html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}


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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins',sans-serif;
    background: #f5f7fb;
    color: #1e293b;
    overflow-x: hidden;
}

/* HEADER */

header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
}

.navbar {
    max-width: 1200px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: #0f172a;
}

.menu {
    display: flex;
    gap: 30px;
}

    .menu a {
        text-decoration: none;
        color: #334155;
        font-weight: 500;
        transition: .3s;
    }

        .menu a:hover {
            color: #2563eb;
        }

/* HERO */

.hero {
    min-height: 100vh;
    background: linear-gradient(rgba(15,23,42,.65),rgba(15,23,42,.75)), url('https://ucbesyirmibes.com/Resimler/14-02-2022.jpeg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 80px;
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    text-align: center;
    color: white;
}

.hero-subtitle {
    text-transform: uppercase;
    letter-spacing: 4px;
    color: #cbd5e1;
    margin-bottom: 20px;
    font-size: 14px;
}

.hero h1 {
    font-size: 72px;
    line-height: 1.1;
    margin-bottom: 25px;
}

.hero-text {
    max-width: 750px;
    margin: auto;
    font-size: 18px;
    line-height: 1.8;
    color: #e2e8f0;
}

/* COUNTER */

.counter-wrapper {
    margin-top: 60px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 30px;
    padding: 45px 30px;
    backdrop-filter: blur(12px);
}

.counter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
}

.counter-box {
    width: 200px;
    padding: 25px;
    border-radius: 22px;
    background: rgba(255,255,255,.07);
}

.counter-number {
    font-size: 58px;
    font-weight: 700;
    color: #60a5fa;
    margin-bottom: 10px;
}

.counter-label {
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #cbd5e1;
    font-size: 14px;
}

.start-date {
    margin-top: 35px;
    color: #e2e8f0;
    font-size: 16px;
}

/* BLOG */

.blog {
    padding: 120px 20px;
}

.container {
    max-width: 1200px;
    margin: auto;
}

.section-title {
    text-align: center;
    font-size: 48px;
    margin-bottom: 70px;
    color: #0f172a;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(320px,1fr));
    gap: 35px;
}

.blog-card {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 35px rgba(15,23,42,.08);
    transition: .4s;
}

    .blog-card:hover {
        transform: translateY(-8px);
    }

.blog-image {
    width: 100%;
    height: 260px;
    object-fit: cover;
    display: block;
}

/*
            KENDİ RESİMLERİNİ BURAYA EKLE
            src kısmını değiştirmen yeterli
        */

.blog-content {
    padding: 30px;
}

.blog-date {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 12px;
}

.blog-title {
    font-size: 28px;
    margin-bottom: 15px;
    color: #0f172a;
}

.blog-text {
    color: #475569;
    line-height: 1.8;
    font-size: 15px;
}

/* QUOTE */

.quote-section {
    padding: 120px 20px;
    background: #0f172a;
    color: white;
    text-align: center;
}

.quote {
    max-width: 900px;
    margin: auto;
    font-size: 42px;
    line-height: 1.6;
    font-weight: 600;
}

.quote-author {
    margin-top: 30px;
    color: #94a3b8;
    letter-spacing: 3px;
    text-transform: uppercase;
}

/* FOOTER */

footer {
    background: #020617;
    color: #94a3b8;
    padding: 60px 20px;
}

.footer-container {
    max-width: 1200px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-title {
    font-size: 30px;
    color: white;
    margin-bottom: 15px;
}

.footer-text {
    line-height: 1.8;
    max-width: 500px;
}

.footer-menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

    .footer-menu a {
        color: #cbd5e1;
        text-decoration: none;
    }

.footer-bottom {
    margin-top: 50px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,.08);
    padding-top: 25px;
    color: #64748b;
}

/* MOBILE */

@media(max - width:768px) {

    .hero h1 {
        font-size: 46px;
    }

    .counter-box {
        width: 140px;
    }

    .counter-number {
        font-size: 38px;
    }

    .quote {
        font-size: 28px;
    }

    .section-title {
        font-size: 36px;
    }

    .navbar {
        flex-direction: column;
        gap: 15px;
    }
}

.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.55);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

.popup-card {
    width: 420px;
    max-width: 90%;
    background: #fff;
    border-radius: 20px;
    text-align: center;
    padding: 35px;
    animation: popup .6s ease;
    box-shadow: 0 20px 50px rgba(0,0,0,.35);
}

.popup-number {
    font-size: 70px;
    font-weight: bold;
    color: #ff2d75;
    margin-bottom: 10px;
}

.popup-card h2 {
    color: #ff2d75;
    margin-bottom: 20px;
}

.popup-card p {
    color: #555;
    line-height: 1.8;
}

.popup-card button {
    margin-top: 25px;
    border: none;
    padding: 12px 28px;
    border-radius: 30px;
    background: #ff2d75;
    color: white;
    cursor: pointer;
    font-size: 16px;
}

@keyframes popup {

    from {
        transform: scale(.3);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.confetti {
    position: fixed;
    width: 10px;
    height: 18px;
    top: -20px;
    z-index: 99998;
    animation: fall linear forwards;
}

@keyframes fall {

    to {
        transform: translateY(120vh) rotate(720deg);
        opacity: 0;
    }
}