/* --- GENEL AYARLAR VE DEĞİŞKENLER --- */
:root {
    --primary-color: #0a192f; /* Koyu Lacivert */
    --secondary-color: #112240; /* Biraz daha açık lacivert */
    --accent-color: #64ffda; /* Turkuaz Vurgu Rengi */
    --text-color: #ccd6f6; /* Açık Metin Rengi */
    --text-color-dark: #8892b0; /* Koyu Metin Rengi */
    --light-bg: #f5f5f5;
    --font-family: 'Poppins', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 6rem 0;
}

h1, h2, h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 10px auto 0;
}

a {
    text-decoration: none;
    color: var(--accent-color);
    transition: color 0.3s ease;
}

a:hover {
    color: #fff;
}

p {
    margin-bottom: 1rem;
    color: var(--text-color-dark);
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

.btn-secondary {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--secondary-color);
    border: 1px solid var(--text-color-dark);
    color: var(--text-color);
    border-radius: 5px;
    font-size: 0.9rem;
}
.btn-secondary:hover {
    background-color: var(--primary-color);
    border-color: var(--accent-color);
}

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

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

#main-nav ul {
    display: flex;
    list-style: none;
}

#main-nav ul li {
    margin-left: 25px;
}

#main-nav ul li a {
    color: var(--text-color);
    font-weight: 400;
}
#main-nav ul li a:hover {
    color: var(--accent-color);
}

.lang-switcher a {
    margin-left: 10px;
    font-weight: 600;
    padding: 5px;
}

.lang-switcher a.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- HERO SECTION --- */
.hero-section {
    background: linear-gradient(rgba(10, 25, 47, 0.9), rgba(10, 25, 47, 0.9)), url('img/hero-bg.jpg') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: #fff;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* --- SERVICES --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.service-card {
    background-color: var(--secondary-color);
    padding: 2.5rem 2rem;
    border-radius: 5px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.service-card i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}
.service-card h3 {
    font-size: 1.5rem;
}

/* --- PROJECTS --- */
#projects {
    background-color: var(--secondary-color);
}
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.project-card {
    background-color: var(--primary-color);
    padding: 2rem;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.project-card h3 {
    color: var(--accent-color);
}
.project-card a {
    margin-top: 1rem;
    align-self: flex-start;
}

/* --- ABOUT --- */
.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
}

/* --- CONTACT --- */
#contact {
     background-color: var(--secondary-color);
}
.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: flex-start;
}
.contact-subtitle {
    text-align: center;
    max-width: 600px;
    margin: -2rem auto 3rem;
}

.contact-form form input,
.contact-form form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 1rem;
    background-color: var(--primary-color);
    border: 1px solid var(--text-color-dark);
    border-radius: 5px;
    color: var(--text-color);
    font-family: var(--font-family);
}

.contact-form form input:focus,
.contact-form form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.contact-info p {
    margin-bottom: 1.5rem;
    line-height: 1.4;
}
.contact-info p strong {
    color: var(--accent-color);
    display: block;
    margin-bottom: 5px;
}

/* --- FOOTER --- */
#footer {
    background-color: var(--primary-color);
    padding-top: 4rem;
}
.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    padding-bottom: 4rem;
}
.footer-logo {
    height: 40px;
    margin-bottom: 1rem;
}
.footer-links ul {
    list-style: none;
}
.footer-links ul li {
    margin-bottom: 0.5rem;
}
.footer-contact p {
    margin-bottom: 1rem;
}
.footer-contact i {
    color: var(--accent-color);
    margin-right: 10px;
}
.footer-bottom {
    border-top: 1px solid var(--secondary-color);
    text-align: center;
    padding: 1.5rem 0;
}
.footer-bottom p {
    font-size: 0.9rem;
    color: var(--text-color-dark);
}

/* --- MOBİL UYUMLULUK --- */
@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    #main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--secondary-color);
        flex-direction: column;
        text-align: center;
        padding: 1rem 0;
    }
    #main-nav.active {
        display: flex;
    }
    #main-nav ul {
        flex-direction: column;
    }
    #main-nav ul li {
        margin: 1rem 0;
    }
    .mobile-menu-toggle {
        display: block;
    }

    .services-grid, .projects-grid, .contact-grid, .footer-container {
        grid-template-columns: 1fr;
    }

    .header-container {
        padding: 0 15px;
    }
    .lang-switcher {
        display: none; /* Mobilde gizle, menüye eklenebilir isterseniz */
    }
}
	/* --- FORM BİLDİRİM MESAJLARI --- */
.form-messages {
    width: 100%;
    padding: 15px;
    margin-top: 1.5rem;
    border-radius: 5px;
    font-weight: 600;
    text-align: center;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.form-messages.success,
.form-messages.error {
    opacity: 1;
}

.form-messages.success {
    background-color: rgba(100, 255, 218, 0.1);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

.form-messages.error {
    background-color: rgba(255, 100, 100, 0.1);
    border: 1px solid #ff6464;
    color: #ff8a8a;
}

/* Gönderme sırasında dönen ikon için */
.fa-spinner {
    animation: fa-spin 1s infinite linear;
}

@keyframes fa-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}