body {
    background-color: #f7fafc;
}

header {

    color: white;
    display: flex;
}

a {
    text-decoration: none;
}

nav a {
    color: white;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #d1d5db;
}

section {
    padding: 4rem 0;
}

h1,
h2,
h3,
h4 {
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.875rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 3rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.bg-cover {
    background-size: cover;
    background-position: center;
}

button {
    background-color: #1d4ed8;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #2563eb;
}

footer {
    background-color: #1f2937;
    color: #d1d5db;
    text-align: center;
    padding: 1.5rem 0;
}

input,
textarea {
    color: black !important;
    background-color: white !important;
    padding: 0.75rem !important;
    border-radius: 8px !important;
    border: 1px solid #ccc !important;
}

input::placeholder,
textarea::placeholder {
    color: #888 !important;
}

/* Projeler Container: Responsive grid düzeni */
#projeler-container {
    display: grid;
    grid-template-columns: 1fr;
    /* Mobilde tek kolon */
    gap: 1rem;
    padding: 1rem;
}

@media (min-width: 640px) {
    #projeler-container {
        grid-template-columns: repeat(2, 1fr);
        /* 640px ve üzeri: 2 kolon */
    }
}

@media (min-width: 1024px) {
    #projeler-container {
        grid-template-columns: repeat(3, 1fr);
        /* 1024px ve üzeri: 3 kolon */
    }
}

@media (min-width: 1280px) {
    #projeler-container {
        grid-template-columns: repeat(4, 1fr);
        /* 1280px ve üzeri: 4 kolon */
    }
}