/* 
 * Mapen Mühendislik - Main Stylesheet
 * Modern, Professional, Engineering-focused Design
 */

:root {
    /* Color Palette */
    --primary-color: #0056b3;
    /* Engineering Blue */
    --secondary-color: #2c3e50;
    /* Dark Slate */
    --accent-color: #f39c12;
    /* Industrial Orange/Yellow for highlights */
    --text-color: #333333;
    --light-text: #666666;
    --background-light: #f8f9fa;
    --white: #ffffff;
    --border-color: #e9ecef;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-heading: 'Montserrat', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Transitions */
    --transition-fast: 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Utilities */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #004494;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 86, 179, 0.3);
}

.btn-outline {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.section-padding {
    padding: var(--spacing-lg) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title h2 {
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
}

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    font-family: var(--font-heading);
    letter-spacing: -1px;
}

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

.nav-links a {
    font-weight: 500;
    font-size: 1rem;
    color: var(--secondary-color);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

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

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

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

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-col h3 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.footer-col p,
.footer-col a {
    color: #bdc3c7;
    margin-bottom: 10px;
    display: block;
}

.footer-col a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #bdc3c7;
    font-size: 0.9rem;
}

/* Mobile Responsiveness */
@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-links {
        position: fixed;
        left: -100%;
        top: 80px;
        gap: 0;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 16px 0;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .hero h1 {
        font-size: 2rem !important;
    }

    .section-padding {
        padding: var(--spacing-md) 0;
    }
}