/* ============================================================
   صفحة الدرس التفاعلي - Lesson Page Styles
   ============================================================ */

/* شريط معلومات الدرس */
.lesson-info-bar {
    background: linear-gradient(135deg, #0a4a33 0%, #0F6244 50%, #1a8a64 100%);
    color: var(--color-white);
    padding: 56px 0 40px;
    position: relative;
    overflow: hidden;
}

.lesson-info-bar::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 80% 20%, rgba(200, 160, 78, .15), transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(232, 201, 125, .10), transparent 50%);
}

.lesson-info-content {
    position: relative;
}

.lesson-meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.meta-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
}

.lesson-title {
    font-family: 'Cairo', sans-serif;
    font-size: 40px;
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 10px;
}

.lesson-emoji {
    display: inline-block;
    font-family: 'Amiri', serif;
    font-size: 42px;
    color: var(--color-gold-light);
    margin-left: 14px;
    padding: 4px 14px;
    background: rgba(200, 160, 78, .15);
    border-radius: 12px;
    border: 1px solid rgba(200, 160, 78, .3);
}

.lesson-subtitle {
    font-size: 17px;
    opacity: .9;
    margin-bottom: 28px;
}

.lesson-progress-wrap {
    max-width: 720px;
    padding: 20px 24px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
}

.lesson-progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: 600;
}

.lesson-progress-bar {
    height: 10px;
    background: rgba(255,255,255,.15);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 16px;
}

.lesson-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
    border-radius: 999px;
    width: 0%;
    transition: width .5s ease;
}

.lesson-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255,255,255,.06);
    border-radius: 999px;
    font-size: 13px;
    color: rgba(255,255,255,.7);
    border: 1px solid transparent;
    transition: var(--transition-fast);
}

.step-item.active {
    background: rgba(200, 160, 78, .25);
    border-color: var(--color-gold);
    color: var(--color-gold-light);
}

.step-item i {
    font-size: 12px;
}

/* تخطيط الدرس الرئيسي */
.lesson-main {
    padding: 56px 0;
    background: var(--color-bg);
}

.lesson-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 32px;
    align-items: start;
}

/* الشريط الجانبي */
.lesson-sidebar {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 22px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.sidebar-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-card h3 i {
    color: var(--color-gold);
}

.lesson-toc li {
    margin-bottom: 6px;
}

.toc-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text-soft);
    font-weight: 600;
    transition: var(--transition-fast);
}

.toc-link:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

.toc-link.active {
    background: linear-gradient(135deg, rgba(15, 98, 68, .08), rgba(200, 160, 78, .08));
    color: var(--color-primary);
}

.toc-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 24px;
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    font-size: 11px;
    font-weight: 700;
    border-radius: 6px;
    padding: 0 6px;
}

.toc-link.active .toc-num {
    background: var(--color-primary);
    color: var(--color-white);
}

.resource-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    color: var(--color-text);
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

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

.resource-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.resource-btn i {
    color: var(--color-gold);
    width: 20px;
}

.resource-btn:hover i,
.resource-btn.active i {
    color: var(--color-gold-light);
}

.tips-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--color-text-soft);
    line-height: 1.6;
}

.tips-list i {
    color: var(--color-primary);
    margin-top: 4px;
    flex-shrink: 0;
}

/* محتوى الدروس */
.lesson-content {
    background: transparent;
}

.lesson-section {
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--radius-xl);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    scroll-margin-top: 100px;
}

.section-number {
    display: inline-block;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-gold-light);
    font-size: 18px;
    font-weight: 800;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    font-family: 'Cairo', sans-serif;
}

.section-heading {
    font-family: 'Cairo', sans-serif;
    font-size: 30px;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
    line-height: 1.3;
}

.section-intro-text {
    font-size: 16px;
    color: var(--color-text-soft);
    line-height: 1.8;
    margin-bottom: 28px;
    padding: 16px 20px;
    background: var(--color-bg-alt);
    border-right: 4px solid var(--color-gold);
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* بطاقة المقدمة */
.intro-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    padding: 28px;
    background: linear-gradient(135deg, rgba(15, 98, 68, .04), rgba(200, 160, 78, .04));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.intro-icon-wrap {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-gold-light);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    flex-shrink: 0;
}

.lead-text {
    font-size: 17px;
    line-height: 1.9;
    color: var(--color-text);
    margin-bottom: 14px;
}

.intro-card p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-soft);
}

/* شبكة المعلومات */
.info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.info-card {
    background: linear-gradient(135deg, var(--color-bg-alt), var(--color-bg));
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--color-primary);
}

.info-card-icon {
    width: 50px;
    height: 50px;
    background: var(--color-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    color: var(--color-primary);
    font-size: 22px;
    box-shadow: var(--shadow-sm);
}

.info-card h4 {
    font-family: 'Cairo', sans-serif;
    font-size: 28px;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 4px;
}

.info-card p {
    font-size: 13px;
    color: var(--color-text-soft);
    font-weight: 600;
}

