* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    color: #1c1e21;
}

/* Header Stili */
.header {
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo h1 {
    color: #1877f2;
    font-size: 24px;
}

.search-bar {
    position: relative;
    width: 300px;
}

.search-bar input {
    width: 100%;
    padding: 8px 35px 8px 15px;
    border: none;
    border-radius: 20px;
    background: #f0f2f5;
}

.search-bar i {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #65676b;
}

.header-icons {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-icons i {
    font-size: 20px;
    color: #65676b;
    cursor: pointer;
}

.profile-mini img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

/* Ana Container */
.container {
    max-width: 900px;
    margin: 80px auto 20px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 250px 1fr 250px;
    gap: 20px;
}

/* Sol Sütun */
.profile-card {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.profile-header {
    text-align: center;
    margin-bottom: 20px;
}

.profile-image {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin-bottom: 15px;
}

.profile-stats {
    display: flex;
    justify-content: space-around;
    text-align: center;
    border-top: 1px solid #e4e6eb;
    padding-top: 20px;
}

.stat-value {
    display: block;
    font-weight: bold;
    font-size: 18px;
}

.stat-label {
    color: #65676b;
    font-size: 14px;
}

.side-menu {
    background: #fff;
    border-radius: 8px;
    margin-top: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.side-menu ul {
    list-style: none;
}

.side-menu a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: #1c1e21;
    text-decoration: none;
    gap: 10px;
}

.side-menu a:hover {
    background: #f0f2f5;
}

/* Orta Sütun */
.post-form {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.post-form textarea {
    width: 100%;
    height: 100px;
    padding: 12px;
    border: none;
    resize: none;
    margin-bottom: 15px;
}

.post-form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.post-form-buttons button {
    background: none;
    border: none;
    padding: 8px;
    color: #65676b;
    cursor: pointer;
}

.share-btn {
    background: #1877f2;
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 6px;
    cursor: pointer;
}

.post {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.post-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.post-header img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
}

.post-time {
    color: #65676b;
    font-size: 14px;
}

.post-content img {
    width: 100%;
    border-radius: 8px;
    margin: 15px 0;
}

.post-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e4e6eb;
}

.post-actions button {
    background: none;
    border: none;
    color: #65676b;
    padding: 8px;
    flex: 1;
    cursor: pointer;
    border-radius: 6px;
}

.post-actions button:hover {
    background: #f0f2f5;
}

/* Sağ Sütun */
.notifications {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.notifications h3 {
    margin-bottom: 15px;
}

.notification {
    display: flex;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #e4e6eb;
}

.notification img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 10px;
}

.notification-time {
    color: #65676b;
    font-size: 12px;
}

/* Responsive Tasarım */
@media (max-width: 900px) {
    .container {
        grid-template-columns: 1fr;
    }

    .left-column, .right-column {
        display: none;
    }

    .header-container {
        padding: 10px;
    }

    .search-bar {
        width: 200px;
    }
}

@media (max-width: 600px) {
    .search-bar {
        display: none;
    }
    
    .post-actions {
        flex-wrap: wrap;
    }
}

/* ... önceki CSS kodları aynı ... */

/* Container grid yapısını güncelleme */
.container {
    max-width: 1200px; /* genişletildi */
    margin: 80px auto 20px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 220px 2fr 250px; /* orta sütun genişletildi */
    gap: 20px;
}

/* Footer Stili */
.footer {
    background: #ffffff;
    padding: 40px 0;
    margin-top: 40px;
    border-top: 1px solid #e4e6eb;
}

.footer-content {
    max-width: 1200px; /* container ile aynı genişlik */
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.footer-section h4 {
    color: #1c1e21;
    font-size: 18px;
    margin-bottom: 15px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #65676b;
    text-decoration: none;
    font-size: 14px;
}

.footer-section ul li a:hover {
    color: #1877f2;
}

.footer-bottom {
    max-width: 1200px;
    margin: 20px auto 0;
    padding: 20px 20px 0;
    border-top: 1px solid #e4e6eb;
    text-align: center;
    color: #65676b;
    font-size: 12px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-links a {
    color: #65676b;
    font-size: 20px;
}

.social-links a:hover {
    color: #1877f2;
}

/* Responsive güncellemesi */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
        grid-template-columns: 200px 1fr 220px;
    }
}

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

    .left-column, .right-column {
        display: none;
    }

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

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

.hidden-footer {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: #fff;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    transition: bottom 0.3s ease-in-out;
}

.hidden-footer:hover {
    bottom: 0;
}

/* Footer'ın görünür kısmı için küçük bir ipucu çubuğu */
.hidden-footer::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 0;
    width: 100%;
    height: 10px;
    background-color: rgba(0, 0, 0, 0.05);
    cursor: pointer;
}