:root {
    --primary: #0284c7; 
    --primary-dark: #0369a1; 
    --accent: #f97316; 
    --accent-hover: #ea580c;
    --bg: #f8fafc; 
    --text: #334155; 
    --border: #e2e8f0;
}

/* Global Tipografi ve Sıfırlama (Bootstrap Standardı) */
* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

body { 
    background-color: var(--bg); 
    color: var(--text); 
    font-family: 'Inter', system-ui, -apple-system, sans-serif; /* Yeni Global Font */
    font-size: 14px;
    line-height: 1.5; 
    font-weight: 400;
    -webkit-font-smoothing: antialiased; /* Windows'ta pürüzsüz, cam gibi yazılar için */
    -moz-osx-font-smoothing: grayscale;
    display: flex; 
    flex-direction: column; 
    min-height: 100vh; 
}

main { flex: 1; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; color: #0f172a; line-height: 1.2; }
a { text-decoration: none; transition: all 0.2s ease-in-out; }

/* HEADER & TOP BAR */
.main-header { background: #ffffff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
.top-bar { background: #f1f5f9; border-bottom: 1px solid var(--border); color: #64748b; display: flex; justify-content: space-between; padding: 8px 5%; font-size: 12px; font-weight: 500; }
.top-bar a { color: #64748b; margin-left: 20px; }
.top-bar a:hover { color: var(--primary); }

.nav-bar { display: flex; justify-content: space-between; align-items: center; padding: 15px 5%; }
.nav-bar .logo a { font-size: 28px; font-weight: 900; color: var(--primary); letter-spacing: -0.5px; }
.main-menu { display: flex; align-items: center; }
.main-menu a { color: var(--text); margin-left: 25px; font-weight: 700; font-size: 14px; text-transform: uppercase; letter-spacing: 0.3px; }
.main-menu a:hover { color: var(--primary); }

/* ARAMA BARI */
.search-section { background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%); padding: 30px 5%; }
.search-box form { display: flex; gap: 10px; max-width: 1200px; margin: 0 auto; }
.search-box input { flex: 1; padding: 14px 20px; border: none; border-radius: 6px; font-size: 15px; outline: none; font-family: 'Inter', sans-serif; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.search-box button { background: var(--accent); color: #fff; border: none; padding: 0 35px; font-size: 15px; font-weight: 800; border-radius: 6px; cursor: pointer; letter-spacing: 0.5px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.search-box button:hover { background: var(--accent-hover); }

/* ÜYELİK SAYFALARI */
.auth-container { max-width: 450px; margin: 60px auto; padding: 0 20px; width: 100%; }
.auth-box { background: #ffffff; padding: 40px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); border: 1px solid var(--border); }
.auth-box h1 { font-size: 24px; color: var(--primary); text-align: center; margin-bottom: 8px; font-weight: 800; letter-spacing: -0.5px; }
.auth-box p.subtitle { text-align: center; color: #64748b; font-size: 14px; margin-bottom: 25px; }
.auth-form input { width: 100%; padding: 14px; margin-bottom: 15px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; outline: none; font-family: 'Inter', sans-serif; background: #f8fafc; }
.auth-form input:focus { border-color: var(--primary); background: #ffffff; }
.btn-auth { background: var(--accent); color: #fff; border: none; width: 100%; padding: 14px; font-size: 15px; font-weight: 700; border-radius: 6px; cursor: pointer; margin-top: 10px; }
.btn-auth:hover { background: var(--accent-hover); }
.auth-footer { text-align: center; margin-top: 25px; font-size: 14px; color: #64748b; }
.auth-footer a { color: var(--primary); font-weight: 700; }
.alert { padding: 12px; border-radius: 6px; margin-bottom: 20px; font-size: 14px; text-align: center; font-weight: 600; }
.alert.error { background: #fee2e2; color: #b91c1c; border: 1px solid #fca5a5; }
.alert.success { background: #dcfce7; color: #15803d; border: 1px solid #86efac; }

/* İÇERİK YERLEŞİMİ (Grid Yapısı) */
.tours-container { max-width: 1300px; margin: 30px auto; padding: 0 20px; display: grid; grid-template-columns: 260px 1fr; gap: 30px; width: 100%; }

