/* Genel Sayfa Stilleri */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Stilleri */
header .ust-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 5%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header .logo a {
    font-size: 1.8em;
    font-weight: bold;
    text-decoration: none;
}

header .ana-menu ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

header .ana-menu ul li {
    display: inline-block;
    margin-left: 20px;
}

header .ana-menu a {
    text-decoration: none;
    font-size: 1.1em;
}

/* Footer Stilleri */
footer .alt-bar {
    text-align: center;
    padding: 20px;
    margin-top: 30px;
    border-top: 1px solid #ccc;
}

/* Ürün Listesi */
.urun-listesi {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 30px;
}

.urun-karti {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    text-align: center;
    width: calc(25% - 20px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.urun-karti img {
    max-width: 100%;
    height: auto;
    margin-bottom: 10px;
}

.buton {
    display: inline-block;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 10px;
}

/* Form Stilleri */
.form-container {
    max-width: 500px;
    margin: 30px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.form-grup {
    margin-bottom: 15px;
}

.form-grup label {
    display: block;
    margin-bottom: 5px;
}

.form-kontrol {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.form-kontrol.is-invalid {
    border-color: #dc3545;
}

.invalid-feedback {
    color: #dc3545;
    font-size: 0.9em;
    display: block;
    margin-top: 5px;
}