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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f0f2f5;
    line-height: 1.6;
}

/* Topbar stilleri */
.topbar {
    background-color: #2196F3;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.logo-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
}

.logo-title-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.logo {
    width: 96px;
    height: 96px;
}

.app-name {
    color: white;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    text-align: center;
}

/* Ana container */
.container {
    max-width: 1200px;
    margin: 160px auto 20px;
    padding: 20px;
}

h1 {
    display: none; /* Başlığı gizle çünkü topbar'da gösteriyoruz */
}

.app-icon {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 10px;
}

.app-info h3 {
    color: #1a237e;
    margin-bottom: 5px;
    font-size: 1.2em;
}

.app-info p {
    color: #666;
    font-size: 0.9em;
    line-height: 1.4;
}

.app-section {
    margin-bottom: 30px;
}

.section-header {
    background-color: #1a237e;
    color: white;
    padding: 15px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    margin: 0;
    font-size: 1.5em;
}

.toggle-icon {
    font-size: 1.2em;
    transition: transform 0.3s ease;
}

.section-header.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

.section-content {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 0 10px;
}

.section-content.hidden {
    display: none;
}

.app-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.app-list {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.app-button {
    text-decoration: none;
    color: #333;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.app-button:last-child {
    border-bottom: none;
}

.app-button:hover {
    background-color: #f5f5f5;
}

.app-info {
    flex: 1;
}

@media (max-width: 768px) {
    .section-content {
        grid-template-columns: 1fr;
    }
    
    .app-card {
        flex-direction: column;
        text-align: center;
    }
    
    .app-info {
        text-align: center;
    }
    
    .topbar-title {
        font-size: 1.2em;
    }
}