/* --- CSS VARIABLES & RESET --- */
:root {
    /* Premium Dark Theme Palette */
    --bg-color: #0d0d0f; /* Çok koyu antrasit/siyah */
    --surface-color: #1a1a1c; /* Yüzey arka planı */
    --surface-light: #252528; /* Kartlar için hafif açık yüzey */
    
    --text-primary: #f5f5f5; /* Temiz beyaz */
    --text-secondary: #a3a3a3; /* Okunabilir gri */
    
    --accent-color: #D4AF37; /* Lüks Altın */
    --accent-hover: #F3E5AB; /* Açık Altın/Krem */
    
    /* Fonts */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing & Utilities */
    --container-max: 1200px;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
}

.text-accent {
    color: var(--accent-color);
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 8rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.section-subtitle {
    color: var(--accent-color);
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.text-center {
    text-align: center;
}

/* --- BUTTONS --- */
.btn-primary {
    display: inline-block;
    background-color: var(--accent-color);
    color: #000;
    padding: 1rem 2.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid var(--accent-color);
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent-color);
}

.btn-primary-outline {
    display: inline-block;
    background-color: transparent;
    color: var(--text-primary);
    padding: 0.8rem 2rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

.btn-primary-outline:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* --- NAVBAR --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    transition: var(--transition-smooth);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
    background: rgba(13, 13, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-accent {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a:not(.btn-primary-outline) {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
}

.nav-links a:not(.btn-primary-outline)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-color);
    transition: var(--transition-smooth);
}

.nav-links a:not(.btn-primary-outline):hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

/* --- HERO SECTION --- */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.hero-bg img.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transform: scale(1.05);
    transition: opacity 2s ease-in-out, transform 8s ease-out;
}

.hero-bg img.slide.active {
    opacity: 1;
    transform: scale(1);
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    opacity: 0.7;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-primary);
    border-radius: 15px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 15px); opacity: 0; }
}

/* --- ABOUT SECTION --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.stats-container {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

.about-image-wrapper {
    position: relative;
    border-radius: 2px;
}

.about-slider {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
    border-radius: 2px;
}

.about-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.about-img.active {
    opacity: 1;
    z-index: 1;
}

.slider-controls {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    z-index: 2;
    pointer-events: none;
}

.slider-btn {
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    backdrop-filter: blur(4px);
    transition: var(--transition-smooth);
    pointer-events: auto;
    font-size: 1.2rem;
}

.slider-btn:hover {
    background: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.dot.active {
    background-color: var(--accent-color);
    width: 24px;
    border-radius: 4px;
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background-color: var(--surface-color);
    padding: 2rem;
    border-left: 4px solid var(--accent-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.badge-number {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.badge-text {
    color: var(--accent-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* --- SERVICES SECTION --- */
.services {
    background-color: var(--surface-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.service-card {
    background-color: var(--bg-color);
    padding: 3rem 2rem;
    border: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(212, 175, 55, 0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.service-icon {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-desc {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.service-link {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.service-link span {
    transition: transform 0.3s;
}

.service-card:hover .service-link span {
    transform: translateX(5px);
    color: var(--accent-color);
}

/* --- PROJECTS SECTION --- */
.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.project-card {
    position: relative;
    border-radius: 2px;
    overflow: hidden;
    aspect-ratio: 4/3;
    display: block;
}

.project-img-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
}

.project-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.1) 50%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2.5rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-img-wrapper img {
    transform: scale(1.05);
}

.project-card:hover .project-overlay {
    opacity: 1;
    transform: translateY(0);
}

.project-category {
    color: var(--accent-color);
    font-size: 0.8rem;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.project-name {
    color: var(--text-primary);
    font-size: 1.8rem;
}

/* --- CTA SECTION --- */
.cta {
    background: linear-gradient(to right, rgba(26,26,28,0.9), rgba(26,26,28,0.9)), url('../img/hero.jpg') center/cover fixed;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.cta-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.cta-desc {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2.5rem auto;
}

/* --- FOOTER --- */
.footer {
    background-color: var(--bg-color);
    padding: 5rem 0 2rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-about {
    color: var(--text-secondary);
    margin-top: 1.5rem;
    font-size: 0.95rem;
    max-width: 300px;
}

.footer-title {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.footer-contact svg {
    color: var(--accent-color);
    flex-shrink: 0;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
}

.social-icon:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background-color: rgba(212, 175, 55, 0.05);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* --- ANIMATIONS & UTILS --- */
.fade-up {
    animation: fadeUp 1s ease forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Initial state for observer elements */
.fade-up-scroll, .fade-left-scroll {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up-scroll {
    transform: translateY(40px);
}

.fade-left-scroll {
    transform: translateX(40px);
}

.is-visible {
    opacity: 1;
    transform: translate(0);
}

/* --- RESPONSIVE DESIGN --- */
.hidden-mobile { display: inline-block; }
.visible-mobile { display: none; }

@media (max-width: 1024px) {
    .hero-title { font-size: 3.5rem; }
    .about-grid { gap: 2rem; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .section-padding { padding: 5rem 0; }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--bg-color);
        flex-direction: column;
        justify-content: center;
        transition: 0.5s ease;
        border-left: 1px solid rgba(255,255,255,0.05);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
        z-index: 1001;
    }
    
    .hero-title { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1rem; }
    
    .about-grid { grid-template-columns: 1fr; }
    .about-image-wrapper { margin-top: 2rem; }
    .about-img { height: 400px; }
    
    .services-grid { grid-template-columns: 1fr; }
    
    .projects-grid { grid-template-columns: 1fr; }
    .hidden-mobile { display: none; }
    .visible-mobile { display: block; }
    
    .cta-title { font-size: 2.5rem; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}