/* Genel Ayarlar */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    background-color: #f4f7f6;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 2rem;
    text-align: center;
}

/* Yerleşim */
.main-container {
    display: flex;
    max-width: 1200px;
    margin: 20px auto;
    gap: 20px;
    padding: 0 20px;
}

/* Navigasyon Menüsü */
nav {
  flex: 1 1 200px;
  max-width: 200px;
  border-right: 1px solid #ddd;
  padding: 20px 0;
  box-shadow: 2px 0 5px rgba(0,0,0,0.05);
}

.vertical-menu a {
    background-color: #eee;
    color: black;
    display: block;
    padding: 12px;
    text-decoration: none;
    margin-bottom: 5px;
    border-radius: 4px;
    transition: 0.3s;
}

.vertical-menu a:hover {
    background-color: #ccc;
}

.vertical-menu a.active {
    background-color: #3498db;
    color: white;
}

/* İçerik Alanı */
article {
    flex: 3;
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.contact-card {
    border-bottom: 1px solid #eee;
    margin-bottom: 20px;
    padding-bottom: 15px;
}

.contact-card:last-child {
    border-bottom: none;
}

.contact-card h3 {
    color: #2c3e50;
    border-left: 4px solid #3498db;
    padding-left: 10px;
    margin-top: 0;
}

/* Mobil Uyumluluk */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
    }
}

.info-row {
    display: flex;
    margin-bottom: 8px;
    align-items: flex-start; /* Yazıların üstten hizalanmasını sağlar */
}

.label {
    font-weight: bold;
    width: 70px; /* "Email:" yazısının kaplayacağı alan - hizayı bu sağlar */
    color: #555;
    flex-shrink: 0; /* Etiketin daralmasını engeller */
}

.email-list {
    display: flex;
    flex-direction: column; /* E-postaları alt alta dizer */
    gap: 4px; /* Aralarındaki boşluk */
}

.email-list a {
    text-decoration: none;
    color: #3498db;
}

.email-list a:hover {
    text-decoration: underline;
}

/* Syllabus Özel Stilleri */
.syllabus-section {
    margin-bottom: 30px;
}

.outline-list {
    columns: 2; /* Konu listesini iki sütun yapar */
    -webkit-columns: 2;
    -moz-columns: 2;
    list-style-type: square;
}

.highlight-box {
    background-color: #e7f3fe;
    border-left: 5px solid #2196F3;
    padding: 15px;
    font-weight: bold;
}

.grading-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.grading-table th, .grading-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

.grading-table th {
    background-color: #f8f9fa;
}

.disclaimer {
    font-size: 0.85rem;
    font-style: italic;
    color: #666;
}

.warning {
    background-color: #fff3f3;
    border: 1px solid #ffcccc;
    padding: 15px;
    color: #d9534f;
    margin-top: 15px;
}

/* Mobil için liste sütununu teke düşür */
@media (max-width: 600px) {
    .outline-list { columns: 1; }
}

/* Lecture Notes Tablo Stilleri */
#notes-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background-color: #fff;
}

#notes-table th {
    background-color: #34495e;
    color: white;
    padding: 15px;
    text-align: left;
}

#notes-table td {
    padding: 12px 15px;
    border-bottom: 1px solid #eee;
}

/* Satırların üzerine gelince renk değişimi (Zebra çizgileri) */
#notes-table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

#notes-table tbody tr:hover {
    background-color: #f1f7ff;
    transition: 0.2s;
}

/* PDF Linklerini Buton Yapma */
.pdf-link {
    display: inline-block;
    padding: 6px 12px;
    background-color: #e74c3c; /* PDF kırmızısı */
    color: white !important;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: bold;
    transition: 0.3s;
}

.pdf-link:hover {
    background-color: #c0392b;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.text-center {
    text-align: center;
}