/* SOL FİLTRE PANELİ */
.filters-sidebar { background: #ffffff; padding: 25px 20px; border-radius: 8px; border: 1px solid var(--border); height: fit-content; position: sticky; top: 100px; box-shadow: 0 4px 6px rgba(0,0,0,0.02); }
.filter-title { font-size: 18px; color: var(--primary); margin-bottom: 20px; font-weight: 800; letter-spacing: -0.3px; }
.filter-group { margin-bottom: 25px; border-top: 1px solid var(--border); padding-top: 15px; }
.filter-group h4 { font-size: 14px; margin-bottom: 12px; color: var(--text); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.filter-group input[type="text"] { width: 100%; padding: 10px 12px; margin-bottom: 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-family: 'Inter', sans-serif; outline: none; background: #f8fafc; }
.filter-scroll { max-height: 200px; overflow-y: auto; padding-right: 5px; }
.filter-scroll::-webkit-scrollbar { width: 4px; }
.filter-scroll::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
.filter-group label { display: flex; align-items: center; margin-bottom: 10px; font-size: 14px; color: #475569; cursor: pointer; font-weight: 500; }
.filter-group label:hover { color: var(--primary); }
.filter-group label input { margin-right: 10px; cursor: pointer; width: 16px; height: 16px; }

/* SAĞ İÇERİK & SIRALAMA BARI */
.main-content { display: flex; flex-direction: column; gap: 20px; }
.top-sorting { background: #ffffff; border: 1px solid var(--border); border-radius: 8px; padding: 15px 25px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 4px 6px rgba(0,0,0,0.02); }
.top-sorting h1 { font-size: 20px; color: var(--primary-dark); font-weight: 800; letter-spacing: -0.5px; }
.top-sorting span { font-size: 14px; color: #64748b; font-weight: 500; }
.sort-options a { color: #64748b; font-size: 13px; margin-left: 20px; font-weight: 600; }
.sort-options a:hover, .sort-options a.active { color: var(--primary); }

/* YATAY ÜRÜN KARTI */
.tour-card-h { background: #ffffff; border: 1px solid var(--border); border-radius: 12px; display: flex; overflow: hidden; transition: 0.3s; height: 220px; box-shadow: 0 4px 6px rgba(0,0,0,0.02); }
.tour-card-h:hover { box-shadow: 0 15px 30px rgba(0,0,0,0.08); border-color: #bae6fd; transform: translateY(-2px); }
.tour-img-box { width: 300px; background: #e0f2fe; position: relative; }
.tour-img-box img { width: 100%; height: 100%; object-fit: cover; }
.tour-badge { position: absolute; top: 15px; left: 15px; background: var(--accent); color: #fff; padding: 5px 10px; font-size: 11px; font-weight: 800; border-radius: 6px; z-index: 2; text-transform: uppercase; letter-spacing: 0.5px; }

.tour-details { flex: 1; padding: 25px; display: flex; flex-direction: column; }
.tour-route { font-size: 11px; color: #0284c7; margin-bottom: 8px; font-weight: 700; background: #e0f2fe; width: fit-content; padding: 4px 8px; border-radius: 4px; text-transform: uppercase; letter-spacing: 0.5px; }
.tour-details h3 { font-size: 18px; color: var(--text); margin-bottom: 10px; font-weight: 800; letter-spacing: -0.3px; }
.tour-details h3 a { color: inherit; }
.tour-details h3 a:hover { color: var(--primary); }
.tour-features { display: flex; gap: 15px; font-size: 13px; color: #475569; margin-bottom: 15px; font-weight: 500; }
.tour-tags { margin-top: auto; display: flex; gap: 10px; }
.tag { border: 1px solid #bae6fd; background: #f0f9ff; padding: 5px 10px; font-size: 12px; border-radius: 6px; color: #0369a1; font-weight: 600; }

.tour-price-box { width: 230px; border-left: 1px solid var(--border); padding: 25px; display: flex; flex-direction: column; justify-content: center; align-items: center; background: #f8fafc; text-align: center; }
.price-note { font-size: 11px; color: #64748b; margin-bottom: 5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.old-price { font-size: 14px; color: #94a3b8; text-decoration: line-through; margin-bottom: 2px; font-weight: 600; }
.current-price { font-size: 26px; font-weight: 900; color: var(--primary-dark); margin-bottom: 15px; letter-spacing: -1px; }
.btn-examine { background: #ffffff; color: var(--primary); border: 2px solid var(--primary); padding: 12px 20px; font-size: 14px; font-weight: 800; border-radius: 6px; width: 100%; transition: 0.2s; }
.btn-examine:hover { background: var(--primary); color: #fff; }

/* FOOTER */
.footer { background-color: #ffffff; color: #334155; padding: 60px 20px 30px; width: 100%; border-top: 1px solid var(--border); }
.footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; border-bottom: 1px solid var(--border); padding-bottom: 40px; }
.footer-col h3 { font-size: 15px; margin-bottom: 20px; color: var(--primary-dark); font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px; }
.footer-col a, .footer-col p { font-size: 14px; color: #64748b; margin-bottom: 12px; font-weight: 500; display: block; }
.footer-col a:hover { color: var(--primary); padding-left: 5px; }
.footer-bottom { text-align: center; padding-top: 25px; font-size: 13px; color: #94a3b8; font-weight: 500; }