:root {
    --primary-color: #2c3e50; /* Koyu antrasit */
    --secondary-color: #3498db; /* Canlı mavi */
    --accent-color: #e67e22; /* Turuncu */
    --text-color: #333;
    --light-bg: #f5f5f5;
    --dark-bg: #e0e0e0;
    --border-color: #ddd;
    --header-bg: #fff;
    --nav-bg: var(--secondary-color);
    --nav-text-color: #fff;
}

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.8;
    margin: 0;
    padding: 0;
    background-color: var(--light-bg);
    color: var(--text-color);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

header {
    background-color: var(--header-bg);
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-family: 'Montserrat', sans-serif;
    color: var(--primary-color);
    font-size: 2.5em;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

nav {
    background-color: var(--nav-bg);
    color: var(--nav-text-color);
    padding: 10px 0;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: center;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: var(--nav-text-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease, transform 0.2s ease;
    padding: 5px 10px;
    border-radius: 5px;
}

nav ul li a:hover {
    color: var(--accent-color);
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

main {
    padding: 20px;
    max-width: 960px;
    margin: 30px auto;
}

section {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

section:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

section h2 {
    font-family: 'Montserrat', sans-serif;
    color: var(--secondary-color);
    font-size: 2.2em;
    border-bottom: 3px solid var(--secondary-color);
    padding-bottom: 15px;
    margin-bottom: 25px;
}

section h3 {
    font-family: 'Montserrat', sans-serif;
    color: var(--accent-color);
    font-size: 1.8em;
    margin-top: 30px;
    margin-bottom: 15px;
}

section h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 1.4em;
}

section p {
    margin-bottom: 20px;
    text-align: justify;
}

section ul, section ol {
    margin-left: 25px;
    margin-bottom: 20px;
    list-style-position: outside;
}

section li {
    margin-bottom: 10px;
}

strong {
    color: var(--primary-color);
    font-weight: 600;
}

.example {
    background-color: var(--dark-bg);
    padding: 20px;
    border-left: 5px solid var(--accent-color);
    margin: 20px 0;
    font-family: 'Courier New', Courier, monospace;
    white-space: pre-wrap;
    border-radius: 8px;
    font-size: 0.95em;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 40px 0;
}

/* Hero Section Styling (Tanım bölümü) */
.hero-section {
    background: linear-gradient(rgba(44, 62, 80, 0.7), rgba(44, 62, 80, 0.7)), url('https://picsum.photos/seed/halkmuzik1/960/400') no-repeat center center;
    background-size: cover;
    color: #fff;
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.hero-section h2, .hero-section h3, .hero-section p, .hero-section ul, .hero-section li {
    color: #fff;
}
.hero-section .example {
    background-color: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-color: var(--accent-color);
}

/* Ses örneği kutusu */
.audio-example {
    background-color: var(--dark-bg);
    padding: 20px;
    border-left: 5px solid var(--accent-color);
    margin: 25px 0;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    align-items: flex-start; /* İçeriği sola hizalar */
}

.audio-example h4 {
    color: var(--secondary-color);
    margin-top: 0;
    margin-bottom: 10px;
}

.audio-example p {
    font-size: 0.95em;
    margin-bottom: 15px;
    color: var(--text-color);
    text-align: left; /* Açıklama sola yaslı kalsın */
}

.audio-example audio {
    width: 100%;
    margin-bottom: 10px;
    outline: none; /* Odaklandığında kenarlığı kaldırır */
}

.audio-example a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.audio-example a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}


footer {
    text-align: center;
    padding: 20px;
    background-color: var(--dark-bg);
    color: var(--primary-color);
    font-size: 0.9em;
    border-top: 1px solid var(--border-color);
}

/* Responsive Tasarım */
@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    nav ul li {
        display: block;
        margin: 10px 0;
    }
    main {
        padding: 15px;
        margin: 20px auto;
    }
    section {
        padding: 20px;
        margin-bottom: 20px;
    }
    section h2 {
        font-size: 1.8em;
    }
    section h3 {
        font-size: 1.5em;
    }
    .hero-section {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8em;
        margin-bottom: 15px;
    }
    nav ul {
        padding-top: 5px;
    }
    nav ul li {
        margin: 5px 0;
    }
    main {
        padding: 10px;
        margin: 15px auto;
    }
    section {
        padding: 15px;
        margin-bottom: 15px;
        border-radius: 8px;
    }
    section h2 {
        font-size: 1.6em;
        padding-bottom: 10px;
        margin-bottom: 15px;
    }
    section h3 {
        font-size: 1.3em;
        margin-top: 20px;
    }
    section h4 {
        font-size: 1.2em;
    }
    .hero-section {
        padding: 25px;
        border-radius: 10px;
    }
}