/* Genel */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    background: #f4f6fb;
    color: #1f2933;
}

/* ÜST MENÜ */
.topbar {
    position: sticky;
    top: 0;
    z-index: 999;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 32px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}

.logo {
    font-weight: 800;
    font-size: 24px;
    color: #165dff;
}

.nav a {
    margin-left: 18px;
    text-decoration: none;
    color: #394b59;
    font-size: 14px;
    font-weight: 500;
}

.nav a:hover {
    color: #165dff;
}

.nav-cta {
    padding: 8px 16px;
    background: #165dff;
    color: #fff !important;
    border-radius: 999px;
}

/* HERO */
.hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 60px 10%;
    background: radial-gradient(circle at top left, #89b4ff 0, #165dff 40%, #0b2255 100%);
    color: #fff;
}

.hero-text {
    max-width: 500px;
}

.hero-text h1 {
    font-size: 40px;
    margin-bottom: 16px;
}

.hero-text p {
    font-size: 17px;
    line-height: 1.6;
    margin-bottom: 24px;
}

.hero-buttons .btn {
    margin-right: 12px;
}

.hero-badge {
    margin-top: 20px;
    font-size: 14px;
    opacity: 0.9;
}

.hero-phone img {
    width: 280px;
    border-radius: 32px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.35);
}

/* BUTONLAR */
.btn {
    display: inline-block;
    text-decoration: none;
    padding: 10px 22px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 14px;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn.primary {
    background: #fff;
    color: #165dff;
}

.btn.ghost {
    background: transparent;
    border-color: #ffffff88;
    color: #fff;
}

.btn.disabled {
    opacity: 0.6;
    cursor: default;
}

/* GENEL BÖLÜM STİLİ */
.section {
    padding: 60px 10%;
}

.section.light {
    background: #e8edf6;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

/* HAKKINDA KARTLARI */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.about-card {
    background: #fff;
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 8px 20px rgba(15,35,95,0.08);
}

/* ÖZELLİKLER */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.feature-card {
    background: #fff;
    border-radius: 18px;
    padding: 20px;
    text-align: left;
    box-shadow: 0 8px 20px rgba(15,35,95,0.08);
}

.feature-icon {
    font-size: 26px;
    display: inline-block;
    margin-bottom: 10px;
}

/* UYGULAMA GÖRÜNTÜLERİ */
.screens-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px; /* resimler arasında boşluk */
    width: 95%;
}

.screen-card {
    background: #fff;
    border-radius: 18px;
    padding: 14px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(15,35,95,0.06);
}

.screen-card img {
    width: 100%;
    border-radius: 16px;
    margin-bottom: 8px;
}

/* ADIM ADIM KISMI */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 20px;
}

.step {
    background: #fff;
    border-radius: 18px;
    padding: 18px;
    position: relative;
    box-shadow: 0 6px 16px rgba(15,35,95,0.06);
}

.step-number {
    position: absolute;
    top: -14px;
    left: 16px;
    background: #165dff;
    color: #fff;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 13px;
    font-weight: 700;
}

/* DOWNLOAD KARTI */
.download-card {
    max-width: 640px;
    margin: 0 auto;
    background: #fff;
    border-radius: 24px;
    padding: 32px;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

.download-buttons .btn {
    margin: 8px;
}

.contact-info {
    margin-top: 18px;
    font-size: 14px;
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 20px 10%;
    background: #0b1738;
    color: #d0d7ff;
    font-size: 13px;
}

.footer a {
    color: #ffffffb3;
    text-decoration: none;
}

.footer-links {
    margin-top: 4px;
}

/* MOBİL UYUMLULUK */
@media (max-width: 860px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }
    .hero-text {
        max-width: 100%;
        margin-bottom: 32px;
    }
    .hero-phone img {
        width: 220px;
    }
    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }
    .nav {
        margin-top: 8px;
    }
}