.achievement-item:nth-child(3) {
    animation: fadeInUp 0.6s ease-out 1.4s backwards;
}

.achievement-item:nth-child(4) {
    animation: fadeInUp 0.6s ease-out 1.5s backwards;
}

/* ============================================
   FLOATING POINTS ANIMATION - Enhanced
   ============================================ */

.points-floater {
    position: fixed;
    top: 20%;
    right: 10%;
    font-family: var(--font-family-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-orange-vivid);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    animation: floatUpPoints 2s ease-out forwards;
    pointer-events: none;
    z-index: var(--z-toast);
}

.points-floater::before {
    content: '+';
    margin-right: 2px;
}

.points-floater::after {
    content: ' pts';
    font-size: var(--font-size-base);
    margin-left: 2px;
}

@keyframes floatUpPoints {
    0% {
        opacity: 1;
        transform: translateY(0) scale(0.5);
    }
    20% {
        transform: translateY(-20px) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translateY(-120px) scale(0.8);
    }
}

/* Success feedback effect */
.success-flash {
    animation: successFlash 0.5s ease-out;
}

@keyframes successFlash {
    0%, 100% {
        background-color: transparent;
    }
    50% {
        background-color: rgba(144, 238, 144, 0.3);
    }
}

/* Error feedback effect */
.error-shake {
    animation: errorShake 0.5s ease-out;
}

@keyframes errorShake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-10px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(10px);
    }
}

/* Level up burst effect */
.level-up-burst {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-6xl);
    font-family: var(--font-family-display);
    font-weight: var(--font-weight-bold);
    color: var(--color-orange-vivid);
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    animation: levelUpBurst 1.5s ease-out forwards;
    pointer-events: none;
    z-index: var(--z-max);
}

@keyframes levelUpBurst {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0);
    }
    30% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.3);
    }
    70% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
}

/* ============================================
   Modules Page Styles
   ============================================ */

.modules-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

/* Page Header */
.modules-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-2xl) 0;
    border-bottom: 3px solid var(--color-cream-base);
}

.modules-title {
    font-family: var(--font-family-display);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-orange-vivid);
    margin-bottom: var(--spacing-md);
}

.modules-subtitle {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
}

/* Categories Container */
.modules-categories {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

/* Module Category */
.module-category {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}

.module-category:hover {
    box-shadow: var(--shadow-md);
}

/* Category Header */
.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--color-cream-light);
}

.category-info {
    flex: 1;
}

.category-name {
    font-family: var(--font-family-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-charcoal);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.category-name-bengali {
    font-family: var(--font-family-bengali);
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.category-description {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin: 0;
}

.category-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.module-count {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    background: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-semibold);
}

/* Category Modules Grid */
.category-modules {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
}

/* Module Card */
.module-card {
    display: flex;
    flex-direction: column;
    background: var(--color-white);
    border: 2px solid var(--color-cream-base);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.module-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-orange-bright);
}

.module-card:focus {
    outline: 2px solid var(--color-orange-vivid);
    outline-offset: 2px;
}

/* Module Card Header */
.module-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.module-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-2xl);
}

/* Difficulty Badge */
.difficulty-badge {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty-badge.beginner {
    background: #d4edda;
    color: #155724;
}

.difficulty-badge.intermediate {
    background: #fff3cd;
    color: #856404;
}

.difficulty-badge.advanced {
    background: #f8d7da;
    color: #721c24;
}

.difficulty-badge.all-levels {
    background: #d1ecf1;
    color: #0c5460;
}

/* Module Card Body */
.module-card-body {
    flex: 1;
    margin-bottom: var(--spacing-lg);
}

.module-card-title {
    font-family: var(--font-family-display);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-charcoal);
    margin-bottom: var(--spacing-sm);
}

.module-card-description {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.5;
    margin: 0;
}

/* Module Card Footer */
.module-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.module-progress {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.progress-bar-small {
    flex: 1;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width var(--transition-fast);
}

.progress-text {
    font-family: var(--font-family-ui);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
    min-width: 45px;
    text-align: right;
}

/* Module Status */
.module-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-family-display);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.module-status.new {
    background: var(--color-sky-base);
    color: var(--color-white);
}

.module-status.in-progress {
    background: var(--color-orange-bright);
    color: var(--color-white);
}

.module-status.completed {
    background: var(--color-green-spring);
    color: var(--color-charcoal);
}

/* Completed Overlay */
.completed-overlay {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-green-spring);
    color: var(--color-white);
    border-radius: 50%;
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .modules-page {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .modules-title {
        font-size: var(--font-size-2xl);
    }

    .category-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .category-modules {
        grid-template-columns: 1fr;
        padding: var(--spacing-lg);
    }

    .module-card-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .module-status {
        justify-content: center;
    }
}