body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .menu ul {
        flex-direction: column;
        width: 100%;
        margin-top: 10px;
    }

    .menu li {
        margin: 5px 0;
    }

    .menu a {
        display: block;
        width: 100%;
    }

    .haber-alani {
        flex-direction: column;
    }

    .duyurular {
        position: static;
        max-width: 100%;
    }

    .yan-haberler {
        position: static;
        max-width: 100%;
    }

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

    .info-features {
        flex-direction: column;
    }

    .logo {
        width: 70px;
        height: 70px;
    }

    .main-title {
        font-size: 16px;
    }

    .sub-title {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 14px;
    }

    .sub-title {
        font-size: 12px;
    }

    .menu a {
        font-size: 12px;
        padding: 6px;
    }

    .info-section {
        padding: 20px;
    }

    .class-details p {
        font-size: 13px;
    }
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #c0392b;
    padding: 10px 20px;
}

.left {
    display: flex;
    align-items: center;
}

.logo {
    width: 90px;
    height: 90px;
    margin-right: 15px;
}

.text-area {
    display: flex;
    flex-direction: column;
}

.main-title {
    color: white;
    font-size: 18px;
    margin: 0;
}

.sub-title {
    color: #f1f1f1;
    font-size: 14px;
    margin: 0;
}

.menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
}

.menu li {
    margin-left: 10px;
}

.menu a {
    text-decoration: none;
    color: white;
    font-weight: bold;
    padding: 8px 10px;
    border-radius: 5px;
    transition: 0.3s;
    font-size: 13px;
}

.menu a:hover {
    background-color: #922b21;
}

.admin-link a {
    background-color: #2c3e50;
}

.admin-link a:hover {
    background-color: #1a252f;
}

.content {
    padding: 20px;
    display: flex;
    justify-content: center;
}

.haber-alani {
    display: flex;
    gap: 20px;
    width: 100%;
    max-width: 1200px;
    align-items: flex-start;
}

.duyurular {
    flex: 1;
    max-width: 200px;
    background-color: white;
    padding: 15px;
    border-radius: 5px;
    box-sizing: border-box;
    position: sticky;
    top: 20px;
}

.duyurular h3 {
    margin-top: 0;
    font-size: 18px;
    border-bottom: 2px solid #c0392b;
    padding-bottom: 5px;
}

.duyurular ul {
    padding-left: 20px;
    margin-top: 10px;
}

.duyurular li {
    margin-bottom: 8px;
    font-size: 14px;
}

.orta-sutun {
    flex: 2;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.buyuk-haber {
    background-color: white;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    box-sizing: border-box;
}

.haber-img {
    width: 100%;
    height: auto;
    border-radius: 5px;
}

.haber-baslik {
    margin: 15px 0 10px 0;
}

.yan-haberler {
    flex: 1;
    max-width: 250px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 20px;
}

.kucuk-haber {
    background-color: white;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    box-sizing: border-box;
}

.kucuk-haber h4 {
    margin: 10px 0 5px 0;
    font-size: 15px;
}

.kucuk-haber p {
    font-size: 13px;
    margin: 0;
}

.classes-container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
    text-align: center;
}

.classes-title {
    color: #c0392b;
    border-bottom: 3px solid #c0392b;
    display: inline-block;
    padding-bottom: 5px;
    margin-bottom: 25px;
    font-size: 24px;
}

.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    text-align: left;
}

.class-item {
    background-color: white;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border-top: 5px solid #c0392b;
    transition: 0.3s;
}

.class-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.class-header {
    background-color: #f9f9f9;
    padding: 15px;
    font-weight: bold;
    font-size: 18px;
    color: #2c3e50;
    border-bottom: 1px solid #eee;
    text-align: center;
}

.class-details {
    padding: 20px;
}

.class-details p {
    margin: 10px 0;
    font-size: 14px;
    color: #555;
    line-height: 1.5;
}

.class-details strong {
    color: #c0392b;
    font-weight: 600;
}

@media (max-width: 600px) {
    .classes-grid {
        grid-template-columns: 1fr;
    }
}

.info-container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
}

.info-section {
    background-color: white;
    padding: 30px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    line-height: 1.8;
    color: #333;
}

.info-title {
    color: #c0392b;
    border-left: 5px solid #c0392b;
    padding-left: 15px;
    margin-bottom: 20px;
    font-size: 22px;
}

.info-features {
    display: flex;
    gap: 20px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.feature-box {
    flex: 1;
    min-width: 250px;
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #eee;
}

.feature-box h4 {
    color: #c0392b;
    margin-top: 0;
    margin-bottom: 10px;
}

.feature-box p {
    font-size: 14px;
    margin: 0;
}

@media (max-width: 768px) {
    .info-features {
        flex-direction: column;
    }
}