/* 
 * ITAL Kursos - Modern Design System Overrides
 * Focado em Premium UX, Usabilidade e Acessibilidade.
 */

:root {
    --ital-blue: #004A8D;
    --ital-blue-hover: #003a70;
    --success-green: #2ECC71;
    --warning-amber: #F39C12;
    --danger-red: #E74C3C;
    --bg-light: #F8FAFC;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
}

/* Lucide Icon Standard Sizes */
.icon-xxs { width: 12px; height: 12px; }
.icon-xs { width: 16px; height: 16px; }
.icon-sm { width: 20px; height: 20px; }
.icon-md { width: 24px; height: 24px; }
.icon-lg { width: 32px; height: 32px; }

/* Premium Card Hover Effects */
.card-premium {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(0,0,0,0.05);
}
.card-premium:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1) !important;
}

/* Discussion / Knowledge Base Styles */
.duvida-card {
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    background: #fff;
    border: 1px solid #e2e8f0 !important;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.duvida-card:hover { border-color: var(--ital-blue) !important; }
.duvida-card.minha-duvida {
    background-color: #f0f7ff !important;
    border-left: 4px solid var(--ital-blue) !important;
}

/* User Sigils (Initials) */
.user-sigil {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.75rem;
    background: #e2e8f0;
    color: #475569;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
    flex-shrink: 0;
}
.user-sigil.primary { background-color: var(--ital-blue); color: #fff; }
.user-sigil.success { background-color: var(--success-green); color: #fff; }
.user-sigil.warning { background-color: var(--warning-amber); color: #fff; }

/* Layout Refinements */
.player-sidebar {
    position: sticky;
    top: 80px;
}

@media (max-width: 991.98px) {
    .player-sidebar {
        position: static;
        margin-top: 1.5rem;
    }
}