/* --- 1. BASE.CSS (CORE & THEME) --- */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Premium Renk Paleti */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    
    /* Canlı Gradyanlar */
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
    
    /* Altın (Premium) Renkler */
    --gold: #f59e0b;
    --gold-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

    --secondary: #0f172a; 
    --bg-body: #f8fafc;
    --surface: #ffffff;
    
    --text-main: #1e293b;
    --text-light: #64748b;
    
    --shadow-soft: 0 10px 40px -10px rgba(0,0,0,0.05);
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-body);
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(14, 165, 233, 0.05) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden; /* Yatay taşmayı engelle */
}

/* NAVBAR - MASAÜSTÜ */
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 5%;
    background: rgba(255, 255, 255, 0.9); /* Biraz daha opak */
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    position: sticky; top: 0; z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.5);
    transition: var(--transition);
}

.logo {
    font-size: 1.5rem; font-weight: 800; color: var(--secondary);
    text-decoration: none; display: flex; align-items: center;
    transition: var(--transition);
    white-space: nowrap; /* Logo kırılmasın */
}
.logo:hover { transform: scale(1.05); color: var(--primary); }

.med-badge {
    background: var(--accent-gradient); color: white;
    font-size: 0.7rem; padding: 4px 8px; border-radius: 6px; margin-left: 6px;
}

.nav-links {
    list-style: none; display: flex; align-items: center;
    gap: 30px; margin: 0; padding: 0;
}

.nav-links a:not(.btn-login) {
    text-decoration: none; color: var(--text-main);
    font-weight: 600; font-size: 0.95rem;
    position: relative; padding: 5px 0;
}

.nav-links a:not(.btn-login)::after {
    content: ''; position: absolute; width: 0; height: 2px;
    bottom: 0; left: 0; background: var(--primary);
    transition: width 0.3s ease;
}

.nav-links a:not(.btn-login):hover { color: var(--primary); }
.nav-links a:not(.btn-login):hover::after { width: 100%; }

/* Buton Stili */
.btn-login {
    text-decoration: none !important;
    background: var(--secondary); color: white !important;
    padding: 12px 24px; border-radius: 50px;
    box-shadow: 0 4px 15px rgba(15, 23, 42, 0.2);
    transition: var(--transition);
    border-bottom: none !important;
    font-size: 0.9rem; font-weight: 600;
    white-space: nowrap;
}
.btn-login:hover {
    transform: translateY(-2px);
    background: var(--primary-gradient);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.4);
}

.lang-switcher {
    border: 1px solid #e2e8f0; padding: 8px 16px;
    border-radius: 20px; background: white;
    font-size: 0.85rem; font-weight: 700; color: var(--text-light);
    cursor: pointer;
    white-space: nowrap;
}

footer {
    text-align: center; padding: 60px 20px;
    color: var(--text-light); font-size: 0.9rem;
    background: white; border-top: 1px solid #e2e8f0;
    margin-top: 60px;
}

/* --- MOBILE OPTIMIZATIONS (NAVBAR) --- */
@media (max-width: 900px) {
    .navbar {
        flex-direction: column; /* Alt alta diz */
        padding: 15px;
        gap: 15px;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap; /* Sığmazsa alt satıra geçsin */
        gap: 15px 20px; /* Dikey 15, Yatay 20 */
    }

    /* Mobilde linkler daha kolay tıklanmalı */
    .nav-links a:not(.btn-login) {
        font-size: 1rem;
        padding: 5px;
    }

    /* Mobilde Buton Tam Genişlik veya Daha Belirgin */
    .btn-login {
        width: 100%;
        text-align: center;
        display: block;
        padding: 14px;
    }
    
    /* Logo Ortalanır */
    .logo { font-size: 1.4rem; }
}