/* --- FRUTIGER AERO VARIABLES --- */
:root {
    --aero-sky-top: #87CEEB;    /* Gökyüzü Mavisi */
    --aero-sky-bot: #E0F7FA;    /* Açık Mavi */
    --aero-green: #7CFC00;      /* Canlı Çimen Yeşili */
    --aero-gloss: rgba(255, 255, 255, 0.6);
    --glass-border: 1px solid rgba(255, 255, 255, 0.8);
    --text-main: #333333;
    --text-blue: #005A9C;
    --radius-lg: 25px;
    --font-main: 'Trebuchet MS', 'Lucida Sans Unicode', sans-serif; /* Dönemin popüler fontu */
    --max-width: 1100px;
}

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

body {
    font-family: var(--font-main);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    /* Frutiger Aero Arka Planı: Gökyüzü ve Parlama */
    background: linear-gradient(180deg, var(--aero-sky-top) 0%, var(--aero-sky-bot) 50%, #ffffff 100%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* Arka Plan "Bokeh" Efektleri */
body::before {
    content: '';
    position: fixed;
    top: -100px; right: -100px;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.4) 0%, transparent 70%);
    z-index: -1;
}

a { text-decoration: none; color: inherit; transition: 0.2s; }
ul { list-style: none; }
img { width: 100%; height: auto; display: block; border-radius: var(--radius-lg); border: 4px solid white; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }

/* --- HEADER (Aero Glass) --- */
header {
    background: linear-gradient(to bottom, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.5) 50%, rgba(255,255,255,0.0) 100%);
    backdrop-filter: blur(5px);
    border-bottom: 1px solid rgba(255,255,255,0.5);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 10px 0;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--text-blue);
    text-shadow: 0 2px 4px rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Navigasyon Butonları (Glossy Pills) */
.nav-links { display: flex; gap: 15px; }

.nav-links a {
    padding: 8px 20px;
    border-radius: 20px;
    background: linear-gradient(to bottom, #ffffff 0%, #e0e0e0 100%);
    border: 1px solid #ccc;
    color: var(--text-main);
    font-weight: bold;
    font-size: 0.9rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

/* Parlama Efekti */
.nav-links a::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 50%;
    background: linear-gradient(to bottom, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0.1) 100%);
    border-radius: 20px 20px 0 0;
}

.nav-links a:hover, .nav-links a.active {
    background: linear-gradient(to bottom, #87CEEB 0%, #005A9C 100%);
    color: white;
    border-color: #004080;
}

.burger { display: none; cursor: pointer; color: var(--text-blue); font-size: 1.5rem; }

/* --- LAYOUTS --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 40px 20px;
    flex: 1;
}

.aero-box {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid white;
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 100, 200, 0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

/* Aero Box Parlaması */
.aero-box::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, transparent 60%);
    opacity: 0.3;
    pointer-events: none;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

/* --- COMPONENTS --- */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    background: linear-gradient(to bottom, #7CFC00 0%, #32CD32 100%); /* Frutiger Green */
    color: white;
    font-weight: bold;
    border: 1px solid #228B22;
    box-shadow: 0 4px 10px rgba(50, 205, 50, 0.4);
    position: relative;
    cursor: pointer;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.btn::after {
    content: '';
    position: absolute;
    top: 2px; left: 5%; width: 90%; height: 40%;
    background: linear-gradient(to bottom, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0.1) 100%);
    border-radius: 30px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(50, 205, 50, 0.6);
}

.icon-box svg { 
    width: 60px; height: 60px; 
    fill: url(#grad1); 
    filter: drop-shadow(0 2px 5px rgba(0,0,0,0.2));
    margin-bottom: 15px;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3 {
    margin-bottom: 20px;
    color: var(--text-blue);
    text-shadow: 1px 1px 0px white;
}

h1 { font-size: 3rem; letter-spacing: -1px; }
h2 { font-size: 2.2rem; border-bottom: 2px solid rgba(0, 90, 156, 0.2); padding-bottom: 10px; display: inline-block; }
p { margin-bottom: 20px; font-size: 1.1rem; }

/* --- FORMS --- */
.form-group { margin-bottom: 20px; }
label { display: block; margin-bottom: 8px; font-weight: bold; color: var(--text-blue); }
input, textarea, select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 10px;
    background: linear-gradient(to bottom, #f9f9f9 0%, #ffffff 100%);
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.05);
    font-family: inherit;
    font-size: 1rem;
}
input:focus, textarea:focus { 
    outline: none; 
    border-color: #87CEEB; 
    box-shadow: 0 0 10px rgba(135, 206, 235, 0.5); 
}

/* --- FOOTER --- */
footer {
    background: linear-gradient(to bottom, #ffffff 0%, #e0f7fa 100%);
    padding: 40px 0;
    margin-top: auto;
    border-top: 1px solid white;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.tr-phone {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-blue);
    background: white;
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid #b0e0e6;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute; top: 60px; left: 0; width: 100%;
        background: rgba(255, 255, 255, 0.95);
        flex-direction: column; padding: 20px; text-align: center;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    .nav-links.active { display: flex; }
    .burger { display: block; }
    
    .grid-2 { grid-template-columns: 1fr; }
    h1 { font-size: 2.5rem; }
    .hero-img { margin-top: 30px; }
    
    .footer-content { flex-direction: column; text-align: center; }
    .tr-phone { justify-content: center; }
}