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

/* Header */
.header {
    background: #2c3e50;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

/* Top Menu */
.topmenu {
    background: #34495e;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.topmenu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

.topmenu ul li {
    position: relative;
}

.topmenu ul li a {
    display: block;
    color: #fff;
    padding: 14px 24px;
    text-decoration: none;
    transition: background 0.2s;
}

.topmenu ul li a:hover,
.topmenu ul li:hover > a {
    background: #1abc9c;
    color: #fff;
}

.topmenu ul li.dropdown:hover > .dropdown-content {
    display: block;
}

.topmenu ul .dropdown-content {
    display: none;
    position: absolute;
    background: #34495e;
    min-width: 180px;
    z-index: 1000;
    left: 0;
    top: 100%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.topmenu ul .dropdown-content li a {
    padding: 12px 20px;
    color: #fff;
    white-space: nowrap;
}

.topmenu ul .dropdown-content li a:hover {
    background: #1abc9c;
}

/* Şerit */
.serit {
    background: #e67e22;
    color: #fff;
    padding: 10px 20px;
    text-align: center;
    font-weight: bold;
}

/* İçerik */
.icerik {
    background: #fff;
    margin: 30px auto;
    padding: 30px;
    max-width: 1100px;
    min-height: 400px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    border-radius: 8px;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 16px 0;
    margin-top: 40px;
    font-size: 14px;
    border-top: 2px solid #1abc9c;
}

/* Eski stillerden örnekler (stiller.css, stiller2.css, ... gibi dosyalardan) */
input[type="text"], input[type="password"], select, textarea {
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 8px;
    font-size: 15px;
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 10px;
}

input[type="submit"], button, .button {
    background: #1abc9c;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 10px 24px;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.2s;
}

input[type="submit"]:hover, button:hover, .button:hover {
    background: #16a085;
}

label {
    font-weight: bold;
    margin-bottom: 4px;
    display: block;
}

table {
    border-collapse: collapse;
    width: 100%;
    background: #fff;
    margin-bottom: 20px;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px 12px;
    text-align: left;
}

th {
    background: #f4f4f4;
    color: #333;
}

tr:nth-child(even) {
    background: #fafafa;
}

/* Bildirimler için örnek */
.notifit_confirm, .notifit_error, .notifit_success {
    font-size: 15px;
    padding: 12px 20px;
    border-radius: 4px;
    margin: 10px 0;
}

.notifit_confirm { background: #f1c40f; color: #fff; }
.notifit_error { background: #e74c3c; color: #fff; }
.notifit_success { background: #27ae60; color: #fff; }

/* Diğer eski stillerden eklemeler buraya eklenebilir */
/* ... */