/* ------------------- */
/* --- GENEL CSS --- */
/* ------------------- */

/* Renk Paleti ve Değişkenler - Buradan renkleri kolayca değiştirebilirsiniz */
:root {
    --dark-navy: #0a192f;      /* Ana Arka Plan Rengi */
    --navy: #112240;          /* Kart ve İkincil Arka Plan Rengi */
    --light-navy: #233554;    /* Vurgulu Arka Plan Rengi */
    --slate: #a8b2d1;         /* Normal Yazı Rengi */
    --light-slate: #ccd6f6;   /* Başlık ve Vurgulu Yazı Rengi */
    --green: #64ffda;         /* Ana Vurgu Rengi (Butonlar, Linkler) */
    --green-tint: rgba(100, 255, 218, 0.1); /* Buton hover efekti için */
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-navy);
    color: var(--slate);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 0;
    opacity: 0; /* Animasyon için başlangıç durumu */
    transform: translateY(30px); /* Animasyon için başlangıç durumu */
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

h1, h2, h3 {
    color: var(--light-slate);
    font-weight: 600;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--green);
    margin: 10px auto 0;
    border-radius: 2px;
}

.cta-button {
    display: inline-block;
    background-color: transparent;
    color: var(--green);
    border: 1px solid var(--green);
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: var(--green-tint);
}

/* ------------------- */
/* --- HEADER / NAV --- */
/* ------------------- */
header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: top 0.3s;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--green);
    text-decoration: none;
}

.nav-menu {
    list-style: none;
    display: flex;
}

.nav-item {
    margin-left: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--light-slate);
    font-size: 1rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--green);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--green);
    transition: all 0.3s ease-in-out;
}


/* ------------------- */
/* --- HERO BÖLÜMÜ --- */
/* ------------------- */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    text-align: left;
    padding-top: 80px; /* Header yüksekliği kadar boşluk */
}

.hero-content h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem); /* Dinamik font boyutu */
    line-height: 1.1;
}
.hero-content h3 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--slate);
    margin-top: 10px;
}
.hero-content p {
    max-width: 600px;
    margin: 1.5rem 0;
    font-size: 1.1rem;
}
.hero-content .cta-button {
    margin-top: 1.5rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
}


/* ------------------- */
/* --- HAKKIMIZDA --- */
/* ------------------- */
#hakkimizda .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

#hakkimizda h3 {
    color: var(--green);
    font-size: 1.5rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.team-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.team-member {
    background: var(--navy);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.team-member img {
    width: 100%;
    height: auto;
    border-radius: 50%;
    margin-bottom: 1rem;
}

/* ------------------- */
/* --- FAALİYETLER --- */
/* ------------------- */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--navy);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--light-navy);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.card .icon {
    font-size: 2.5rem;
    color: var(--green);
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.25rem;
    color: var(--light-slate);
    margin-bottom: 0.5rem;
}

/* ------------------- */
/* --- NEDEN KATILMALISIN --- */
/* ------------------- */
#neden-katilmalisin ul {
    list-style: none;
    max-width: 800px;
    margin: 0 auto;
}

#neden-katilmalisin li {
    background: var(--navy);
    margin-bottom: 1rem;
    padding: 1.5rem;
    border-left: 4px solid var(--green);
    border-radius: 4px;
    transition: background-color 0.3s;
}

#neden-katilmalisin li:hover {
    background-color: var(--light-navy);
}

#neden-katilmalisin li strong {
    display: block;
    color: var(--light-slate);
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
}


/* ------------------- */
/* --- BİZE KATIL --- */
/* ------------------- */
#katil {
    text-align: center;
}

#katil p {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.social-links {
    margin-top: 2rem;
}

.social-links a {
    color: var(--slate);
    font-size: 2rem;
    margin: 0 1rem;
    transition: color 0.3s, transform 0.3s;
}

.social-links a:hover {
    color: var(--green);
    transform: translateY(-5px);
}

/* ------------------- */
/* --- FOOTER --- */
/* ------------------- */
footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--light-navy);
    font-size: 0.9rem;
}

footer a {
    color: var(--green);
    text-decoration: none;
}


/* ------------------- */
/* --- MOBİL UYUMLULUK --- */
/* ------------------- */
@media(max-width: 768px) {
    .hamburger {
        display: block;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: var(--dark-navy);
        width: 100%;
        height: calc(100vh - 80px);
        text-align: center;
        transition: 0.3s;
    }
    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 2rem 0;
    }
    
    .nav-link {
        font-size: 1.5rem;
    }

    #hakkimizda .container {
        grid-template-columns: 1fr;
    }
}