:root {
    --bg-dark: #0B0F19; /* Çok koyu lacivert/siyah */
    --text-white: #F8FAFC;
    --text-grey: #94A3B8;
    --accent-shift: #6f42c1; /* NovaShift Moru */
    --accent-stat: #3B82F6; /* NovaStat Mavisi */
    --accent-stock: #10B981; /* NovaStock Yeşili */
}

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: 'Inter', sans-serif;
    margin: 0; padding: 0;
    overflow-x: hidden;
}

h1, h2, h3 { font-family: 'Space Grotesk', sans-serif; }

/* NAVBAR */
.main-nav {
    padding: 1.5rem 2rem;
    display: flex; justify-content: space-between; align-items: center;
    max-width: 1200px; margin: 0 auto;
    position: absolute; top: 0; left: 0; right: 0; z-index: 100;
}
.nav-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-white);
    text-decoration: none;
}
.nav-logo span {
    font-weight: 300;
    opacity: 0.7;
}

.nav-links {
    display: flex; gap: 2rem; list-style: none; margin: 0; padding: 0;
}
.nav-links a {
    color: var(--text-grey); text-decoration: none; font-size: 0.95rem; transition: color 0.3s;
}
.nav-links a:hover { color: #fff; }

.btn-contact {
    padding: 0.6rem 1.5rem;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    color: #fff; text-decoration: none; font-size: 0.9rem;
    transition: all 0.3s;
}
.btn-contact:hover {
    background: #fff; color: var(--bg-dark); border-color: #fff;
}


/* HERO ALANI */
header {
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: var(--bg-dark);
    background-image: radial-gradient(circle at 50% 50%, rgba(111, 66, 193, 0.15) 0%, transparent 60%);

    position: relative;
    padding-top: 80px; /* Navbardan dolayı içeriği aşağı it */
}

/* Arka plan ızgarası (Teknolojik his) */
header::before {
    content: '';
    position: absolute;
    width: 100%; height: 100%;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    transition: background-position 0.1s linear; /* JS ile kontrol için eklendi */
}

.brand-name {
    font-size: 1.2rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-grey);
    margin-bottom: 1rem;
}

h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin: 0;
    background: linear-gradient(to right, #fff, #94A3B8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: 1.2rem;
    color: var(--text-grey);
    max-width: 600px;
    margin: 2rem auto;
    line-height: 1.6;
}

/* EKOSİSTEM (ÜRÜNLER) */
.ecosystem {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 3rem;
    border-left: 4px solid var(--accent-shift);
    padding-left: 1rem;
}

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

.product-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2.5rem;
    border-radius: 20px;
    transition: transform 0.3s, border-color 0.3s;
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Ürün Renkleri */
.card-shift:hover { border-color: var(--accent-shift); box-shadow: 0 0 30px rgba(111, 66, 193, 0.2); }
.card-stat:hover { border-color: var(--accent-stat); }
.card-stock:hover { border-color: var(--accent-stock); }

.icon-box {
    width: 60px; height: 60px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.card-shift .icon-box { background: rgba(111, 66, 193, 0.2); color: var(--accent-shift); }
.card-stat .icon-box { background: rgba(59, 130, 246, 0.2); color: var(--accent-stat); }
.card-stock .icon-box { background: rgba(16, 185, 129, 0.2); color: var(--accent-stock); }

.product-card h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.product-card p { color: var(--text-grey); font-size: 0.95rem; line-height: 1.5; margin-bottom: 2rem; }

.btn-link {
    color: #fff; text-decoration: none; font-weight: 600;
    display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-link:hover { text-decoration: underline; }

/* Coming Soon Badge */
.badge-soon {
    position: absolute; top: 20px; right: 20px;
    background: rgba(255, 255, 255, 0.1);
    padding: 5px 12px; border-radius: 20px;
    font-size: 0.8rem; color: var(--text-grey);
}

/* TEKNOLOJİ ALANI */
.tech-section {
    text-align: center;
    padding: 8rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.tech-grid {
    display: flex; justify-content: center; gap: 4rem; margin-top: 4rem;
}
.tech-item h4 { font-size: 3rem; margin: 0; color: var(--text-white); }
.tech-item span { color: var(--text-grey); }

/* FOOTER */
footer {
    text-align: center; padding: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-grey);
    font-size: 0.9rem;
}

