:root {
    --orange: #f57c00;
    --orange-dark: #ef6c00;
    --black: #121212;
    --gray: #1f1f1f;
    --white: #ffffff;
    --text-muted: #bbbbbb;
}

body.light-mode {
    --black: #ffffff;
    --gray: #f5f5f5;
    --white: #000000;
    --text-muted: #444444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

a {
    color: var(--orange);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--orange-dark);
}

.container {
    max-width: 960px;
    margin: auto;
    padding: 40px 20px;
}

.site-header {
    background: var(--gray);
    padding: 40px 20px;
    text-align: center;
    position: relative;
    border-bottom: 3px solid var(--orange);
    transition: background 0.3s;
}

.site-header h1 {
    font-size: 2.5rem;
    color: var(--orange);
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: 10px;
}

nav {
    margin-top: 20px;
}

nav a {
    margin: 0 15px;
    font-weight: 500;
    color: var(--white);
}

nav a:hover {
    color: var(--orange);
}

.section {
    background: var(--gray);
    border-radius: 12px;
    margin: 20px;
    padding: 30px;
    transition: background 0.3s;
}

.section.dark {
    background: var(--gray);
}

h2 {
    font-size: 1.8rem;
    color: var(--orange);
    margin-bottom: 20px;
}

.project h3 {
    color: var(--orange);
    margin-top: 20px;
}

ul {
    padding-left: 20px;
}

li {
    margin-bottom: 10px;
}

footer.site-footer {
    background-color: #0d0d0d;
    color: var(--text-muted);
    text-align: center;
    padding: 20px;
    margin-top: 60px;
    font-size: 0.9rem;
    transition: background 0.3s, color 0.3s;
}

.language-switch {
    position: absolute;
    top: 20px;
    right: 20px;
}

.language-switch button {
    background-color: var(--gray);
    border: 1px solid var(--orange);
    color: var(--orange);
    padding: 5px 10px;
    margin-left: 5px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.2s, color 0.2s;
}

.language-switch button:hover {
    background-color: var(--orange);
    color: var(--white);
}

/* Responsive tasarım */
@media (max-width: 600px) {
    .site-header h1 {
        font-size: 2rem;
    }

    .language-switch {
        position: static;
        margin-top: 20px;
    }

    nav a {
        display: block;
        margin: 10px 0;
    }

    .container {
        padding: 20px 10px;
    }
}