/* Değişkenler */
:root {
    --primary: #1b4d3e;
    --secondary: #2d6a4f;
    --bg-light: #f8f9fa;
    --text-dark: #212529;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
    --nav-border: rgba(0,0,0,0.05);
}

/* Karanlık Mod Değişkenleri */
[data-theme="dark"] {
    --bg-light: #0d1117;
    --text-dark: #c9d1d9;
    --white: #161b22;
    --shadow: 0 10px 30px rgba(0,0,0,0.3);
    --nav-border: #30363d;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

/* Navbar */
.navbar {
    background: var(--white);
    padding: 15px 5%;
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--nav-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: 0.3s;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

    .logo span {
        color: var(--secondary);
    }

.nav-links-center {
    display: flex;
    gap: 30px;
}

    .nav-links-center a {
        text-decoration: none;
        color: var(--text-dark);
        font-weight: 600;
        font-size: 15px;
        transition: 0.3s;
    }

        .nav-links-center a:hover {
            color: var(--primary);
        }

/* Hero Bölümü (Sabit Renk Kalmalı) */
.hero-section {
    height: 75vh;
    background: linear-gradient(135deg, #1b4d3e 0%, #40916c 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin: 15px 0;
    font-family: 'Montserrat', sans-serif;
    color: white !important;
}

.hero-content p {
    color: rgba(255,255,255,0.9) !important;
}

/* İstatistik Çubuğu */
.stats-bar {
    display: flex;
    justify-content: space-around;
    background: var(--white);
    padding: 35px;
    margin: -50px 10% 0;
    border-radius: 15px;
    position: relative;
    z-index: 5;
    box-shadow: var(--shadow);
    transition: 0.3s;
}

.stat-item strong {
    display: block;
    font-size: 28px;
    color: var(--primary);
}

.stat-item span {
    color: var(--text-dark);
}

/* Kartlar */
.info-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: 0.3s;
    color: var(--text-dark);
}

    .info-card h3 {
        color: var(--primary);
    }

/* Giriş/Kayıt Butonları */
.btn-login {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.btn-filled {
    background: var(--primary);
    color: white !important;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    transition: 0.3s;
}

    .btn-filled:hover {
        background: var(--secondary);
    }