/* ============================================================
   QUIZ CENTER — Category tabs, 3D hover directory cards
   ============================================================ */
.up-quiz-center-page { direction: rtl; }

.up-quiz-center-hero {
    background: linear-gradient(135deg, #005BAC, #00A651);
    color: #fff;
    text-align: center;
    padding: 50px 20px;
    border-radius: 0 0 24px 24px;
}
.up-quiz-center-hero h1 { font-size: 30px; margin: 10px 0 8px; }
.up-quiz-center-hero p { font-size: 14px; opacity: 0.9; }

/* --- CATEGORY TABS --- */
.up-quiz-category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    max-width: 900px;
    margin: 30px auto;
    padding: 0 20px;
}
.up-quiz-tab {
    padding: 10px 22px;
    border-radius: 24px;
    border: 2px solid #005BAC;
    background: #fff;
    color: #005BAC;
    font-size: 14px;
    cursor: pointer;
    transition: all 250ms ease;
}
.up-quiz-tab:hover {
    background: #EAF1FB;
    transform: translateY(-2px);
}
.up-quiz-tab.active {
    background: linear-gradient(135deg, #005BAC, #003D75);
    color: #fff;
    box-shadow: 0 6px 16px rgba(0, 91, 172, 0.3);
}

/* --- GRID --- */
.up-quiz-directory-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
    min-height: 200px;
    transition: opacity 200ms ease;
}
.up-quiz-directory-grid.up-quiz-loading {
    opacity: 0.4;
}

/* --- 3D HOVER CARD --- */
.up-quiz-directory-card {
    display: block;
    text-decoration: none;
    background: linear-gradient(135deg, #FFFFFF, #F8FAFC);
    border: 1.5px solid #E2E8F0;
    border-radius: 18px;
    padding: 26px;
    width: 280px;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform 350ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 350ms ease;
    box-shadow: 0 4px 12px rgba(0, 91, 172, 0.08);
}
.up-quiz-directory-card::before {
    content: "";
    position: absolute;
    top: 0; right: 0; left: 0;
    height: 4px;
    background: linear-gradient(90deg, #005BAC, #00A651, #F9A825);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 350ms ease;
}
.up-quiz-directory-card:hover {
    transform: perspective(1000px) rotateX(3deg) rotateY(-3deg) translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 91, 172, 0.18), 0 8px 16px rgba(0, 0, 0, 0.08);
}
.up-quiz-directory-card:hover::before {
    transform: scaleX(1);
}

.up-quiz-card-icon {
    font-size: 32px;
    margin-bottom: 10px;
}
.up-quiz-directory-card h3 {
    font-size: 17px;
    color: #0F172A;
    margin: 0 0 6px;
    line-height: 1.5;
}
.up-quiz-card-type {
    display: inline-block;
    font-size: 11.5px;
    color: #64748B;
    margin-bottom: 12px;
}
.up-quiz-card-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.up-quiz-badge {
    background: #EAF1FB;
    color: #005BAC;
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 12px;
}
.up-quiz-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid #E2E8F0;
    font-size: 13px;
    color: #334155;
}
.up-quiz-card-cta {
    color: #00A651;
    font-weight: 600;
}

@media (max-width: 600px) {
    .up-quiz-directory-card { width: 100%; }
    .up-quiz-center-hero h1 { font-size: 24px; }
}

/* Quiz Center's own page hero — was missing entirely, now matches
   Teacher Corner's hero exactly (same blue-green gradient formula)
   for a unified design system across both dashboards. */
.up-quiz-center-hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    border-radius: 0 0 24px 24px;
}
.up-quiz-center-hero h1 {
    color: #fff;
}
.up-quiz-center-hero p {
    color: #fff;
    opacity: 0.95;
}