@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --font-outfit: 'Outfit', sans-serif;
    --brand-indigo: #4f46e5;
    --brand-bg: #f8fafc;
}

body {
    font-family: var(--font-outfit);
    background-color: var(--brand-bg);
    color: #1e293b;
    -webkit-font-smoothing: antialiased;
}

/* Kusursuz İnce Scrollbar */
.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 20px;
}
.custom-scrollbar:hover::-webkit-scrollbar-thumb {
    background-color: #94a3b8;
}

/* Navigasyon - Hover Efekti */
.nav-btn {
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    color: #64748b;
}
.nav-btn:hover {
    background-color: #f1f5f9;
    color: #0f172a;
    transform: translateX(6px);
}
.active-nav {
    background-color: #eef2ff !important;
    color: var(--brand-indigo) !important;
    font-weight: 700;
}
.active-nav span:first-child {
    opacity: 1 !important;
}

/* Yeni Nesil Derinlikli Kartlar (Ders İçeriği İçin) */
.lesson-card {
    background: #ffffff;
    border-radius: 28px;
    border: 1px solid #f1f5f9;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    padding: 2rem;
}

/* Taktik ve Uyarı Kutuları */
.taktik-box {
    border-radius: 24px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}
.taktik-box:hover {
    transform: translateY(-2px);
}
.taktik-box::after {
    content: "TİP";
    position: absolute;
    bottom: -15px;
    right: -10px;
    font-size: 6rem;
    font-weight: 900;
    opacity: 0.04;
    line-height: 1;
    pointer-events: none;
}

/* Pürüzsüz Sayfa Geçişi */
@keyframes slideUpFade {
    0% { opacity: 0; transform: translateY(15px); }
    100% { opacity: 1; transform: translateY(0); }
}
.animate-fade {
    animation: slideUpFade 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Hero Gradient */
.hero-gradient {
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    box-shadow: 0 20px 40px -15px rgba(99, 102, 241, 0.4);
}