.action-row {
    text-align: center;
    margin-top: 24px;
}

/* الحروف */
.letters-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.letters-tab {
    padding: 10px 20px;
    background: var(--color-bg-alt);
    color: var(--color-text-soft);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.letters-tab:hover {
    background: var(--color-bg);
}

.letters-tab.active {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow);
}

.letters-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 14px;
}

.letter-card {
    background: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px 10px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

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

.letter-card.sun { border-top: 3px solid #F59E0B; }
.letter-card.moon { border-top: 3px solid #6366F1; }
.letter-card.neutral { border-top: 3px solid var(--color-primary); }

.letter-char {
    font-family: 'Amiri', serif;
    font-size: 48px;
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1;
    margin-bottom: 6px;
}

.letter-name {
    font-size: 12px;
    color: var(--color-text-soft);
    font-weight: 600;
    margin-bottom: 4px;
}

.letter-trans {
    font-size: 11px;
    color: var(--color-text-muted);
    direction: ltr;
    font-family: Arial, sans-serif;
    font-weight: 700;
}

.letter-play-icon {
    position: absolute;
    bottom: 8px;
    left: 8px;
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    opacity: 0;
    transition: var(--transition);
}

.letter-card:hover .letter-play-icon {
    opacity: 1;
}

/* أصوات الحروف */
.sound-categories {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.sound-category {
    background: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 22px;
    transition: var(--transition);
}

.sound-category:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
}

.sound-cat-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px dashed var(--color-border);
}

.sound-cat-header > i {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-gold-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.sound-cat-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 2px;
}

.sound-cat-header p {
    font-size: 13px;
    color: var(--color-text-muted);
}

.sound-letters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.sound-letter {
    background: linear-gradient(135deg, rgba(15, 98, 68, .08), rgba(200, 160, 78, .08));
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 10px 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sound-letter:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.sound-letter:hover small {
    color: rgba(255,255,255,.8);
}

.sound-letter {
    font-size: 24px;
    font-weight: 800;
    font-family: 'Amiri', serif;
    color: var(--color-primary);
}

.sound-letter small {
    font-family: 'Cairo', sans-serif;
    font-size: 12px;
    color: var(--color-text-muted);
    font-weight: 600;
}

/* أشكال الحروف */
.forms-explorer {
    background: linear-gradient(135deg, var(--color-bg-alt), var(--color-bg));
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.forms-controls {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.forms-controls label {
    font-weight: 700;
    color: var(--color-text);
}

.letter-select {
    padding: 10px 16px;
    background: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary-dark);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: 'Amiri', serif;
}

.letter-select:focus {
    border-color: var(--color-primary);
    outline: none;
}

.forms-display {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.form-display-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.form-label {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    font-weight: 700;
}

.form-big-letter {
    font-family: 'Amiri', serif;
    font-size: 64px;
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1;
}

.forms-words {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 16px;
    background: var(--color-white);
    border-radius: var(--radius);
}

.word-badge {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 10px 16px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.word-badge span {
    font-size: 12px;
    opacity: .85;
    direction: ltr;
    font-family: Arial, sans-serif;
}

/* تدريب الكتابة */
.writing-practice {
    background: var(--color-bg-alt);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
}

.practice-letter-display {
    background: var(--color-white);
    display: inline-block;
    padding: 32px 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.practice-letter {
    font-family: 'Amiri', serif;
    font-size: 120px;
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1;
    margin-bottom: 8px;
}

.practice-name {
    font-size: 18px;
    color: var(--color-text-soft);
    font-weight: 700;
    margin-bottom: 4px;
}

.practice-trans {
    font-size: 14px;
    color: var(--color-text-muted);
    direction: ltr;
    font-family: Arial, sans-serif;
    font-weight: 700;
}

.practice-controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.practice-trace {
    background: var(--color-white);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.practice-trace h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}

.practice-trace p {
    font-size: 14px;
    color: var(--color-text-soft);
    margin-bottom: 16px;
}

#traceCanvas {
    background: var(--color-bg-alt);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    cursor: crosshair;
    touch-action: none;
    max-width: 100%;
}

.practice-tips {
    background: var(--color-white);
    padding: 20px;
    border-radius: var(--radius);
    border-right: 4px solid var(--color-gold);
    text-align: right;
}

.practice-tips h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.practice-tips h4 i {
    color: var(--color-gold);
}

.practice-tips ul {
    list-style: none;
}

.practice-tips li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--color-text-soft);
    position: relative;
    padding-right: 20px;
}

.practice-tips li::before {
    content: '◆';
    position: absolute;
    right: 0;
    color: var(--color-gold);
    font-size: 12px;
    top: 8px;
}

/* الاختبار */
.quiz-container {
    background: linear-gradient(135deg, rgba(200, 160, 78, .05), rgba(15, 98, 68, .05));
    border: 2px solid var(--color-gold);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.quiz-question {
    display: none;
}

