/* --- SWISS STYLE VARIABLES --- */
:root {
    --bg-color: #ffffff;
    --text-primary: #000000;
    --text-secondary: #333333;
    --accent-color: #ff3300; /* Klasik Swiss kırmızısı */
    --grid-gap: 20px;
    --max-width: 1200px;
    --font-stack: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-stack);
    line-height: 1.4;
    font-size: 16px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; transition: color 0.2s; }
ul { list-style: none; }
img { width: 100%; height: auto; display: block; filter: grayscale(100%); transition: filter 0.3s; }
img:hover { filter: grayscale(0%); }

/* --- TYPOGRAPHY --- */
h1, h2, h3 { font-weight: 700; text-transform: uppercase; letter-spacing: -0.5px; }
h1 { font-size: 4rem; line-height: 0.9; margin-bottom: 20px; }
h2 { font-size: 2.5rem; margin-bottom: 30px; border-top: 4px solid var(--text-primary); padding-top: 10px; display: inline-block; }
p { margin-bottom: 1.5rem; font-weight: 400; max-width: 60ch; }

/* --- HEADER --- */
header {
    border-bottom: 2px solid var(--text-primary);
    padding: 20px 0;
    position: sticky;
    top: 0;
    background: var(--bg-color);
    z-index: 1000;
}

.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: 1.5rem;
    font-weight: 900;
    letter-spacing: -1px;
}

.nav-links { display: flex; gap: 40px; }
.nav-links a { font-weight: 700; font-size: 0.9rem; text-transform: uppercase; }
.nav-links a:hover, .nav-links a.active { color: var(--accent-color); text-decoration: underline; }

/* Mobile Menu */
.burger { display: none; cursor: pointer; }
.burger div { width: 30px; height: 3px; background-color: var(--text-primary); margin: 5px 0; }

/* --- LAYOUT GRID --- */
.container {
    max-width: var(--max-width);
    margin: 60px auto;
    padding: 0 20px;
    flex: 1;
}

.grid-asym {
    display: grid;
    grid-template-columns: 2fr 1fr; /* Asimetrik Grid */
    gap: 40px;
    align-items: start;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    border-top: 1px solid var(--text-primary);
    padding-top: 40px;
}

/* --- COMPONENTS --- */
.swiss-card {
    padding: 20px 0;
}
.swiss-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.swiss-card .icon-box svg { width: 40px; height: 40px; margin-bottom: 20px; }

.btn {
    display: inline-block;
    padding: 15px 30px;
    background-color: var(--text-primary);
    color: var(--bg-color);
    font-weight: 700;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    margin-top: 20px;
}
.btn:hover { background-color: var(--accent-color); }

/* --- FORMS --- */
.form-group { margin-bottom: 20px; }
label { display: block; margin-bottom: 5px; font-weight: 700; text-transform: uppercase; font-size: 0.8rem; }
input, textarea, select {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--text-primary);
    font-family: var(--font-stack);
    font-size: 1rem;
    border-radius: 0;
    background: transparent;
}
input:focus, textarea:focus { outline: none; border-color: var(--accent-color); }

/* --- FOOTER --- */
footer {
    background-color: var(--text-primary);
    color: var(--bg-color);
    padding: 60px 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.footer-col h4 { color: var(--accent-color); margin-bottom: 20px; font-size: 1rem; }
.footer-col a:hover { color: var(--accent-color); }
.tr-phone { font-weight: 700; font-size: 1.2rem; display: flex; align-items: center; gap: 10px; }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .grid-asym { grid-template-columns: 1fr; }
    
    .nav-links {
        display: none;
        position: absolute; top: 70px; left: 0; width: 100%;
        background-color: var(--bg-color);
        flex-direction: column; padding: 20px;
        border-bottom: 2px solid var(--text-primary);
    }
    .nav-links.active { display: flex; }
    .burger { display: block; }
    
    .footer-content { flex-direction: column; }
}