.courses-main {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
    min-height: 60vh;
}

.course-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    padding-bottom: 20px;
}

.tab-btn {
    background-color: #f1f5f9;
    color: #434656;
    border: 1px solid #cbd5e1;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
}

.tab-btn:hover {
    background-color: #e2e8f0;
    color: #203a6c;
}

.tab-btn.active {
    background-color: #203a6c;
    color: #ffffff;
    border-color: #203a6c;
}

.tab-content {
    display: none;
    padding: 10px 0;
}

.tab-content.active {
    display: block;
}

.tab-content h2 {
    color: #203a6c;
    font-size: 1.75rem;
    margin-bottom: 15px;
}

.tab-content p {
    color: #64748b;
    font-size: 1.05rem;
    line-height: 1.6;
}

.tutoring-main-title {
    color: #203a6c;
    font-size: 2rem;
    margin-bottom: 20px;
    text-align: left;
}

.tutoring-hero-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
    margin-top: 20px;
}

.tutoring-visual-showcase {
    display: flex;
    justify-content: center;
}

.tutoring-preview-card {
    position: relative;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 12px;
}

.tutoring-preview-card img {
    width: 100%;
    max-width: 480px;
    height: 280px;
    border-radius: 10px;
    object-fit: cover;
    display: block;
}

.tutoring-info-stack {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tutoring-perk-box {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.perk-content {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.tutoring-perk-box h3 {
    font-size: 1.05rem;
    color: #203a6c;
    margin-bottom: 6px;
    font-weight: 600;
}

.tutoring-perk-box p {
    font-size: 0.9rem;
    color: #64748b;
    line-height: 1.5;
    margin: 0 0 14px 0;
}

.card-action {
    display: flex;
    justify-content: flex-start;
    margin-top: 5px;
}

.concentration-btn {
    display: inline-block;
    background-color: #203a6c;
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
}

.concentration-btn:hover {
    background-color: #284785;
    transform: translateY(-2px);
}

.planning-intro {
    margin-bottom: 25px;
}

.planning-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.planning-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 24px;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    position: relative;
}

.planning-card:hover {
    transform: translateY(-3px);
    border-color: #203a6c;
}

.planning-icon {
    font-size: 1.8rem;
    color: #203a6c;
    margin-bottom: 12px;
}

.planning-card h3 {
    font-size: 1.15rem;
    color: #203a6c;
    margin-bottom: 6px;
    font-weight: 600;
}

.planning-card p {
    font-size: 0.9rem;
    color: #64748b;
    line-height: 1.4;
    margin: 0;
}

.faq-container {
    margin: 30px 0 45px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 18px 20px;
    font-size: 1.05rem;
    font-weight: 600;
    color: #203a6c;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question:hover {
    background-color: #f8fafc;
}

.faq-question i {
    font-size: 0.9rem;
    color: #64748b;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 20px;
    background-color: #ffffff;
}

.faq-answer p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-top: 18px;
    margin-bottom: 18px;
}

.faq-link {
    color: #203a6c;
    font-weight: 500;
    text-decoration: none;
    background: none;
    padding: 0;
    border-radius: 0;
}

.faq-link:hover {
    text-decoration: underline;
    background: none;
    color: #203a6c;
}

.contacts-section {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid #e2e8f0;
}

.contacts-section > h3 {
    font-size: 1.5rem;
    color: #203a6c;
    margin-bottom: 25px;
    text-align: center;
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.contact-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.contact-card h4 {
    font-size: 1.1rem;
    color: #203a6c;
    margin-bottom: 10px;
}

.copy-email-btn {
    background: none;
    border: none;
    padding: 0;
    margin: 0 0 15px 0;
    display: inline-block;
    cursor: pointer;
    text-align: left;
    width: fit-content;
}

.email-text {
    font-size: 0.95rem;
    color: #203a6c;
    font-weight: 500;
    font-family: inherit;
    text-decoration: none;
}

.copy-email-btn:hover .email-text {
    text-decoration: underline;
}

.contact-card ul {
    list-style-type: disc;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.contact-card ul li {
    font-size: 0.9rem;
    color: #64748b;
    line-height: 1.4;
}

body.dark-mode .course-tabs {
    border-bottom-color: #384f75;
}

body.dark-mode .tab-btn {
    background-color: #1a1a1a;
    color: #ccd3de;
    border-color: #384f75;
}

body.dark-mode .tab-btn:hover {
    background-color: #284785;
    color: #ffffff;
}

body.dark-mode .tab-btn.active {
    background-color: #284785;
    color: #ffffff;
    border-color: #384f75;
}

body.dark-mode .tutoring-main-title,
body.dark-mode .tab-content h2,
body.dark-mode .contacts-section > h3,
body.dark-mode .contact-card h4 {
    color: #ffffff;
}

body.dark-mode .tab-content p,
body.dark-mode .contact-card ul li {
    color: #94a3b8;
}

body.dark-mode .faq-link {
    background: none;
    color: #ccd3de;
}

body.dark-mode .faq-link:hover {
    background: none;
    color: #ccd3de;
    text-decoration: underline;
}

body.dark-mode .email-text {
    color: #ccd3de;
}

body.dark-mode .contacts-section {
    border-top-color: #384f75;
}

body.dark-mode .contact-card {
    background-color: #121212;
    border-color: #384f75;
}

body.dark-mode .tutoring-preview-card,
body.dark-mode .tutoring-perk-box {
    background-color: #121212;
    border-color: #384f75;
}

body.dark-mode .tutoring-perk-box:hover {
    border-color: #60a5fa;
}

body.dark-mode .tutoring-perk-box h3 {
    color: #ffffff;
}

body.dark-mode .tutoring-perk-box p {
    color: #94a3b8;
}

body.dark-mode .concentration-btn {
    background-color: #384f75;
    color: #ffffff;
}

body.dark-mode .concentration-btn:hover {
    background-color: #203a6c;
}

body.dark-mode .planning-card {
    background-color: #121212;
    border-color: #384f75;
}

body.dark-mode .planning-card:hover {
    border-color: #60a5fa;
}

body.dark-mode .planning-card h3 {
    color: #ffffff;
}

body.dark-mode .planning-icon {
    color: #60a5fa;
}

body.dark-mode .faq-item {
    background-color: #121212;
    border-color: #384f75;
}

body.dark-mode .faq-question {
    color: #ffffff;
}

body.dark-mode .faq-question:hover {
    background-color: #1a1a1a;
}

body.dark-mode .faq-question i {
    color: #94a3b8;
}

body.dark-mode .faq-answer {
    background-color: #121212;
}

body.dark-mode .faq-answer p {
    color: #94a3b8;
}

@media (max-width: 900px) {
    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .tutoring-hero-layout {
        grid-template-columns: 1fr;
    }

    .tutoring-preview-card img {
        max-width: 100%;
        height: 240px;
    }
}

@media (max-width: 768px) {
    .course-tabs {
        flex-direction: column;
        gap: 10px;
    }
    
    .tab-btn {
        width: 100%;
        text-align: center;
    }

    .tutoring-main-title {
        text-align: center;
    }

    .planning-grid {
        grid-template-columns: 1fr;
    }

    .concentration-btn {
        display: block;
        text-align: center;
        width: 100%;
    }
}