.quiz-question.active {
    display: block;
    animation: fadeInUp .5s ease-out;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.quiz-number {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 14px;
}

.quiz-timer {
    font-size: 14px;
    color: var(--color-gold);
    font-weight: 700;
    background: rgba(200, 160, 78, .1);
    padding: 4px 12px;
    border-radius: 999px;
}

.quiz-timer i {
    margin-left: 4px;
}

.quiz-q {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
    line-height: 1.5;
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-bottom: 20px;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    transition: var(--transition);
    text-align: right;
}

.quiz-option:hover:not(:disabled) {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    background: var(--color-bg-alt);
}

.quiz-option:disabled {
    cursor: not-allowed;
}

.quiz-option.selected {
    border-color: var(--color-primary);
    background: rgba(15, 98, 68, .08);
}

.quiz-option.correct {
    border-color: #10B981;
    background: rgba(16, 185, 129, .1);
    animation: pulse .5s ease;
}

.quiz-option.incorrect {
    border-color: #EF4444;
    background: rgba(239, 68, 68, .1);
    animation: shake .3s ease;
}

.opt-letter {
    font-family: 'Amiri', serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary-dark);
    width: 50px;
    text-align: center;
    flex-shrink: 0;
}

.opt-name {
    font-size: 14px;
    color: var(--color-text-soft);
    font-weight: 600;
}

.quiz-feedback {
    padding: 16px 20px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    display: none;
}

.quiz-feedback.show {
    display: block;
    animation: fadeInUp .3s ease-out;
}

.quiz-feedback.success {
    background: rgba(16, 185, 129, .12);
    color: #047857;
    border: 1px solid rgba(16, 185, 129, .3);
}

.quiz-feedback.error {
    background: rgba(239, 68, 68, .12);
    color: #B91C1C;
    border: 1px solid rgba(239, 68, 68, .3);
}

.quiz-feedback i {
    margin-left: 6px;
    font-size: 18px;
    vertical-align: middle;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 24px;
    gap: 12px;
}

.quiz-navigation .btn:disabled {
    opacity: .5;
    cursor: not-allowed;
}

.quiz-result {
    text-align: center;
    padding: 40px 20px;
}

.result-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 48px;
    box-shadow: var(--shadow-gold);
    animation: pulse 1s ease infinite;
}

.quiz-result h2 {
    font-family: 'Cairo', sans-serif;
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}

.quiz-result p {
    font-size: 17px;
    color: var(--color-text-soft);
    margin-bottom: 28px;
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 500px;
    margin: 0 auto 28px;
}

.result-stat {
    background: var(--color-white);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.result-stat-num {
    font-family: 'Cairo', sans-serif;
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 4px;
}

.result-stat-label {
    font-size: 13px;
    color: var(--color-text-soft);
    font-weight: 600;
}

.result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* أزرار أسفل الدرس */
.lesson-bottom-actions {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 24px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    flex-wrap: wrap;
}

/* التجاوب */
@media (max-width: 1024px) {
    .lesson-layout { grid-template-columns: 1fr; }
    .lesson-sidebar { position: static; }
    .letters-grid { grid-template-columns: repeat(6, 1fr); }
}

@media (max-width: 768px) {
    .lesson-info-bar { padding: 36px 0 24px; }
    .lesson-title { font-size: 28px; }
    .lesson-emoji { font-size: 30px; padding: 4px 10px; }
    .lesson-subtitle { font-size: 15px; }
    .lesson-steps { gap: 6px; }
    .step-item { font-size: 12px; padding: 4px 8px; }

    .lesson-main { padding: 32px 0; }
    .lesson-section { padding: 24px 18px; }
    .section-heading { font-size: 22px; }

    .intro-card { grid-template-columns: 1fr; padding: 20px; }
    .intro-icon-wrap { width: 60px; height: 60px; font-size: 26px; margin: 0 auto; }

    .info-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .info-card { padding: 16px 12px; }
    .info-card h4 { font-size: 22px; }

    .letters-grid { grid-template-columns: repeat(4, 1fr); }
    .letter-char { font-size: 36px; }
    .letter-card { padding: 16px 8px; }

    .forms-display { grid-template-columns: repeat(2, 1fr); }
    .form-big-letter { font-size: 50px; }
    .forms-controls { flex-direction: column; align-items: stretch; }

    .practice-letter { font-size: 80px; }
    .practice-letter-display { padding: 20px; }

    .quiz-options { grid-template-columns: 1fr; }
    .quiz-q { font-size: 17px; }
    .opt-letter { font-size: 26px; width: 40px; }
    .quiz-container { padding: 20px; }

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

    .lesson-bottom-actions { flex-direction: column; }
    .lesson-bottom-actions .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
    .letters-grid { grid-template-columns: repeat(3, 1fr); }
    .form-display-item { padding: 12px; }
    .form-big-letter { font-size: 40px; }
    .practice-letter { font-size: 60px; }
}