/* JS ANIMASYONLARI */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* MANIFESTO */
.manifesto {
    text-align: center; padding: 4rem 2rem;
    background: linear-gradient(180deg, rgba(111,66,193,0.05) 0%, transparent 100%);
}
.manifesto p {
    font-size: 1.5rem; color: #fff; line-height: 1.6; max-width: 900px; margin: 0 auto;
}
.manifesto strong { color: var(--accent-shift); }

/* TECH STACK */
.tech-stack {
    padding: 3rem 0;
    background: rgba(255,255,255,0.02);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    text-align: center;
}
.stack-title {
    font-size: 0.8rem; letter-spacing: 2px; color: var(--text-grey); margin-bottom: 2rem;
}
.stack-grid {
    display: flex; justify-content: center; gap: 3rem; flex-wrap: wrap;
}
.stack-item {
    font-size: 1.2rem; color: #fff; opacity: 0.6; display: flex; align-items: center; gap: 10px;
    transition: opacity 0.3s, color 0.3s;
}
.stack-item:hover { opacity: 1; color: var(--accent-shift); }

/* ROADMAP */
.roadmap-section { padding: 5rem 2rem; max-width: 800px; margin: 0 auto; }
.timeline {
    border-left: 2px solid rgba(255,255,255,0.1);
    padding-left: 2rem;
    position: relative;
}
.timeline-item { margin-bottom: 3rem; position: relative; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item::before {
    content: ''; position: absolute; left: -2.6rem; top: 5px;
    width: 15px; height: 15px; background: var(--bg-dark);
    border: 2px solid var(--text-grey); border-radius: 50%;
    transition: border-color 0.3s;
}
.timeline-item:hover::before {
    border-color: var(--accent-shift);
}
.year { font-size: 0.9rem; color: var(--accent-shift); font-weight: bold; margin-bottom: 0.5rem; }
.milestone { font-size: 1.5rem; font-weight: 600; color: #fff; margin-bottom: 0.5rem; }
.timeline-item p { color: var(--text-grey); margin: 0; }

.milestone.active {
    color: var(--accent-shift);
}
.timeline-item:has(.active)::before {
    background: var(--accent-shift);
    border-color: var(--accent-shift);
}

/* CONTACT SECTION */
.contact-section {
    padding: 6rem 2rem;
    background: linear-gradient(to right, #0B0F19 50%, #0F1522 50%); /* İki renkli zemin */
}

.contact-container {
    max-width: 1000px; margin: 0 auto;
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem;
    align-items: start;
}

/* Sol Taraf */
.contact-info p { color: var(--text-grey); line-height: 1.6; margin-bottom: 3rem; }
.info-item {
    display: flex; gap: 1.5rem; margin-bottom: 2rem; align-items: center;
}
.info-item i {
    width: 50px; height: 50px; background: rgba(255,255,255,0.05);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    color: var(--accent-shift); font-size: 1.2rem;
}
.info-item span { display: block; font-size: 0.8rem; color: var(--text-grey); margin-bottom: 3px; }
.info-item a, .info-item p { color: #fff; text-decoration: none; font-weight: 500; margin: 0; }

/* Sağ Taraf (Form) */
.contact-form {
    background: rgba(255,255,255,0.03);
    padding: 3rem; border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
}
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; color: var(--text-grey); font-size: 0.85rem; margin-bottom: 0.5rem; }

.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 1rem; border-radius: 8px;
    color: #fff; font-family: 'Inter', sans-serif;
    outline: none; transition: border-color 0.3s;
    box-sizing: border-box; /* padding'in genişliği etkilememesi için */
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
    border-color: var(--accent-shift);
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: var(--accent-shift);
    color: #fff; border: none; border-radius: 8px;
    font-weight: 600; cursor: pointer;
    transition: transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn-submit:hover { transform: translateY(-2px); }


@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .product-grid { grid-template-columns: 1fr; }
    .tech-grid { flex-direction: column; gap: 2rem; }

    /* Mobilde Menüyü Gizle (Basit Çözüm) */
    .nav-links { display: none; } /* Mobilde hamburger menü gerekir ama şimdilik gizleyelim */

    /* Mobil İletişim Formu */
    .contact-section { background: #0B0F19; } /* Mobilde düz renk */
    .contact-container { grid-template-columns: 1fr; gap: 3rem; }
    .contact-form { padding: 1.5rem; }
}