/* --- Değişkenler ve Reset --- */
:root {
    --sidebar-width: 280px;
    --color-navy: #003366;    /* Ana Renk */
    --color-blue-light: #f0f4f8;
    --color-white: #ffffff;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-accent: #0056b3;
    --color-border: #e0e0e0;
    
    --font-heading: 'Merriweather', serif;
    --font-body: 'Open Sans', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-body);
    background-color: var(--color-blue-light);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* --- Layout --- */
.layout-wrapper { display: flex; min-height: 100vh; position: relative; }

/* --- Sidebar (Desktop) --- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-white);
    height: 100vh;
    position: fixed;
    top: 0; left: 0;
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-navy);
    letter-spacing: -1px;
}
.highlight { color: var(--color-accent); }

.nav-menu { flex-grow: 1; padding: 20px 0; }
.nav-menu li a {
    display: block;
    padding: 15px 30px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    border-left: 4px solid transparent;
}
.nav-menu li a:hover, .nav-menu li a.active {
    background-color: #f8f9fa;
    color: var(--color-navy);
    border-left-color: var(--color-navy);
}

.sidebar-footer { padding: 30px; border-top: 1px solid var(--color-border); font-size: 0.9rem; color: var(--color-text-light); }
.email-link { color: var(--color-navy); font-weight: bold; display: block; margin-top: 5px; }
.date-badge { margin-top: 10px; font-size: 0.8rem; color: #888; }
.close-menu { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; }

/* --- Mobile Header --- */
.mobile-header {
    display: none; /* Desktopta gizli */
    position: fixed; top: 0; left: 0; width: 100%;
    height: 60px;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    z-index: 900;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}
.mobile-brand { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; color: var(--color-navy); }
.hamburger { display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.hamburger span { display: block; width: 25px; height: 3px; background: var(--color-navy); border-radius: 3px; }

/* --- Main Content --- */
.main-content {
    flex-grow: 1;
    margin-left: var(--sidebar-width); /* Sidebar genişliği kadar it */
    transition: margin-left 0.3s ease;
    display: flex;
    flex-direction: column;
}

/* --- Hero Section --- */
.hero-news {
    position: relative;
    height: 60vh;
    min-height: 400px;
    display: flex;
    align-items: flex-end;
}
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
}
.hero-news .overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    width: 100%;
    height: 100%;
    position: absolute;
    display: flex;
    align-items: flex-end;
}
.hero-content {
    position: relative;
    z-index: 1;
    color: #fff;
    padding-bottom: 60px;
    max-width: 800px;
}
.category-tag { background: var(--color-accent); color: #fff; padding: 5px 10px; font-size: 0.8rem; font-weight: bold; border-radius: 4px; display: inline-block; margin-bottom: 15px; }
.hero-content h1 { font-family: var(--font-heading); font-size: 3rem; line-height: 1.2; margin-bottom: 20px; }
.hero-content p { font-size: 1.2rem; margin-bottom: 30px; opacity: 0.9; }

/* --- Container & Padding --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.content-padding { padding-top: 60px; padding-bottom: 60px; }

/* --- Buttons --- */
.btn { display: inline-block; padding: 12px 30px; font-weight: 600; border-radius: 4px; text-align: center; }
.btn-primary { background: var(--color-navy); color: #fff; }
.btn-primary:hover { background: var(--color-accent); }
.btn-dark { background: #333; color: #fff; border: none; cursor: pointer; }
.full-width { width: 100%; }

/* --- Grid & Cards --- */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.section-header { margin-bottom: 40px; }
.section-header h2 { font-family: var(--font-heading); font-size: 2rem; color: var(--color-navy); }
.line { width: 60px; height: 4px; background: var(--color-accent); margin-top: 10px; }

.news-card {
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}
.news-card:hover { transform: translateY(-5px); }
.img-container { height: 200px; overflow: hidden; }
.img-container img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.news-card:hover img { transform: scale(1.05); }

.card-body { padding: 25px; }
.tag { font-size: 0.75rem; font-weight: bold; color: #999; text-transform: uppercase; margin-bottom: 10px; display: block; }
.tag.economy { color: #27ae60; }
.tag.culture { color: #e67e22; }
.tag.travel { color: #2980b9; }

