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

body {
    font-family: 'Poppins', sans-serif;
    background-color: #000000;
}

/* ===== Globalna siatka bezpieczeństwa dla mobilek =====
   Na telefonie żadna ozdobna poświata / sub-pikselowy element nie może
   wywołać poziomego przewijania. `clip` (a nie `hidden`) nie psuje
   position: sticky / fixed. Duże realne przepełnienia są naprawione u źródła. */
@media (max-width: 1024px) {
    html, body { overflow-x: clip; max-width: 100%; }
}
/* ================= KNOWLEDGE HUB SECTION ================= */
.knowledge-hub {
    position: relative;
    padding: 6vw 0;
    background: #080000; /* Bardzo ciemne tło */
    overflow: hidden;
}

/* Subtelny gradient w tle */
.knowledge-hub::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255, 0, 0, 0.03) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.hub-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Header sekcji */
.hub-header {
    text-align: center;
    margin-bottom: 4vw;
}

.hub-badge {
    display: inline-block;
    padding: 0.5vw 1vw;
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.2);
    border-radius: 20px;
    color: #ff4d4d;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.hub-title {
    font-size: 2.5rem;
    color: white;
    font-weight: 700;
    margin: 0 0 1rem 0;
}

.hub-desc {
    color: #888;
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Grid kart */
.hub-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2vw;
}

/* Styl kart */
.hub-card {
    position: relative;
    background: #110505;
    border: 1px solid #2a0a0a;
    border-radius: 16px;
    padding: 3vw;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    group: pointer;
}

/* Efekt glow w tle karty */
.hub-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(255, 0, 0, 0.1), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.hub-card:hover .hub-card-bg {
    opacity: 1;
}

.hub-card:hover {
    transform: translateY(-5px);
    border-color: #ff0000;
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.15);
}

/* Ikona */
.card-icon-box {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #220000, #3d0000);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    color: #ff3333;
    border: 1px solid #550000;
    transition: transform 0.4s ease;
}

.hub-card:hover .card-icon-box {
    transform: scale(1.1) rotate(5deg);
    background: #ff0000;
    color: white;
    border-color: #ff0000;
}

/* Treść karty */
.card-content h3 {
    color: white;
    font-size: 1.5rem;
    margin: 0 0 0.8rem 0;
    font-weight: 600;
}

.card-content p {
    color: #999;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0 0 2rem 0;
}

/* Link na dole karty */
.card-link {
    font-weight: 600;
    color: #ff3333;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
}

.hub-card:hover .card-link {
    color: #ff6666;
    gap: 1rem;
}

/* Responsywność */
@media (max-width: 768px) {
    .hub-grid {
        grid-template-columns: 1fr;
    }
    .hub-title {
        font-size: 1.8rem;
    }
}
/* (Sekcja „Program Partnerski / Twój Hype to Waluta" została usunięta z indexu.) */