.news-card h3 { font-family: var(--font-heading); font-size: 1.4rem; margin-bottom: 10px; color: var(--color-text); line-height: 1.3; }
.news-card p { font-size: 0.95rem; color: var(--color-text-light); }

/* --- Newsletter --- */
.newsletter-section { margin-top: 60px; background: #e3e8ee; padding: 50px; border-radius: 8px; text-align: center; }
.newsletter-box h2 { font-family: var(--font-heading); color: var(--color-navy); margin-bottom: 10px; }
.newsletter-form { max-width: 500px; margin: 20px auto 0; display: flex; gap: 10px; }
.newsletter-form input { flex: 1; padding: 12px; border: 1px solid #ccc; border-radius: 4px; }

/* --- About & Text Pages --- */
.text-block-header { text-align: center; margin-bottom: 60px; }
.text-block-header h1 { font-family: var(--font-heading); font-size: 2.5rem; color: var(--color-navy); }
.lead { font-size: 1.2rem; color: var(--color-text-light); }

.split-section { display: flex; align-items: center; gap: 50px; margin-bottom: 60px; }
.split-section img { border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
.text-content { flex: 1; }
.image-content { flex: 1; }

.value-card { background: #fff; padding: 30px; border-left: 4px solid var(--color-navy); box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.value-card h3 { color: var(--color-navy); margin-bottom: 10px; }

/* --- Testimonials --- */
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.review-card { background: #fff; padding: 30px; border-radius: 8px; border: 1px solid #eee; position: relative; }
.quote-icon { font-size: 3rem; color: #f0f0f0; position: absolute; top: 10px; left: 20px; font-family: serif; }
.review-card blockquote { position: relative; z-index: 1; font-style: italic; color: #555; margin-bottom: 15px; }
.review-card cite { font-weight: bold; color: var(--color-navy); font-size: 0.9rem; display: block; }

/* --- Forms --- */
.contact-wrapper { display: grid; grid-template-columns: 1fr 2fr; gap: 50px; }
.contact-info { background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); height: fit-content; }
.contact-form { background: #fff; padding: 40px; border-radius: 8px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 600; color: var(--color-text); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 4px; font-family: inherit; }

/* --- Privacy --- */
.policy-content { background: #fff; padding: 40px; border-radius: 8px; max-width: 800px; margin: 0 auto; }
.policy-content h1 { font-family: var(--font-heading); color: var(--color-navy); }
.policy-content h3 { color: var(--color-navy); margin-top: 30px; margin-bottom: 10px; }

/* --- Footer --- */
.main-footer { background: var(--color-navy); color: #fff; padding: 40px 0; margin-top: auto; }
.main-footer .footer-links a { color: #ccc; margin-left: 20px; font-size: 0.9rem; }
.main-footer .footer-links a:hover { color: #fff; text-decoration: underline; }
.main-footer .container { display: flex; justify-content: space-between; align-items: center; }

/* --- Overlay for Mobile Menu --- */
.overlay-bg {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 998;
    display: none; opacity: 0; transition: opacity 0.3s;
}
.overlay-bg.active { display: block; opacity: 1; }

/* --- Responsive Media Queries --- */
@media (max-width: 900px) {
    .main-content { margin-left: 0; }
    
    /* Sidebar Mobile Transformation */
    .sidebar { transform: translateX(-100%); width: 280px; box-shadow: 2px 0 10px rgba(0,0,0,0.2); }
    .sidebar.active { transform: translateX(0); }
    .close-menu { display: block; color: var(--color-navy); }
    
    /* Header Visible */
    .mobile-header { display: flex; }
    
    /* Content Adjustments */
    .hero-content h1 { font-size: 2rem; }
    .split-section, .contact-wrapper { grid-template-columns: 1fr; display: flex; flex-direction: column; }
    .newsletter-form { flex-direction: column; }
    .main-footer .container { flex-direction: column; gap: 20px; text-align: center; }
    .main-footer .footer-links a { margin: 0 10px; }
}